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KiRa [710]
3 years ago
11

Help me pls the questions are here

Mathematics
1 answer:
andreyandreev [35.5K]3 years ago
6 0
3x + 7 = -x - 1
3x + 7 + = -1
4x + 7 = -1
4x = -1 - 7
4x = -8
x = -2

1 - 2x + 5 = 4x - 3
-2x + 6 = 4x - 3
6 = 4x - 3 + 2x
6 = 6x - 3
6 + 3 = 6x
9 = 6x
x = 6/9
x = 2/3

i helped you with the first two questions so you can see how you can solve it.

hope this helps, God bless!
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Which square root has a value between 13.8 and 14.5 <br><br> A.190<br> B. 200<br> C. 213<br> D. 220
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5 0
3 years ago
as a fundraiser, the music club sold shirts. They sold a total of 40 shirts. children's shirts cost $13 and adult shirts cost $1
GalinKa [24]

Answer:

17 adult shirts were sold

Step-by-step explanation:

x = adult shirts and y = children shirts

x + y = 40......adult shirts + child shirts = 40 total shirts

17x + 13y = 588...$ 17 for each adult shirt (x) + $ 13 for each child shirt (y) = $ 588

these are the equations we will be using.

now lets rearrange the first one....x + y = 40......x = 40 - y.....now sub 40 - y in for x back into the second equation

17x + 13y = 588

17(40 - y) + 13y = 588

680 - 17y + 13y = 588

-17y + 13y = 588 - 680

-4y = - 92

y = -92/-4

y = 23 <=== so there were 23 child shirts sold

x + y = 40

x + 23 = 40

x = 40 - 23

x = 17 <===== and 17 adult shirts sold

check...

17x + 13y = 588

17(17) + 13(23) = 588

289 + 299 = 588

588 = 588 (correct)

4 0
3 years ago
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