Answer:
whats the question?
Step-by-step explanation:
i need to factor 1/2y-5 1/2 and i can't seem to get it
The factored form of the equation is 1/2(y - √5)
To factor this expression, we need to look for any common factors that can be pulled out of both terms. We can see that both terms contain a factor of 1/2, so we can factor that out:
1/2(y - 5 1/2)
Now we need to see if there are any further factors that we can find. The term inside the parentheses, y - 5 1/2, cannot be factored any further using real numbers. However, we can write the expression as y - √5, which shows that it involves the square root of 5.
So the final factored form of the expression is:
1/2(y - √5)
This means that if we multiply 1/2 by (y - √5), we get back the original expression 1/2y - 5 1/2.
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(4) During the day the temperature in Tom's greenhouse
increases from -5 °C to 5 °C. What is the rise in temperature?
(5) The temperature this morning was -6 °C. This afternoon, the
temperature dropped by 4 degrees. What is the new
temperature?
(6) Draw a number line from -5 to 5. Write down the integer that
is halfway between the two numbers in each pair below.
a. 1 and -5
b. 5 and 1
c. -3 and 5
d. -3 and -5
(7) The difference between two temperatures is 3 degrees.
One temperature is 2°C.
What is the other temperature?
T
-5
-4 -3 -2
-1
The Number Systems
4
5
Road
The values are (4) The value of rise in temperature is 10 °C, (5) The new temperature is -10 °C (6) halfway between the two numbers in each pair is -2, 3, 1, -4; (7) The other temperature is 1°C.
What is integer?Zero, a positive natural number, or a negative integer denoted by a minus sign are all examples of integers. The inverse additives of the equivalent positive numbers are the negative numbers. The set of integers is frequently represented in mathematical notation by the boldface Z or blackboard bold math Z.
Given that,
Tom’s greenhouse temperature is increasing
(4) The temperature is increased from -5 °C to 5 °C
The temperature is raised by 10 °C
(5) The temperature this morning was -6 °C. This afternoon, the
temperature dropped by 4 degrees
The new temperature is -10 °C
(6) The integer that
is halfway between the two numbers in each pair below.
a. 1 and -5 is -2
b. 5 and 1 is 3
c. -3 and 5 is 1
d. -3 and -5 is -4
(7) The difference between two temperatures is 3 degrees.
One temperature is 2°C.
The other temperature is 1°C.
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the product of 263 and v is equal to the quotient of 215 and r
Answer:
263 · v = 215 ÷ r
Step-by-step explanation:
I hope this helps!
Please can you help me x
Answer:
PX : XQ = 2 : 5
Step-by-step explanation:
Since RX is perpendicular to PQ , then
Δ RPX and Δ RQX are right triangle
Calculate PX and XQ using Pythagoras' identity in the right triangles
PX² = 20² - 16² = 400 - 256 = 144 ( take square root of both sides )
PX = \(\sqrt{144}\) = 12
Similarly
XQ² = 34² - 16² = 1156 - 256 = 900 ( take square root of both sides )
XQ = \(\sqrt{900}\) = 30
Then
PX : XQ = 12 : 30 = 2 : 5 ( in simplest form )
1/4 of a number is 6.What is 50% of that number?
Answer:28
Step-by-step explanation:
which benchmark is between 17/12 and 8/12?
Answer:
Step-by-step explanation:
fraction
a magazine provided results from a poll of 22 adults who were asked to identify their favorite pie. among the respondents, 48% chose chocolate pie. if the confidence level is 90%, calculate the confidence interval for the proportion of adults who identify chocolate pie as their favorite pie.
The confidence interval for the proportion of adults who identify chocolate pie as their favorite pie can be calculated using the following formula:
Confidence Interval = Sample Proportion ± Margin of Error
First, we need to calculate the sample proportion. In this case, the sample proportion is equal to the percentage of respondents who chose chocolate pie, which is 48%.
