Answer:
Step-by-step explanation:
A.) either terminates in 0's or repeats.
Some decimals repeat and some decimals don't.
What is an advantage of using a credit card ?
Step-by-step explanation:
The advantage of using a credit card is its easy access to credit
karen works for 85 hours throughout a two-week period. She earns $2,891.25 throughout this period. How much does karen earn for 8 hours
pls help me giving 33 points! enjoy <3
In the diagram below, the line of sight from the park ranger station, P, to the lifeguard chair, L, on the beach of a lake is perpendicular to the path joining the campground, C, & the first aid station, F. The campground is 0.35 mile from the lifeguard chair. The straight paths from both the campground and first aid station to the park ranger station are perpendicular.
If the path from the park ranger station to the campground is 0.65 mile, determine and state, to the nearest
hundredth of a mile,
a. Find the length of PL
Whwn the line of sight from the park ranger station, P, to the lifeguard chair, L, the length of PL is 0.76 miles.
How to calculate the valueIt should be noted that since the line of sight from the park ranger station, P, to the lifeguard chair, L, on the beach of a lake is perpendicular to the path joining the campground, C, and the first aid station, F, then the path from the park ranger station to the lifeguard chair is the hypotenuse of a right triangle with legs of 0.35 miles and 0.65 miles.
The Pythagorean theorem states that in a right triangle, the square of the hypotenuse is equal to the sum of the squares of the legs. Therefore, the length of PL is equal to:
= ✓(0.35² + 0.65²)
= 0.76 miles.
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[3]
(b)
Calculate the values of c for which 2x2 – 3x + c>-2 for all values of x.
Answer:
c > -7/8
Step-by-step explanation:
Add 2 for an inequality that compares to zero:
2x^2 -3x +(c+2) > 0
This will be true when the discriminant is negative. For the quadratic ...
ax^2 +bx +c
the discriminant is ...
b^ -4ac
We want this to be negative:
(-3)^2 -4(2)(c+2) < 0
9 -8(c +2) < 0
9 -8c -16 < 0
-7 < 8c
-7/8 < c
The given inequality will be true for all values of c greater than -7/8.
Find the slope of the secant line of the function f(x)=x2−5x+5
(a) On the interval [1,3]
(b) On the interval [1,2]
(c) On the interval [0,1]
(d) Use the slope of the secant lines computed in parts (b) and (c) above to estimate the slope of the tangent line of f(x) at =1
Answer:
Step-by-step explanation:
Given function is f(x) = x² - 5x + 5
(a). Slope of the secant of the function in the interval [1, 3],
m = \(\frac{\triangle y}{\triangle x}\)
For x = 1
\(y_1\) = (1)²- 5(1) + 5
\(y_1\) = 1
For x = 3,
\(y_2\) = (3)² - 5(3) + 5
\(y_2\) = 9 - 15 + 5
\(y_2\) = -1
Slope 'm' = \(\frac{y_2-y_1}{x_2-x_1}\)
m = \(\frac{1+1}{1-3}\)
m = -1
(b). Slope of the secant of the function in the interval [1, 2],
m = \(\frac{\triangle y}{\triangle x}\)
For x = 1,
\(y_1\) = 1 [From part a]
For x = 2,
\(y_2=\) (2)² - 5(2) + 5
= 4 - 10 + 5
= -1
Slope = \(\frac{-1-1}{2-1}\)
= -2
(c). Slope of the secant of the function in the interval [0, 1]
For x = 0,
\(y_1=0-5(0)+5\)
= 5
For x = 1
\(y_2=-1\) [From part (b)]
m = \(\frac{5+1}{0-1}\)
= -6
(d). Derivative of the function 'f',
f'(x) = 2x - 5
At x = 1,
f'(x) = 2(1) - 5
= -3
Slope of the tangent = -3
a) The slope of the secant line of the function on the interval [1, 3] is -1.
b) The slope of the secant line of the function on the interval [1, 2] is -2.
c) The slope of the secant line of the function on the interval [0, 1] is -4.
d) The estimated slope of the tangent line of \(f(x)\) at \(x = 1\) is -3.
