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maksim [4K]
3 years ago
10

For the expression 15-15z to have a negative​ value, what must be true about the value of ​z?

Mathematics
1 answer:
lyudmila [28]3 years ago
7 0

Answer:

C. The value of z has to be greater than 1

Step-by-step explanation:

15 - 15z < 0 \\  - 15z <  - 15 \\ 15z > 15 \\ z  > 1

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Name Date 34bral Kuta Software - Infinite Algebra 2 Solving Absolute Value Equations Solve each equation. 1) 13x1=9 2) 1-3r1=9 R
vichka [17]
-5|3+4k|=-115

start by dividing both sided by -5

\frac{-5}{-5}|3+4k|=-\frac{115}{-5}|3+4k|=23

when we have an absolute we obtain two equations, one for the positive value and one for the negative value

\begin{gathered} 3+4k=23 \\ -(3+4k)=23 \end{gathered}

solve each of them

\begin{gathered} 3+4k=23 \\ 4k=23-3 \\ 4k=20 \\ k=\frac{20}{4}=5 \end{gathered}

for the second equation

\begin{gathered} -(3+4k)=23 \\ -3-4k=23 \\ -4k=23+3 \\ -4k=26 \\ k=-\frac{26}{4}=-6.5 \end{gathered}

the solutions for k are -6.5 and 5

4 0
1 year ago
I need help with this problem 2(w+7)+6(3w−1)
Lubov Fominskaja [6]

Use distributive property: a(b + c) = ab + ac.

2(w + 7) + 6(3w - 1) = (2)(w) + (2)(7) + (6)(3w) + (6)(-1)

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<em>combine like terms</em>

= (2w + 18w) + (14 - 6) = 20w + 8

<h3>Answer: 2(w + 7) + 6(3w - 1) = 20w + 8</h3>
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Answer:

The fabric needs 196.4 ft²

Step-by-step explanation:

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Note:

If you find the area of the triangle by the rule 1/2 × base × height

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Two answer very closed

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