Sample Proportion = 48% = 0.48
Next, we need to calculate the margin of error. The margin of error depends on the confidence level and the sample size. In this case, the confidence level is 90%, which corresponds to a z-score of 1.645 (obtained from a z-table). The sample size is 22.
Margin of Error = z * sqrt((Sample Proportion * (1 - Sample Proportion)) / Sample Size)
= 1.645 * sqrt((0.48 * (1 - 0.48)) / 22)
= 0.229
Now we can calculate the confidence interval.
Confidence Interval = Sample Proportion ± Margin of Error
= 0.48 ± 0.229
= (0.251, 0.709)
The confidence interval for the proportion of adults who identify chocolate pie as their favorite pie is (0.251, 0.709) at a 90% confidence level.
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Will give brainliest
What is the measure of angle P in the figure shown here?
Answer:
48
Step-by-step explanation:
66*2=132
180-132=48
Kaitlin sold t-shirts at a festival and made a profit of $71 . She made $4 for each t-shirt she sold. Her total expenses were $25 . How many t-shirts did she sell?
The t-shirts she sell is 24.
What is profit and selling price?
Profit is considered as the gain amount from any business activity. Whenever a shopkeeper sells a product, his motive is to gain some benefit from the buyer in the name of profit.
The selling price is the price that the buyer pays to buy a product or goods. This is a price above cost and includes a profit ratio.
According to Question, Christine sold the t- shirts at $4 each and she earned a profit of $71 and his total expenses were $25
Let the total number of t- shirts sold by Christine be "x"
Profit = Selling price – Expenses
Selling price is given as:
selling price = total number to t-shirt sold ×price of each t shirt
selling price = n ×4
71 = (n×4) -24
71 + 25 = n×4
96/4 = n
n = 24
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I will give brand list
Answer:
5/4
Explanation:
coordinates given (0,0) and (8,10)
How to find unit rate?
use this formula:
(y2-y1)/(x2-x1)
using the formula:
→(10-0)/(8-0)
→ 10/8
→ 5/4
→ 1.25
Answer:
5/4 cm/s
Step-by-step explanation:
The gradient (slope) of the line is equal to the speed of the object.
Gradient = change in y ÷ change in x
Using the two given points (0, 0) and (8, 10):
⇒ speed = (10 - 0) ÷ (8 - 0) = 5/4 cm/s
brandon decided to make his own hand sanitizer. To be effective the sanitizer needs to contain 60% of alcohol. Brandon mixes 50 ml pure alchol with 45 ml of water. Is this hand sanitizer effective
Answer:no it is not effective n it has 50%alcohol
Step-by-step explanation:
A soft drink vendor at a popular beach analyzes his sales records and finds that if he sells xcans of soda pop in one day, his profit (in dollars) is given by P(x) 0.001x2 3x 1800 What is his maximum profit per day, and how many cans must he sell to reach the maximum profit?
The soft drink vendor's maximum profit per day is $5250, and he must sell 1500 cans of soda pop to reach the maximum profit.
To find the maximum profit per day for the soft drink vendor, we need to use the formula P(x) = 0.001x^2 + 3x + 1800, where x is the number of cans of soda pop sold in one day.
To find the maximum profit, we need to find the vertex of the parabola represented by the profit function. The x-coordinate of the vertex is given by -b/2a, where a = 0.001 and b = 3. Plugging in these values, we get x = -3/(2*0.001) = -1500.
Since the soft drink vendor cannot sell a negative number of cans, we know that the maximum profit occurs at the closest whole number to x = -1500, which is x = 1500.
To find the maximum profit per day, we can plug in x = 1500 into the profit function:
P(1500) = 0.001(1500)^2 + 3(1500) + 1800 = $5250
Therefore, the soft drink vendor's maximum profit per day is $5250, and he must sell 1500 cans of soda pop to reach the maximum profit.
To find the maximum profit per day and the number of cans needed to reach that profit, we'll first need to find the critical point of the given quadratic profit function, P(x) = -0.001x^2 + 3x - 1800.
