Answer:\(-3r+7\)
Step-by-step explanation:
given the equation
\((-8r-2)-(-5r-9)\)
Distribute the negative
\(-8r-2+5r+9\)
Combine like terms
\((-8r+5r)+(-2+9)\)
\((-3r)+(7)=\)
\(-3r+7\)
Hope this helps!
Please help! I don’t get this
Answer:
5.5?
Step-by-step explanation:
Honestly, I think it's just because the 4 pack of the 5.5 will equal more than the others tbh. Might be wrong, But I believe it's 5.5.
Ethan sold 2/3 gallon of lemonade. Kayla sold some lemonade too. Together, they sold 1 1/4 gallons. how much did Kayla make
Answer:
7/12
Step-by-step explanation:
A tourist spends $ 21.05 each on 4 tickets for a group to go to the top of the Empire State Building. Which equation best represents the effect on the tourist's bank account?
Answer:
X - 84.2
Step-by-step explanation:
Given that:
Amount spent per ticket = $21.05
Number of tickets = 4
The effect of the spending on the tourist bank account :
Let initial amount in his account = x
Change or effect on bank account after spending on 4 tickets :
X - (cost per ticket * number of tickets)
X - (21.05 * 4)
X - 84.2
Answer:
1212
Step-by-step explanation:
9790
I need this asap graph −1/2x+1/8y=3/4.
Graph the line using the slope and y-intercept, or two points.
Slope:
4
y-intercept:
(0, 6)
Which of the following r-values represents the strongest correlation?
A. 0.55
B. 0.65
C. 0.35
D. 0.45
Answer:
0.65
Step-by-step explanation:
The r-value option (B) 0.65 represents the strongest correlation.
What is the correlation coefficient?The correlation coefficient is a quantitative method of calculating correlation. It is a statistical concept, which helps in establishing a relation between predicted and actual values obtained in a statistical experiment.
For the given situation,
We need to determine the r-value that represents the strongest correlation.
The relationship between two variables is generally considered strong when their r value is larger than 0.7.
Among the options, 0.65 is near to 0.7, so it has strongest correlation.
Hence we can conclude that the r-value option (B) 0.65 represents the strongest correlation.
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Find the perimeter to this irregular shape.
Answer:23 mm
Step-by-step explanation:
add both 15 and 8 because they are as long as the one on the bottom
Answer:
70
Step-by-step explanation:
find the small unknown side by subtracting the two sides across from it. 12-7=5. add the 15 and 8 for the big unknown side. 15+8=23. add all the sides. 12+15+7+8+5+23=70
Use your measuring devices and right angle trigonometry to calculate the length of the hypotenuse of this triangle.
Note: you will need to use some creativity to find an angle inside the triangle.
Using trigonometric functions, we can find the value of hypotenuse to be 5.88m.
Define trigonometric functions?The six basic trigonometric operations take the angle of the right triangle as their domain input value and produce a range of numbers as their output.
The range of the trigonometric function, commonly referred to as the "trig function," of f(x) = sinθ is [-1, 1], and its domain is the angle, expressed in degrees or radians. The other functions have a similar domain and scope. Algebra, geometry, and calculus all make extensive use of trigonometric functions.
Here in the figure,
The angle given is 31°.
Now the opposite angle inside the triangle will be 31° due to the congruent angle theorem.
Now Sin 31° = 3/Hypotenuse
⇒ Hypotenuse = 3/Sin31°
⇒ H = 3/0.51
⇒ H = 5.88
Therefore, length of the hypotenuse = 5.88m
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The speed v of a train is 68 km/h, correct to the nearest km/h. Write down an inequality to show the error interval for v. Help pls
If the speed "v" of train is 68 km/h, then the inequality that shows the error interval is 67.5 ≤ v < 68.5.
The speed of train being reported as 68 km/h, correct to the nearest km/h, the possible error interval for the true speed of the train can be expressed as : 67.5 ≤ v < 68.5,
The lower bound of interval, 67.5 km/h, is obtained by rounding down the true speed of the train to the nearest km/h.
