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-Dominant- [34]
3 years ago
9

Write a real-world problem for 7.50y+9. PLZ HURRY!!!

Mathematics
1 answer:
prisoha [69]3 years ago
8 0

Answer:

You are going to school in a week and you are out to get school supplies. You need a backpack and it costs 9 dollars. Each pack of mechanical pencils cost $7.50. How much do you spend if you buy "y" packs of pencils?

Step-by-step explanation:

9 is initial fee (y-intercept) and 7.50 is the slope.

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If y varies inversely as x2 and y = 3 when x = 2, find the equation that connects x and y.
Bond [772]
<h3>Answer:  y = 12/(x^2)</h3>

============================================================

Explanation:

"y varies inversely as x^2" means y = k/(x^2) for some constant k.

Plug in (x,y) = (2,3) and solve for k

y = k/(x^2)

3 = k/(2^2)

3 = k/4

3*4 = k

12 = k

k = 12

The original equation updates to y = 12/(x^2)

As a check, plugging in x = 2 should lead to y = 3

y = 12/(x^2)

y = 12/(2^2)

y = 12/4

y = 3 ... we get the proper y value, so the answer is confirmed.

3 0
3 years ago
How can you tell that the inequality 3t+1&gt; 3t + 2
lutik1710 [3]

Answer:

see below

Step-by-step explanation:

3t+1> 3t + 2

Subtract 3t from each side

1>2

This is never true so there is no solution

Since the variable terms are the same, we only have to look at the constants

6 0
2 years ago
Which equation represents the line through (4, 5) and (0, 3)?
morpeh [17]

Answer:

I dont know what options you have but all these are possible answers

y - 5 = 1/2 ( x - 4 )

y - 3 = 1/2 x

y = 1/2 x + 3

Step-by-step explanation:

In order to find the equation you need a slope, so you find the slope of both points by using the slope equstion

y2 - y1 / x2 - x1

and you would get :

\frac{1}{2}

now you plug it into the point slope formula  which is y - y = m ( x - x )

and you choose one of the two sets of points that they provided in the question but you'll get the same answer either way.

4 0
2 years ago
A fence is 692 m long. It is cut into three parts. Two parts are the same length, and the third part is 26 m longer than either
xenn [34]
One is 222
Two is 222
Three is 248
7 0
3 years ago
The measure of an angle is 34 degrees. What is the measure of the supplementary angle.
prohojiy [21]

Answer:

<em>146</em>

Step-by-step explanation:

Supllementary angles add up to 180 degrees.

<em>180-34 = 146</em>

7 0
2 years ago
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