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Crazy boy [7]
2 years ago
9

Please help me with this

Mathematics
1 answer:
hoa [83]2 years ago
7 0

Answer:  31 < x < 33

Step-by-step explanation:

It is possible to calculate the value of x using the equation

3x - 9 = 87

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(2x + 7y = -24<br>18x+y=12 solve by substitution​
const2013 [10]

Answer:

x = .87, or when approximated to a fraction, 27/31

y = -3.67, or when approximated to a fraction, -1287/350

Step-by-step explanation:

Lets start by rewriting out our equations

2x + 7y = -24

18x + y = 12

Lets solve for a y value; the second equation is easiest, as the y value has no coefficient (the number that is multiplied times a variable). To do this, lets move the 18x to the other side. Now our two equations look like:

2x + 7y = -24

y = -18x + 12

Next, lets plus the second equation into the first equation in regards to y.

2x + 7(-18x + 12) = -24

Now, lets solve!

2x -126x + 84 = -24

Then, combine your terms!

-124x = -108

Divide by (-124)!

x = -108/-124

x = 27/31

Now that we know x, lets plug this back in to the first equation to find y!

2(27/31) + 7y = -24

1.74 + 7y = -24

7y = -25.74

y = -3.67, or when approximated to a fraction, -1287/350

4 0
3 years ago
PLEASE HELP ME ANSWER THIS QUESTION! QUICK POINTS!!!
Svetllana [295]

Step-by-step explanation:

2.5<x<8.0???????????

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Answer:

30GB trust me I will not let you fail

Step-by-step explanation:

120/4 = 30gb

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Need help plz i show me how to do it plz :)
DaniilM [7]
I’m pretty sure you multiply the sides your you find the formulas for the hight and width
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Figure 1 is dilated to make fig 2
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Answer:

Depening in the scale factor

Step-by-step explanation:

Figure 1 can be dilated into a bigger version that forms figure 2 or a smaller version

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