MATHEMATICS HIGH SCHOOL

Solve this system of equation solution. y=-x-7 y=-4

Answers

Answer 1
Answer:

Answer:

x=11

Step-by-step explanation:

x-7=4

x-7+7=4+7

x=11

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How do you solve the function y = 2.5^x for y=20 
F(x) = 1 2*-5 g(x) =f(x-3) The graph of g is

Find the slope of the line passing through the points (2,5) and (8,-4).

Answers

Answer:

-9/6

Step-by-step explanation:

y2-y1 , x2-x1

Please help me !! Answer both correctly for a brainliest and also a thanks ! Don't answer if you don't know it .

Answers

1. Exponential
2000 times 2= 4000   (60)
4000 times 2= 8000 (120)
8000 times 2= 16000 (180)
16000 times 2= 32000 (240)
2. pull a 2x out of everything
answer is b
Attached it how i did it!
~Good Luck~!

Rachel can buy licorice sticks for $0.75 and cherry candies for $0.50 and has a budget of $25. If her expenses are represented by the equation 0.75x + 0.5y = 25, where x is the number of licorice sticks and y is the number of cherry candies, how many cherry candies can she buy if she wishes to spend the entire $25 on cherry candies?

Answers

Answer:

She can buy 50 cherry candies if she wishes to spent the entire $25 on cherry candies

Step-by-step explanation:

Cost of each licorice sticks = $0.75

Cost of each cherry candy = $0.50

Total budget = $25

Equation to represent her expenses is 0.75x + 0.5y = 25

where x is the number of licorice sticks and y is the number of cherry candies

Let the number of cherry candies she can buy be c.

So,

Cost of each cherry candy * Number of cherry candies = Total budget

=> 0.50 x c = 25

We get

0.50c = 25

We need to eliminate 0.50 from the left so we divide both sides by 0.50

(0.50c)/(0.50)=(25)/(0.50)

Cancelling out 0.50 from the top and bottom of the left side we get,

c = 50

So, she can buy 50 cherry candies if she wishes to spent the entire $25 on cherry candies.
She will be able to buy 50 candies if she wish to spend her entire 25 dollars on only cherry candies.

Twenty percent of 150 is

Answers

20% of 150 is 30 

Change the percentage into a decimal by dividing it over 100:

20 / 100 = 0.2

Multiply:

0.2 × 150 = 30

Answer: 30

Step-by-step explanation:

Does the table represent an exponential function?|X: 1|2|3|4|
|Y: 4|8|12|16|

-Yes
-no

Answers

Hello,

the table is y=4x is linear not exponential
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A real estate agent is working for a developer who claims that the average commute time to downtown is 20 minutes with a standard deviation of 7 minutes. Stephon is an independent real estate agent and wants to check the times for his client. He took a random sample of 15 commute times and found an average of 26 minutes. He did hypothesis testing using a significance level of 5%. Which conclusion could he make?

Answers

To calculate the z-statistic, we must first calculate the standard error.

Standard error is standard deviation divided by the square root of the population. In this case, it is equal to 1.81.

The z-score is defined the distance from the sample to the population mean in units of standard error.

z = (26 – 20)/1.81 = 3.31

at this z-score = 0.0005 which is less than 5%

 

the answer is C. the z- statistic is 3.32, so the null hypothesis should be rejected.
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