Procedure - Determination of slopes of secant linesLet \(f(x)\) be a differentiable curve, the slope of a line secant to that curve (\(m_{AB}\)) is defined by the following expression:
\(m_{AB} = \frac{f(b)-f(a)}{b-a}\), \(a \ne b\) (1)
a) On the interval \([1,3]\)If we know that \(f(x) = x^{2}-5\cdot x + 5\), \(a = 1\) and \(b = 3\), then the slope of the secant line is:
\(m_{AB} = \frac{-1-1}{3-1}\)
\(m_{AB} = -1\)
The slope of the secant line of the function on the interval [1, 3] is -1. \(\blacksquare\)
b) On the interval \([1, 2]\)If we know that \(f(x) = x^{2}-5\cdot x + 5\), \(a = 1\) and \(b = 2\), then the slope of the secant line is:
\(m_{AB} = \frac{-1-1}{2-1}\)
\(m_{AB} = -2\)
The slope of the secant line of the function on the interval [1, 2] is -2. \(\blacksquare\)
c) On the interval \([0, 1]\)If we know that \(f(x) = x^{2}-5\cdot x + 5\), \(a = 0\) and \(b = 1\), then the slope of the secant line is:
\(m_{AB} = \frac{1-5}{1-0}\)
\(m_{AB} = -4\)
The slope of the secant line of the function on the interval [0, 1] is -4. \(\blacksquare\)
d) Estimation of the slope at \(x = 1\)The slope of the tangent line of \(f(x)\) at \(x = 1\) can be estimated by concept of weighted averages, whose application is shown below:
\(m = \left(\frac{1-0}{2-0}\right)\cdot (-4) + \left(\frac{2-1}{2-0} \right)\cdot (-2)\)
\(m = -3\)
The estimated slope of the tangent line of \(f(x)\) at \(x = 1\) is -3. \(\blacksquare\)
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Find the percent increase. Round to the nearest percent. From 95 books to 153 books
Answer:
62%
Step-by-step explanation:
(The part/ the whole)× 100
(95/153) = 0.62
0.62×100 = 62%
Help please !/!/!/!/!/!/!/!/
Answer: 40
Step-by-step expla
1.
Given the function c(y) = -6y-5, find each value.
a. c(-4)=
Step-by-step explanation:
Given
the function c(y)=-6y-5
Now put y=-4
we get
c(-4)=-6(-4)-5
c(-4)=24-5
c(-4)=19
therefore the value of c(-4) is 19
1. If x and y are vertical angles, then y _____ has the same measure as x.
2. If x and y are adjacent angles, then x and y are ____ acute
Fill in blank with (sometimes, never, always)
Someone please help me for brainliest and 30 points. Please DO NOT answer if u don’t know. And do not put in the comment here’s a link cause it leads to no where. Ty.
Answer: 1. Sometimes 2. Always
Step-by-step explanation:
I am pretty sure these are right.
Kaitlyn is mowing her lawn. The lawn has an area of 5,625 square feet. She can mow about 75 square feet each minute. Which equation represents the amount of lawn, y, that Kaitlyn still has left to mow after x minutes?
A) y = 5,625 – 75x
B) y = 5,625 (x – 75)
C) y = 5,625 + 75x
D) y = 5,625 (75 – x)
TEXT ANSWER
A dog weighs 45 pounds 12 ounces. How much does the dog weigh in kilograms?
If needed, round your answer to the nearest hundredth.
Conversion ratios:
• 1 lb = 16 oz
1 kg = 2.2 lb
Use the equation editor to show your work.
.
Answer:
20,45 kg,
Step-by-step explanation:
45 Lb * (1 kg / 2,2 Lb) + (12 Austrália * (1 kg / 35 ,2 Austrália)) = 20,45 kg
Um resposta é 20,45 kg.
If triangles ABC and DEF are similar, what is y? Show your work.
The value of y is 18
What are similar triangles?Similar triangles have the same corresponding angle measures and proportional side lengths. The angles of the two triangle must be equal and it not necessary they have equal sides.
Therefore the corresponding angles of similar triangles are congruent and the ratio of corresponding sides of similar triangles are equal.
Therefore;
14/21 = 12/y
14y = 21 × 12
14y = 252
divide both sides by 14
y = 252/14
y = 18
Therefore the value of y is 18.
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If x − √a is a factor of 2x4 − 2a 2x 2 − 3x + 2a3 − 2a2 + 3 , find the value of a.
Answer:
\(\boxed{\sf \ \ \ a = 1 \ \ \ }\)
Step-by-step explanation:
Hello,
saying that \(x-\sqrt{a}\) is a factor means that \(\sqrt{a}\) is a zero which means
\(2(\sqrt{a})^4-2a^2(\sqrt{a})^2-3*\sqrt{a}+2a^3-2a^2+3=0\\\\<=> 2a^2-2a^3-3*\sqrt{a}+2a^3-2a^2+3=0\\\\<=>3-3*\sqrt{a}=0\\\\<=>\sqrt{a}=\dfrac{3}{3}=1\\\\<=> a = 1\)
so the solution is a = 1
Do not hesitate if you have any question
Identify the range of the function shown in the graph.
