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kupik [55]
3 years ago
5

Evaluate the following algebraic expression at x = 3, y = – 7 and simplify your answer.

Mathematics
1 answer:
4vir4ik [10]3 years ago
6 0
10 is the answe because I don’t know I just got 10 use demos
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Based on the graph, what is the dependent variable, the equation relating the two variables, and how far will the dragonfly trav
ivann1987 [24]

Answer:

<h2>The dependent variable is distance, the equation is y = 20x, and the dragonfly will travel 480 miles.</h2>

Step-by-step explanation:

According to the graph, the dependent variable is Distance in miles, because it's on the vertical axis. Additionally, the independent variable is time in hours, because it's on the horizontal axis. However, you always put time as independent, because nothing affects time.

To find the equation, we just need to find the slope, using two points (0,0) and (2,40).

m=\frac{y_{2} -y_{1} }{x_{2} -x_{1} }=\frac{40-0}{2-0}=20

Therefore, the equation is y=20x, which shows a direct proportion between variables.

Now, in 24 hours, it would travel

y=20(24)=480

It would travel 480 miles.

Therefore, the right answer is the second choice.

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3 years ago
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Amy, Dan and mike are competing in a cooking contest they all used different amounts of milk from a container holding 6 gallons
natka813 [3]

Answer: 0.14

Step-by-step explanation:

You had to convert the decimals into percentages move the decimal point two places to the left which makes 14% the answer

4 0
3 years ago
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HELP ME PLEASE I DON’T UNDERSTAND give answers and working please
AnnZ [28]

Calculate the circumference and area of a circle.

To find the circumference, you double the radius and multiply by pi. To find the area, you square the radius and multiply by pi.

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2 years ago
What is the y-intercept of the function f(x) = -3x<br> Ο<br> Ο<br> on who wire on<br> Ο<br> Ο
morpeh [17]

Answer:

see the explanation

Step-by-step explanation:

we know that

The y-intercept is the value of the function when the value of x is equal to zero. Also is called the initial value of the function

I will analyze two cases

Part 1) we have

f(x)=-3x

so

For x=0

substitute

f(0)=-3(0)=0

therefore

The y-intercept is the point (0,0)

Part 2) we have

f(x)=-3^x

so

For x=0

substitute

f(0)=-3^0=-1

therefore

The y-intercept is the point (0,-1)

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4 years ago
Given the diagram, below which statements are true?
Kobotan [32]
Statement 1,2,3 is the answer to this question
4 0
3 years ago
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