The upper bound of interval, 68.5 km/h, is obtained by rounding up the true speed of the train to the nearest km/h.
Therefore, the error interval inequality is 67.5 ≤ v < 68.5.
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Find the value of X.
Answer:
you have given wrong answer bro\sis correct it
Will give brainliest!!
According to a survey, approximately 93% of people have eaten pizza in the last month. If there are 958 students at Hillside High School, how many of them would you predict to have eaten pizza in the last month?
Answer:
891
Step-by-step explanation:
Since 93% of people have eaten pizza, and there are 958 students, we can take 93% of 958, which equals 890.94. Since we are just predicting, we round this up to 891, which is our answer.
Thank you, I hope you learned from this answer! If it did help, please mark this as brainliest! Thank you!
26. Using only digits 0, 1 and 2, this cube has a different
number on each face.
Numbers on each pair of opposite faces add to the
same 3-digit total.
What is the largest that this total could be?
Answer:
Step-by-step explanation:
Possible largest numbers using digit 0 , 1 , 2
222
221
220
212
211
210
222 + 210 = 221 + 211 = 220 + 212 = 432
Largest total can be 432
40-gal tank $170
Aquarium light $30
Filtration system $65
Thermometer $2
18-lb bag of gravel $13
Large rocks $3 per lb
Clown fish $20 each
Damselfish $7 each
Kevin bought 4 bags of gravel to cover the bottom of his fish tank. He has 5 pounds of gravel left over.
How much gravel did Kevin use to cover the bottom of the tank?
Kevin used _____pounds of gravel.
help I'm gonna give brainliesssstttt
Answer:
Kevin used 67 pounds of gravel.
Step-by-step explanation:
18pounds= 1 bag
4bags=?
18 x 4= 72
4 bags= 72 pounds
He has 5 pounds of gravel left over.
72 - 05= 67
Kevin used 67 pounds of gravel.
*EXTRA~(pounds can also be wrote as the letters lbs)
(so lbs means the same thing as pounds)
(lbs and pounds are both pronounced and said as the word "pounds")~EXTRA*
Someone help plz make sure it’s right and please no websites plz
A triangle has two side lengths: 18 in and 12 in. Which of the following could be the length of the third side?
Answer:
6<L<30
Step-by-step explanation:
because we know that the third side needs to be in between the sum of the other two it has to be less than 30 and then because it needs to apply to the other sides it is greater then 18-12 or 6.
The area of the poster is (x^2+2x-15) inches the width is (x-3) inches calculate the dimensions of the poster board when x=14
Answer:
The poster is 11 inches wide and 19 inches in height.
Step-by-step explanation:
We take the given equation: (x^2+2x-15) and we add in 14 as our x variable:
((14)^2+2(14)-15) the answer we get from that is 209. The area of the poster is 209 square inches. Then we find the width by taking (x-3) in this case x is 14 so the width of the poster is 11. In order to find the height we divide the height by the width and we get 19.
Therefore:
Height= 19 Inches
Width= 11 Inches
Total Area= 209 Square Inches
evaluate x+16, when x=8
Answer:
24
Step-by-step explanation:
x + 16
8 + 16
= 24
You just plug in 8 in the x place. Hope this helps, thank you !!
1. Differentiate the function f(x) = ln (81 sin^2 (x)) f’(x) 2. Differentiate the function P(t) = in ( √t2 + 9) p' (t) 3. if x2 + y2 + z2 = 9, dx/dt = B, and dy/dt = 4, find dz/dt when (x,y,z) = (2,2,1)
dz/dt =
First you will get 4dz
can someone finish the whole thing full points
Answer:
35
Step-by-step explanation:
General point slope equation:
y - y1 = m(x - x1)points are: (5, 35) and (-6, -31)
35-(-31)=m(5-(-6))66=m*11 ⇒ m=6The equation is now:
y-y1=6(x-x1)Using the first point:
y-35=6(x-5)? replaced by 35
A student's four test grades are stored in cells a10, b10, c10, and d10. which excel statement will calculate the test average of these 4 grades?