Answer:
B.
Step-by-step explanation:
the range is the y values of the line.
so it would be [3, 6]
The sum of three times a number, x, and 12
Answer:
the number of the x is 5 and the number of the Y is 10
Step-by-step explanation:
school
A new pet food product for small dogs has been developed to help with tooth decay. Fifty-two dogs participate in the study. Each dog owner picks a card from a standard deck out of a hat. If the card is red, their dog will be in the treatment group. If the card is black, their dog will be in the placebo group. Which experimental design was used?
a. Randomized Block Design
b. Completely Randomized Design
c. Case-Control Design
d. Matched-Pair Design
Answer: B. Completely Randomized Design
Step-by-step explanation:
A completely randomized design is an experimental design such that treatments are assigned at random completely in order for each experimental unit to have same chance of receiving treatment.
In this scenario, since all the dogs are randomly assigned treatment by picking a card without taking into consideration other factors, then we can infer that thus is a completely randomized design.
The table shows the amount of money that Sarah charges customers to sell newspapers. The table represents a linear functions.
Question 10 options:
Sarah charges $5 before she begins selling newspapers
Sarah does not charge her costumers unless she has sold newspapers for at least 2 hours
Sarah charges $5 an hour to sell newspapers
Sarah earns 7$ for 1 hours of work
Figured it out, It's the 1st answer, Sarah charges $5 before she begins
The linear function y = 2x + 5 shows that Sarah charges $5 as fixed amount before she begins selling newspapers.
The table representing amount of money which Sarah charges her customers to sell newspapers.
Let us consider 'x' represents the time per hour charges taken by Sarah from customers.
In the table,
For zero hours charges are $5.
It means Fixed charges taken by Sarah to sell newspaper.
Difference between the rate per hour is,
$7 - $5 = $2
$9 - $7 = $2
It represents for Sarah charges $2 per hour.
let us consider 'y' that represents total amount charges by Sarah.
Required linear function for selling news paper and charging amount is
y = $5 + 2x
⇒ y = 2x + 5
Therefore, the linear function y = 2x + 5 represents option 1. Sarah charges $5 before she begins selling newspapers.
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A house on the market was valued at 389,000. After several years, the value decreased by 7%. By how much did the house value decreased in the dollars? What is the current value of the house?
Answer:
The decrease in the house value was $27,230
The current value is ($389,000 - $27,230), or $361.770
Step-by-step explanation:
The decrease was 7%. In dollars, that comes to 0.07($389,000), or $27,230: The decrease in the house value was $27,230.
Hi can any one teach me this constant difference
The constant differences between the consecutive terms are 2 (a); 2 (b), -3 (c), 7 (d), 1(e), and 6(f).
How do you find the constant difference in a sequence of numbers?In math, the constant difference can be defined as the number that defines the pattern of a sequence of numbers. This means that number that should be added or subtracted to continue with the sequence.
Due to this, to determine the constant difference it is important to observe the pattern and find out the number that should be added. For example, if the sequence is 2, 4, 6, 8, there is a difference of 2 between each of the numbers and this is the constant difference.
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Alex can eat 8 hotdogs in 11
12 minutes. At this rate,
how many hotdogs can
Alex eat in three
minutes?
Answer:
Step-by-step explanation: It is a rate problem. If Alex can eat 8 hotdogs in 12 mins, you just divide 12/4=3 mins. Then, divide the hotdogs. 8/4=2
So: Alex can eat 2 hotdogs in 3 minutes
Divide the following binomials by given monomials ; (9x2 + 6x) by 3x
Answer:
= 27x + 2xStep-by-step explanation:
hope that will help you
Sample response: The product of two numbers with
different signs is negative, so 2(-12) = -24, not 24. Then
-24-(-30) = -24 + 30 = 6.
Select all the information you considered when writing
your response.
The product or quotient of two integers with
different signs is negative.
To subtract an integer, add its opposite.
To add integers with opposite signs, subtract the
absolute values. The sum has the same sign as the
integer with the greater absolute value.
By considering these rules and properties of integers, the correct result of 6 was obtained.
When writing the response, I considered the following information:
The product or quotient of two integers with different signs is negative. This rule was used to determine that 2(-12) equals -24, not 24.
To subtract an integer, add its opposite. This rule was applied when subtracting -30 from -24, resulting in -24 - (-30) = -24 + 30.
