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zlopas [31]
3 years ago
15

How do I set this up to solve as a linear equation?

Mathematics
1 answer:
NISA [10]3 years ago
4 0
I don't see any numbers to set up in an equation or letters
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A collector has 100 movie posters and 80 band posters. She wants to sell 20 movie posters but still have her poster collection m
Andrew [12]
100:80=5/4
100-20:?=5/4 or 80:?=5/4
80/5=16
16*4=64
80:64

80-64=16
16 band posters.
5 0
3 years ago
Pls help my test is timed!! Which of the following scatterplots would have a trend line with a negative slope?
swat32

the first/upper one

the other point cloud is too compact to leave a clear clue about any slope

8 0
2 years ago
6x+2y=18 solve for y
Alchen [17]
6x + 2y = 18
2y = -6x + 18
y = -3x + 9
3 0
3 years ago
Read 2 more answers
100 points<br> (algebra one)<br> describe and correct the error in comparing the graphs
Pepsi [2]

Answer:

The error made is that the graph of y=x^{2} +3 is a vertical translation up by 3, instead of down.

Step-by-step explanation:

Exponential functions, when they are graphed, use the function f(x)=a(x-h)^{2} +k.

In the equation, k expresses how much the graph shifts vertically. In this case, the function shifts vertically up by 3 from the parent function, y=x^{2}. So, the translation is actually 3 units up compared to the graph of y=x^{2}.

Hope this helps and have an amazing day!! ❤

3 0
2 years ago
A rectangle has a length of 12 yards less than 3 times its width. If the area of the rectangle is 135 square yards, find the len
Aleonysh [2.5K]

Answer:

The length is 15 yards

Step-by-step explanation:

Given

Represent the width with W and length with L: So

Area = 135yd^2

L=3W - 12

Required

Determine the length of the rectangle:

Area is calculated as thus:

Area = L * W

Substitute 3W - 12 for L and 135 for Area

135= (3W - 12) * W

135= 3W^2 - 12W

Reorder:

3W^2 - 12W - 135= 0

Divide through by 3

W^2 - 4W - 45 = 0

Expand:

W^2  - 9W + 5W - 45 = 0

W(W  - 9) + 5(W - 9) = 0

(W + 5)(W-9) = 0

W + 5 = 0 or W - 9 = 0

W = -5 or W = 9

But width can't be negative

So:

W = 9

Recall that: L=3W - 12

L = 3 * 9 - 12

L = 15

<em>Hence, the length 15 yards</em>

4 0
3 years ago
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