The excel statement to estimate the test average of these 4 grades is -
Click a cell just below column or on the right of the row containing the numbers you want to average.Click the arrow next to AutoSum > Average on the HOME tab, then press Enter.What is termed as average function?An average is the sum of many numbers divided by the total of numbers. It is also known as the arithmetic mean.
Assume we have the following sequence of numbers: 1, 2, 3, 4, 1, 2, and 3. The sum of the these numbers is 16, and the number of numbers divided by 7 is 2.28. As a result, the average of the these numbers is 2.28.In Microsoft Excel, how do you find the average?The average of multiple cells in Microsoft Excel and other spreadsheets can be calculated using the appropriate formula. The formula in the following example calculates the average of the values found in cells A1 through F1 of the first column : =AVERAGE(A1:F1)You would use the same row but modify the cells to cells in a row to calculate the average of cells in one row. For instance, the formula recognizes the average value in cells A1 via A20 when placed in cell A21. =AVERAGE(A1:A20)To know more about the Microsoft Excel, here
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what verbal (written) scale from inches to feet would represent a map whose representative fraction (rf) scale is 1:48,000? (1 foot
If the representative fraction scale is 1:48000, then the verbal scale from inches to feet is 1 inch represents 0.00025 feet.
We have to find the verbal (written) scale from inches to feet that represents a map with a representative-fraction (RF) scale of 1:48,000,
We use the formula:
⇒ Verbal scale = RF × Inches per foot,
We know that the RF scale is 1:48,000, which means that one unit on the map represents 48,000 units in the real world.
There are 12 inches in a foot,
So, we can convert the verbal scale to inches-per-foot by dividing by 12:
⇒ Inches per foot = (Verbal scale)/(12),
⇒ Inches per foot = (1/48000) × (12/1) = 0.00025
Therefore, the verbal scale from inches to feet is : 1 inch represents 0.00025 feet.
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The grass in Jamie's yard grew 161616 centimeters in 101010 days. It was growing at a constant rate.
How many days did it take the grass to grow 111 centimeter?
days
How many centimeters did the grass grow in 111 day?
centimeters
Days it took the grass to grow 1 centimeter and centimeters the grass grew in 1 day
0.625 days to grow 1 cm.
16/10 = 1.6 cm in 1 day.
How many centimeters did the grass grow in 111 days?According to the law of proportion, any two ratios or fractions must be equal.
In only a week and a half, the grass in Jamie's backyard grew by 16 cm. it is expanding at an unchanging pace.
We need to determine how many days have passed since the grass has grown one centimeter.
Let's say that x represents the number of days that the grass grew one centimeter.
Given the following definition of proportion:
16/10=1/x
16x = 10
x = 0.625 days
As a result, one centimeter of grass growth occurred after 0.625 days had passed.
b)
Change x into 1. Because x is the number of days.
16/10=1/1
16/10
1.6
'In conclusion, in 1 day, 1.6 cm will grow.
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How much is considered the maximal amount of medically unsupervised weight an adult should lose in one week
The maximal amount of medically unsupervised weight loss that an adult should aim for in one week is generally 1-2 pounds (0.5-1 kg). This is because losing weight too quickly can be harmful to your health and lead to a number of negative side effects, such as muscle loss, fatigue, dehydration, and gallstones.
It's important to note that the amount of weight an individual can lose in a week can vary depending on factors such as their starting weight, body composition, and overall health. In some cases, a doctor or other medical professional may recommend a faster rate of weight loss under close supervision, but this is generally reserved for people who are severely overweight or have medical conditions that require rapid weight loss.
Ultimately, it's important to approach weight loss in a healthy and sustainable way, with a focus on making long-term lifestyle changes rather than relying on quick fixes or fad diets. A balanced diet, regular exercise, and a consistent sleep schedule are all important components of a healthy weight loss plan.
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Julie is playing a game where she must flip 3 coins. If Julie flips all 3 coins and gets heads all three times, she wins. If Julie does not get heads all three times, she loses. This information was used to create the following tree diagram. What the probability of Julie winning the game
The probability of Julie winning the game by flipping 3 coins and getting heads all three times is 1/8, or 12.5%.