Step 1: Find the derivative of P(x) with respect to x. This will give us the rate of change of profit as the number of cans sold changes.
P'(x) = -0.002x + 3
Step 2: Set the derivative equal to zero and solve for x. This will give us the critical point where the maximum profit occurs.
-0.002x + 3 = 0
x = 1500 cans
Step 3: Substitute the critical point (x = 1500) back into the profit function P(x) to find the maximum profit.
P(1500) = -0.001(1500)^2 + 3(1500) - 1800
P(1500) = $600
So, the maximum profit per day is $600, and the soft drink vendor must sell 1500 cans to reach the maximum profit.
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The maximum profit per day is $4800, and the vendor must sell 1500 cans of soda pop to reach this maximum profit.
The profit function for the soft drink vendor is given by:
P(x) = \(0.001x^2 + 3x + 1800\)
To find the maximum profit, we need to find the vertex of the parabola represented by this function. The x-coordinate of the vertex can be found using the formula:
x = -b / (2a)
where a = 0.001 and b = 3. Substituting these values, we get:
x = -3 / (2 * 0.001) = -1500
Since the value of x cannot be negative in this context, we know that the maximum profit occurs at x = 1500. To find the maximum profit, we substitute this value of x into the profit function:
P(1500) =\(0.001(1500)^2 + 3(1500) + 1800 = $4800\)
Therefore, the maximum profit per day is $4800, and the vendor must sell 1500 cans of soda pop to reach this maximum profit.
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please interact if you know the answer!
Answer:
Step-by-step explanation:
1.
The supplementary angles to ∠x are adding to 180° and are ∠HGC and ∠BGA
2.
If ∠DGE = 90° , then
∠CGD is also 90° because ∠DGE and ∠CGD are a linear pair and
∠HGC is also 90° because ∠DGE and ∠HGC are vertical angles
For Questions 16 – 18, refer to the problem below. Consider the following set of simultaneous equations. 3x − 4y = −42 (i)
2x + 6y = 50 (ii)
16. If x is made the subject of the formula in equation (ii), then:
A x = 3y + 25 B x = −3y + 25 C x = −6y + 50 D x = −3y − 25
17. If x is eliminated in equation (i) then:
A −13y = −117 B 13y = −117 C 15y = 124
D 16y = 215
Answer:
Step-by-step explanation:
the data set in ceosal2 contains information on chief executive officers for u.s. corporations. the variable salary is annual compensation, in thousands of dollars, and ceoten is prior number of years as company ceo. find the average salary and the average tenure in the sample. how many ceos are in their first year as ceo (that is, ceoten
After calculation, the average salary is 865.8644 thousands of dollars and average tenure is 7.955 years. Number of CEOs who are in their first year as CEO is equal to 5.
Here are the steps in R Studio to perform the tasks:
(a) Finding the average salary and the average tenure in the sample:
Load the CEOSAL2 data set in R Studio using the read.csv function.
ceos <- read.csv("CEOSAL2.csv")
Calculate the average salary using the mean function:
average_salary <- mean(ceos$salary)
Calculate the average tenure using the mean function:
average_tenure <- mean(ceos$ceoten)
(b) Finding the number of CEOs in their first year as CEO and the longest tenure as CEO:
Use the sum function and a logical test to count the number of CEOs in their first year as CEO:
first_year_ceos <- sum(ceos$ceoten == 0)
Use the max function to find the longest tenure as CEO:
longest_tenure <- max(ceos$ceoten)
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Rewrite the expression 2(x + 5) using the Distributive Property.
Answer:
2x + 10
Step-by-step explanation:
To expand (using the distributive property) multiply the number outside the bracket i.e. in this case '2', with the values inside the brackets.
So multiply '2' and 'x' and '2' and 5' and add or subtract on basis of whether the second value is positive or negative.
So
2(x + 5)
= (2*x)+(2*5)
=2x+10
extention note: be careful when the symbol within the equation within the brackets is a subtraction because it implies that the second value would instead be a negative number and should be treated as such.
an example
2(x-5)
= (2*x)+(2*-5)
=2x -10
Anyhow, I hope this helped!
