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svlad2 [7]
3 years ago
13

Which of the following values of z will result in a true statement when substituted into the given equation?

Mathematics
2 answers:
Kazeer [188]3 years ago
8 0
Z=1 because if we plug it in we get 1/5(3+2(1))-4(1)=-3 and then that goes to 1/5(5)-4 = -3 then 1-4=-3 and that is true
DIA [1.3K]3 years ago
5 0

Answer:

A) z=1

Step-by-step explanation:

1/5(3+2z)-4z=-3

3/5+2/5z-4z=-3

2/5z-20/5z=-3-3/5

-18/5z=-15/5-3/5

-18/5z=-18/5

z=(-18/5)/(-18/5)

z=1

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Answer:

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Step-by-step explanation:

The answer for a

the only items that had sales tax were $3.00 and $0.50. The total tax for the both was $0.21 so you can find what percent 0.21 is of 3.00 + 0.50 o 3.50. Do this by dividing the percent you are looking for, 0.21, by what it is the percent of 3.50. 0.21 / 3.50 = 0.06. then you multiply the number you got, in this case 0.06 by 100 to find the percentage so it is 6%

The answer for b

Here you can just take the subtotal, $13.00, and subtract all the other prices and you will be left with the price of the top. 13.00 - 3.00 - 2.00 - 0.50 = 7.50. So the answer is $7.50

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2 years ago
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<u>Answer:</u>

The correct answer option is: True.

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