In the given tree diagram, there are three levels representing the three coin flips. At each level, there are two branches, one for heads and one for tails. Since Julie needs to get heads on all three flips to win, we follow the branch that leads to heads at each level.
Starting at the first level, there is a 1/2 chance of getting heads. Moving to the second level, there is another 1/2 chance of getting heads. Finally, at the third level, there is yet another 1/2 chance of getting heads.
To calculate the overall probability, we multiply the probabilities of each individual event:
1/2 * 1/2 * 1/2 = 1/8.
This means there is a 1 in 8 chance of Julie winning the game by flipping all three coins and getting heads each time.
In percentage terms, 1/8 can be expressed as 12.5%. Therefore, the probability of Julie winning the game is 12.5%.
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Penn State extension is interested in comparing the body length southern grass cicadas and citrus cicadas. The extension collected a random sample of 20 southern grass cicadas and found that they have a mean body length of 16.22 millimeters and a standard deviation of 1.34 millimeters. A separate random sample of 20 citrus cicadas resulted in a mean body length of 13.41 millimeters and a standard deviation of .73 millimeters. What is the standard error of the difference parentheses southern grass minus citrus) between the sample means
Answer:
The standard error between the sample mean is approximately 0.3412
Step-by-step explanation:
The equation for the standard error of a difference in sample mean of equal sample sizes is given as follows;
\(SE(\overline x_1 - \overline x_2)={\sqrt{\dfrac{s_{1}^{2} }{n_{1}}+\dfrac{s _{2}^{2}}{n_{2}}}}\)
The given parameters are;
The number of sample of southern grass cicadas, n₁ = 20
The mean body length of the southern grass cicadas, \(\overline x _1\) = 16.22 mm
The standard deviation, s₁ = 1.34 mm
The number of sample of citrus cicadas, n₂ = 20
The mean body length of the citrus cicadas, \(\overline x _2\) = 13.41 mm
The standard deviation, s₂ = 0.73 mm
\(SE(16.22 - 13.41)={\sqrt{\dfrac{1.34^{2} }{20}+\dfrac{0.73^{2}}{20}}} \approx 0.3412\)
The standard error between the sample mean, SE ≈ 0.3412
During the school year, a bus driver made 7 trips to the museum. The distance from the school to the museum is 36 miles. Write and solve equations to find how many miles the bus driver drove for the 7 trips.
Given:
Number of trips = 7
Distance from the school to the museum = 36 miles.
To find:
Write and solve equations to find how many miles the bus driver drove for the 7 trips.
Solution:
Let x be the number of trips and y be the total number of miles the bus driver drove.
Distance from the school to the museum = 36 miles.
1 trip means from the school to the museum and then from the museum to the school.
Distance covered in 1 trip = 2×36 = 72 miles.
Distance covered in x trips = 72x miles.
\(y=72x\)
Substitute x=7 in the above equation to find the total distance the bus driver drove for the 7 trips.
\(y=72(7)\)
\(y=504\)
Therefore, the bus driver drove 504 miles for the 7 trips.
Your aunt bought a new television. The television screen is a
rectangle.
The length of the television screen is 54 inches and the width is
30.4 inches.
What is the area of the television screen? What is the perimeter
of the television screen?
Use the given information to complete the worksheet.
Problem apr20 Client Version 7.7.14 Server Version 73.14
O
Length of the Television Screen
Width of the Television Screen
Perimeter of the Television Screen
Area of the Television Screen
DELL
Diagram Label
SC
CR
Area Formulas:
• Parallelogram: A = bh
• Square: A = s²
.
Value
54
30.4
168.8
Triangle: A = bh
•Trapezoid: A=h(b₁+ b₂)
Units
inches
inches
inches
square inches
©2021 Carneg
Oct 13
Answer:
area: 1641.6 square inchesperimeter: 168.8 inchesStep-by-step explanation:
You want the area and perimeter of a rectangle that is 54 inches in length and 30.4 inches in width.