Pls solve with all steps
The results of the expressions involving logarithms are listed below:
Case 1: 1 / 2
Case 2:
Subcase a: 0
Subcase b: 11 / 2
Subcase c: - 11 / 2
How to simplify and evaluate expressions involving logarithmsIn this problem we have a case of an expression involving logarithms that must be simplified and three cases of expressions involving logarithms that must be evaluated. Each case can be solved by means of the following logarithm properties:
㏒ₐ (b · c) = ㏒ₐ b + ㏒ₐ c
㏒ₐ (b / c) = ㏒ₐ b - ㏒ₐ c
㏒ₐ cᵇ = b · ㏒ₐ c
Now we proceed to determine the result of each case:
Case 1
㏒ ∛8 / ㏒ 4
(1 / 3) · ㏒ 8 / ㏒ 2²
(1 / 3) · ㏒ 2³ / (2 · ㏒ 2)
㏒ 2 / (2 · ㏒ 2)
1 / 2
Case 2:
Subcase a
㏒ [b / (100 · a · c)]
㏒ b - ㏒ (100 · a · c)
㏒ b - ㏒ 100 - ㏒ a - ㏒ c
3 - 2 - 2 + 1
0
Subcase b
㏒√[(a³ · b) / c²]
(1 / 2) · ㏒ [(a³ · b) / c²]
(1 / 2) · ㏒ (a³ · b) - (1 / 2) · ㏒ c²
(1 / 2) · ㏒ a³ + (1 / 2) · ㏒ b - ㏒ c
(3 / 2) · ㏒ a + (1 / 2) · ㏒ b - ㏒ c
(3 / 2) · 2 + (1 / 2) · 3 + 1
3 + 3 / 2 + 1
11 / 2
Subcase c
㏒ [(2 · a · √b) / (5 · c)]⁻¹
- ㏒ [(2 · a · √b) / (5 · c)]
- ㏒ (2 · a · √b) + ㏒ (5 · c)
- ㏒ 2 - ㏒ a - ㏒ √b + ㏒ 5 + ㏒ c
- ㏒ (2 · 5) - ㏒ a - (1 / 2) · ㏒ b + ㏒ c
- ㏒ 10 - ㏒ a - (1 / 2) · ㏒ b + ㏒ c
- 1 - 2 - (1 / 2) · 3 - 1
- 4 - 3 / 2
- 11 / 2
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what is the correlation
Answer: moderate, C, B
Step-by-step explanation:
A) A shows a moderate negative correlation. It is moderate because the scattered points are sort of close to the line so it has moderate/medium correlation. It is also negative because it has a negative slope
B) C shows the strongest correlation because the points around the line are tight and close.
C) B should not have been drawn. The correlation is very weak. You do know where the line should be because the points are all over the place.
What are the 10 expressions?
The 10 expressions in Math are:
1. Sum 2. Difference 3. Product 4. Quotient 5. Exponent 6. Root 7. Absolute Value 8. Factor 9. Power 10. FractionUnderstanding the Basics of Math Through the 10 ExpressionsMath is a subject that can be intimidating to many, but it is a fundamental part of life that is necessary to understand. It is important to have a basic grasp of different expressions in order to be successful in math. This essay will explore the ten expressions of math and provide insight into their importance.
The first expression is the sum. This is the answer you get when adding two or more numbers together. For example, if you have the numbers 5, 7, and 8, the sum would be 20. Sums can also be used to find the total amount of a group of objects.
The second expression is the difference. This is the answer you get when subtracting two or more numbers. For example, if you have the numbers 8 and 5, the difference would be 3. Differences can also be used to find the difference between two amounts.
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PLEASE HELP ASAP GIVING 50 POINTS AND BRAINLIEST
Adam is planning a hike and printed two maps of the trail. The length of the trail on the first map is 8 cm. The length of the trail on the second map is 5 cm.