To add integers with opposite signs, subtract the absolute values. The sum has the same sign as the integer with the greater absolute value.
This rule was used to calculate -24 + 30 = 6, where the absolute value of 30 is greater than the absolute value of -24.
By considering these rules and properties of integers, the correct result of 6 was obtained.
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Brent bought 8 potted plants for his co-workers. Each plant cost $5.76. How much money did he spend on his co-workers?
A.
$45.98
B.
$46.08
C.
$40.32
D.
$47.08
Answer:
B: $46.08
Step-by-step explanation:
There are 8 co-workers, and each plant costs $5.76, so we multiply 8*5.76 to get $46.08.
Answer:
B
Step-by-step explanation:
because $5.76×8=$46.08
Francium is an element with a half-life of 22 minutes. 1000 grams of francium is placed into a bowl determine how much Francium (in grams) will be left after 2 hours
The amount of the element, Francium, that will remain after 2 hours is 31.25 grams.
Half-life problemTo determine how much francium will be left after 2 hours, we need to calculate the number of half-lives that occur within that time period.
Given that the half-life of francium is 22 minutes, we can calculate the number of half-lives in 2 hours (120 minutes):
Number of half-lives = (Total time elapsed) / (Half-life)
Number of half-lives = 120 minutes / 22 minutes ≈ 5.4545
Since we can't have a fraction of a half-life, we take the integer part, which is 5.
Each half-life represents a halving of the amount of francium. So, after 5 half-lives, the remaining amount of francium can be calculated using the formula:
Remaining amount = Initial amount * (1/2)^(Number of half-lives)
Given that the initial amount is 1000 grams, we can calculate the remaining amount after 2 hours:
Remaining amount = 1000 grams * \((1/2)^5\)
Remaining amount ≈ 1000 grams * 0.03125
Remaining amount ≈ 31.25 grams
Therefore, after 2 hours, approximately 31.25 grams of francium will be left.
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Find value of b and A
Answer:
Hi
Step-by-step explanation:
Please paste your question so I can solve it
Thanks
What is the volume of this triangular pyramid
Answer:
The right triangular pyramid volume is given by the formula V = 1 3 × B × h , where B is the area of the triangular base and h is the height (the distance from the apex to the base).
Step-by-step explanation:
Answer:
192 cubic feet
Step-by-step explanation:
The volume V of a triangular pyramid is given by the formula:
V = (1/3) * base area * height
where base area is the area of the triangular base.
In this case, the triangular base has a length of 8 ft and a width of 8 ft, so it is a square with area:
base area = length * width = 8 ft * 8 ft = 64 sq ft
Substituting the given values into the formula, we get:
V = (1/3) * 64 sq ft * 9 ft
V = 192 cubic feet.
Therefore, the volume of the triangular pyramid is 192 cubic feet.
The mass of a teapot and 4 cups is 1,280 grams. The mass of the same teapot and 10 cups is 2,720 grams. Each cup has the same mass. What is the mass?
The mass per cup for the objects will be 320g and 272g respectively.
What is mass?Mass simply means the weight that an object contains.
The mass of a teapot and 4 cups is 1,280 grams. The mass per cup will be:
= Mass / Number of cups
= 1280 / 4
= 320g
The mass of the same teapot and 10 cups is 2,720 grams. The mass per cup will be:
= 2720 / 10
= 272g
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help plz The total cost of a shirt and a jacket was $99.34. If the price of the shirt was $7.76 less than the jacket, what was the price of the shirt? Express your answer as a simplified fraction or a decimal rounded to two places.
Answer: Shirt costs $45.79
Step-by-step explanation:
jacket- x
shirt (x-7.76)
x+x-7.76=99.34
2x - 7.76 = 99.34
2x = 107.10
x=53.55
Jacket costs 53.55 and Shirt costs 53.55-7.76= 45.79
-4n>5 match inequality to it corresponding statement
Answer:
n<-1.25
Step-by-step explanation:
work out the area of the circle
take pi to be 3.142 give your answer to 1 decimal place
radius 8
The area of the circle with the given radius is 201.088 square units.
What is area of a circle?The area of a circle is the space occupied by the circle in a two-dimensional plane. Alternatively, the space occupied within the boundary/circumference of a circle is called the area of the circle. The formula for the area of a circle is A = πr², where r is the radius of the circle.
Given that, the radius of a circle is 8 units.
Here, area of a circle
= 3.142×8²
= 3.142×64
= 201.088 square units
Therefore, the area of the circle is 201.088 square units.
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