AreaThe area formula is ...
A = bh
We can use the length as the "base" and the width as the "height", so we have ...
A = (54 in)(30.4 in) = 1641.6 in²
The area of the television screen is 1641.6 square inches.
PerimeterThe perimeter of a rectangle is given by the formula ...
P = 2(L +W)
Using the given length and width, the perimeter is found to be ...
P = 2(54 in + 30.4 in) = 2(84.4 in) = 168.8 in
The perimeter of the television screen is 168.8 inches.
The area of the rectangular television screen is 1641.6 square inches and the perimeter of the television screen is 84.4 inches.
What is the area of a rectangle?
The area a rectangle occupies is the space it takes up inside the limitations of its four sides. The dimensions of a rectangle determine its area. In essence, the area of a rectangle is equal to the product of its length and breadth. Its area is the space that the rectangle's boundary encloses.
Mathematically, area of a rectangle = length * width = l * w
What is the perimeter of a rectangle?
The perimeter is defined as the sum of all sides of the rectangle. Mathematically, perimeter of a rectangle = 2(length + width) = 2*(l + w)
Given, the length of the television screen = l = 54 inches
The width of the television screen = w = 30.4 inches
Using the formula mentioned in the literature above,
Area of the television screen = l * w = 54*30.4 = 1641.6 square inches
Also, perimeter of the television screen = l + w = 54 + 30.4 = 84.4 inches
Thus, the area of the rectangular television screen is 1641.6 square inches and the perimeter of the television screen is 84.4 inches.
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Use the tax table below to answer the following question.
A 9-column table with 7 rows is shown. Column 1 is labeled If the wages are at least with entries 720, 740, 760, 780, 800, 820, 840. Column 2 is labeled But less than with entries 740, 760, 780, 800, 820, 840, 860. Column 3 is labeled And the number of withholding allowances is 0, the amount of income tax withheld is, with entries 80, 83, 86, 89, 92, 95, 98. Column 4 is labeled And the number of withholding allowances is 1, the amount of income tax withheld is, with entries 62, 65, 68, 71, 74, 77, 80. Column 5 is labeled And the number of withholding allowances is 2, the amount of income tax withheld is, with entries 44, 47, 50, 53, 56, 59, 62. Column 6 is labeled And the number of withholding allowances is 3, the amount of income tax withheld is, with entries 26, 28, 31, 34, 37, 40, 43. Column 7 is labeled And the number of withholding allowances is 4, the amount of income tax withheld is, with entries 14, 16, 18, 20, 22, 24, 26. Column 8 is labeled And the number of withholding allowances is 5, the amount of income tax withheld is, with entries 1, 3, 5, 7, 9, 11, 13. Column 9 is labeled And the number of withholding allowances is 6, the amount of income tax withheld is, with entries 0, 0, 0, 0, 0, 0, 1.
Consider cases where the number of withholding allowances is less than 6. Which will cause the amount of federal income tax withheld to increase?
a.
Gross pay stays the same and withholding allowances increase.
b.
Gross pay increases by more than $20 and withholding allowances stay the same.
c.
Gross pay increases by more than $20 and withholding allowances increase.
d.
Gross pay decreases by more than $20 and withholding allowances stay the same.
Using percentages we know that the amount of the state tax which is paid by the Luce for no federal withholding allowances is $16.34.
What is the Percentage?Hundredths of any quantity are represented by a relative number called a percentage.
Since one percent is represented by the sign 1%, 100 percent, and 200 percent respectively imply the complete amount and double the amount.
A ratio or fraction can be changed into a percentage by multiplying by 100 and adding the "percentage sign"%.
So, Luce is unmarried and earns $763 twice per week.
She makes no claims for federal withholding benefits.
This sum falls between $760 and $780 in value.
The federal tax for this slab is $86 if we look at the table included in the issue.
State taxes now equal 19% of federal taxes.
Consequently, the $86 in federal tax at 19 percent is:
Tax = 86 * 19/100
Tax = 16.34
Therefore, using percentages we know that the amount of the state tax which is paid by the Luce for no federal withholding allowances is $16.34.