(a) 1 cm on the first map represents 3.5 km on the actual trail. What is the length of the actual trail according to the first map?
(b) A landmark on the first map is a triangle with side lengths of 3 cm, 4 cm, and 6 cm. What is the scale factor from the first map to the second map? What are the side lengths of the landmark on the second map? Show your work.
Answers:
A) 1 cm = 3.5 km
The trail is 8cm long on the map, multiply 8 by 3.5:
8 x 3.5 = 28 km total
B. The first map is 8cm, the second map is 5 cm
The scale factor to change from the 1st map to the 2nd map would be 5/8
Multiply the dimensions on the 1st map by 5/8.
3 cm x 5/8 = 1 7/8 cm
4 cm x 5/8 = 2 1/2 cm
6 cm x 5/8 = 3 3/4 cm
What does the leading coefficient tell you about the graph polynomial?
The leading coefficient of a polynomial is the coefficient of the term with the highest degree. It can tell us a lot about the graph of the polynomial, it can mainly tell us whether the graph is in a downward direction or upward direction.
If the leading coefficient is positive, then the graph will start at the origin and will extend upwards, with the degree of the polynomial determining how steep the graph is. If the leading coefficient is negative, then the graph will start at the origin and extend downwards.
If the leading coefficient is 0, then the graph will be a horizontal line. The leading coefficient can also tell us about the end behavior of the graph. If the degree of the polynomial is even, then the end behavior will be a horizontal line. If the degree of the polynomial is odd, then the end behavior will be a vertical line. Knowing the leading coefficient of a polynomial gives us a basic idea of what the graph of the polynomial will look like.
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could you help me by chance?
Answer:
27.5
This is because you plug the numbers into the equation. Hope this helps!
use an addition or subtraction formula to write the expression as a trigonometric function of one number. cos 13π 15 cos − π 5 − sin 13π 15 sin − π 5
Use an additive or reduction formula to determine an expression as a fractional derivative of one number, which is provided as -1/2.
What do trigonometry's fundamentals entail?The three basic trigonometric operations are sine, cosine, and tangent. Cotangent, radial basis, and cotangent functions are all built on these three fundamental functions. All trigonometry concepts are built on top of these functions. The learning of trigonometry is not really easy until pupils are familiarized with all the terms and formulae. As a result, it is suggested that students learn each of these and practice responding to test questions from prior years.
Briefing:Given expression is:
\($$\cos \left(\frac{13 \pi}{15}\right) \cos \left(\frac{-\pi}{5}\right)-\sin \left(\frac{13 \pi}{15}\right) \cdot \sin \left(\frac{-\pi}{5}\right)$$\)
We have cos A cos B - sin A sin B = cos (A + B)
Here,
A = 13π/15, B = -π/5
\($$\begin{aligned}& =\cos \left(\frac{13 \pi}{15}+\left(\frac{-\pi}{5}\right)\right) \\& =\cos \left(\frac{13 \pi}{15}-\frac{\pi}{5}\right) \\& =\cos \left(\frac{13 \pi-3 \pi}{15}\right)\end{aligned}$$\)
\($$\begin{aligned}& =\cos \left(\frac{10 \pi}{15}\right) \\& =\cos \left(\frac{2 \pi}{3}\right)\end{aligned}$$\)
= cos 120°
cos (90° + 30°)
-sin 30°
= -1/2
\($$\therefore \quad \cos \left(\frac{13 \pi}{15}\right) \cos \left(\frac{-\pi}{5}\right)-\sin \left(\frac{13 \pi}{15}\right) \sin \left(\frac{-\pi}{5}\right)=\frac{-1}{2}$$\)
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What is another name for a dependent samples t-test?Select one:a. Freed sampleb. Paired samplec. Single sampled. Double sample
Another name for a dependent samples t-test is a paired samples t-test. It is a statistical test used to determine if there is a significant difference between two related variables from the same sample.