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Correct question:
Use the tax table to help answer the following question.
A 9-column table with 7 rows is shown. Column 1 is labeled If the wages are at least with entries 720, 740, 760, 780, 800, 820, 840. Column 2 is labeled But less than with entries 740, 760, 780, 800, 820, 840, 860. Column 3 is labeled And the number of withholding allowances is 0, the amount of income tax withheld is, with entries 80, 83, 86, 89, 92, 95, 98. Column 4 is labeled And the number of withholding allowances is 1, the amount of income tax withheld is, with entries 62, 65, 68, 71, 74, 77, 80. Column 5 is labeled And the number of withholding allowances is 2, the amount of income tax withheld is, with entries 44, 47, 50, 53, 56, 59, 62. Column 6 is labeled And the number of withholding allowances is 3, the amount of income tax withheld is, with entries 26, 28, 31, 34, 37, 40, 43. Column 7 is labeled And the number of withholding allowances is 4, the amount of income tax withheld is, with entries 14, 16, 18, 20, 22, 24, 26. Column 8 is labeled And the number of withholding allowances is 5, the amount of income tax withheld is, with entries 1, 3, 5, 7, 9, 11, 13. Column 9 is labeled And the number of withholding allowances is 6, the amount of income tax withheld is, with entries 0, 0, 0, 0, 0, 0, 1.
Luce is single and makes $763 biweekly. She claims no federal withholding allowances. If the state tax is 19% of the federal tax, how much in state tax does Luce contribute?
a. $12.92
b. $15.13
c. $15.77
d. $16.34
There are black and white counters in a bag in the ratio 20:17
There are 54
more black counters than white counters.
How many black counters are there?
There are 360 black counters and 306 white counter in 20:17 ratio.
Let's denote the number of black counters by B and the number of white counters by W. We know that the ratio of black to white counters is 20:17, which means that:
B/W = 20/17
We also know that there are 54 more black counters than white counters, which means that:
B = W + 54
We can use substitution to solve for B. Substituting the second equation into the first equation, we get:
(W + 54)/W = 20/17
Cross-multiplying, we get:
17(W + 54) = 20W
Expanding the left side, we get:
17W + 918 = 20W
Subtracting 17W from both sides, we get:
918 = 3W
Dividing both sides by 3, we get:
W = 306
Now we can use the second equation to find B:
B = W + 54 = 306 + 54 = 360
Therefore, there are 360 black counters in the bag.
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A cyclist rides into the country at an average speed of 10 miles per hour. When his bike gets a flat tire, he walks it back at an average speed of 3 miles per hour. If he returns home 6 and a half hours after he starts, how far into the country does he go?
The distance the cyclist traveled into the country, given that he rides into the country at an average speed of 10 miles per hour is 15 miles
How do i determine the distance traveled?Let the total distance traveled into the country be y.
Now, we shall determine the riding time. Details below:
Speed = 10 mile per hourDistance traveled = yRiding time = ?Riding time = Distance / speed
Riding time = y / 10
Next, we shall obtain the walking time of the cyclist. This is shown below:
Speed = 3 mile per hourDistance traveled = yWalking time = ?Walking time = Distance / speed
Riding time = y / 3
Finally, we shall obtain the total distance traveled. This is illustrated below:
Riding time = y / 10Riding time = y / 3Total time = 6.5 hoursTotal distance = y =?Total time = riding time + walking time
6.5 = y/10 + y/3
6.5 = (3y + 10y) / 30
6.5 = 13y / 30
Cross multiply
13y = 6.5 × 30
13y = 195
Divide both sides by 13
y = 195 / 13
y = 15 miles
Thus, the total distance traveled by the cyclist into the country is 15 miles.
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Find the indicated function value.
(1 Point)
Given f (x) = x2 - 4x + 2, find f(-1).
05
O-2
07
O 6x + 4
Answer:
f(x)=x²-4x+2
f(-1)= (-1)²-4(-1)+2
= 1+4+2
=7