A dependent samples t-test is a statistical test used to compare the means of two related variables from the same sample. It is used when the two variables being compared are dependent on each other, such as pre- and post-test scores for the same group of individuals or the same group of subjects being measured under different conditions.
The term "paired samples" refers to the fact that each observation in one sample is matched with a corresponding observation in the other sample, creating a pair. The dependent samples t-test is used to determine if the mean difference between the two variables is statistically significant, indicating that there is a significant change between the two related variables.
In conclusion, a dependent samples t-test is also known as a paired samples t-test, which is used to determine if there is a significant difference between two related variables from the same sample. The term "paired samples" refers to the matching of each observation in one sample with a corresponding observation in the other sample, creating a pair.
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If an inscribed angle intercepts the diameter of a circle, what degree measure is the intercepted arc?
The measure is 90°.
Since it intercepts half of the circle.
if we estimate that the mean recurrence interval of earthquakes in the 8.0-9.0 magnitude range in certain area is 1000 years, what is the probability of an earthquake in that magnitude range occurring in the next 30 years?
The probability of an earthquake in that magnitude range occurring in next 30 years is 3%.
The probability that the event will not occur for an exposure time of x years is:
\((1-\frac{1}{MRI} )^{x}\)
where, MRI = Mean Recurrence Interval = 1000
x = Years = 30
Therefore, Probability of not occurring = \((1-\frac{1}{1000} )^{30}\)
= \((\frac{999}{1000} )^{30}\)
= \((0.999)^{30}\)
= 0.97
Probability of occurring = 1 - 0.97
= 0.3
Probability percent = 0.03 * 100
= 3 %
Hence, probability is 3%.
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The diagonal of a tv screen is 26 inches. the base is 18.8 inches wide. how tall is the tv?
the height of the triangle formed by the diagonal and base of the TV screen.
The height of the TV is approximately 15.6 inches.
(26 inches / √2) = 18.8 inches
(18.8 inches * √2) = 26 inches
Height = (26 inches / 18.8 inches) * 18.8 inches
Height = 15.6 inches
Step 1: Calculate the hypotenuse of the triangle formed by the diagonal and base of the TV screen.
Hypotenuse = diagonal / √2
Hypotenuse = 26 inches / √2
Hypotenuse = 18.8 inches
Step 2: Calculate the diagonal of the triangle formed by the hypotenuse and base of the TV screen.
Diagonal = hypotenuse * √2
Diagonal = 18.8 inches * √2
Diagonal = 26 inches
Step 3: Calculate the height of the triangle formed by the diagonal and base of the TV screen.
Height = diagonal / base
Height = 26 inches / 18.8 inches
Height = 15.6 inches
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Rewrite the product as a power: \(x^{7} y^{7}\)
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
\( {x}^{7} {y}^{7} = ({x \times y})^{7} = ({xy})^{7} \)
♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️♥️
Answer: ❤️❤️(x*y) 7
=(xy) 7
Sal is making bracelets for a fundraiser. He uses 6 inches of yarn per bracelet. How many bracelets can Sam make with 5 feet of yarn
To answer this problem, we need to find the number of bracelets Sal can make with 5 feet of yarn given that he uses 6 inches of yarn per bracelet.
Here's how we can solve the problem: There are 12 inches in 1 foot. So, 5 feet is equal to 5 × 12 = 60 inches. Sal uses 6 inches of yarn per bracelet. the number of bracelets he can make with 60 inches of yarn can be calculated as follows :Number of bracelets = Length of yarn ÷ Length used per bracelet= 60 ÷ 6= 10Therefore, Sal can make 10 bracelets with 5 feet of yarn. Note that the length of yarn used and the length of yarn provided are both measured in inches and feet. So, it is necessary to convert them to a common unit. Also, since the question does not ask for a fraction of a bracelet, the final answer has to be a whole number. To summarize, Sal can make 10 bracelets with 5 feet of yarn if he uses 6 inches of yarn per bracelet.
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100,650 greater than 100,557 true or false
Answer:
True.
Step-by-step explanation:
100,650 is 93 digits greater than 100,557.