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Nady [450]
2 years ago
10

Simplify (8z - 10) ÷ (-2) + 5(z - 1). OZ OZ-1 Oz-2

Mathematics
1 answer:
Anon25 [30]2 years ago
3 0

Answer:

A) z

Step-by-step explanation:

(8z - 10) ÷ (-2) + 5(z - 1)

1. Rewrite:

 \large \textsf{$\dfrac{(8x-10)}{-2}+5(z-1)$}

2. Distribute 5

\large \textsf{$5(z-1)$}\\\\\large \textsf{$5(z)+5(-1)$}\\\\\large \textsf{$5z-5$}

Now we have:

\large \textsf{$\dfrac{(8x-10)}{-2}+\large \textsf{$5z-5$}$}

3. Reduce the fraction:

\large \textsf{$\dfrac{(8x-10)}{-2}+\large \textsf{$5z-5$}$}\\\\\large \textsf{$-4x+5+5z-5$}

4. Combine like terms:

\large \textsf{$-4x+5+5z-5$}=\large \textsf{z}

Final answer: z

Hope this helps!

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Find n so that mean of the data set is 140. (120, 145, 130, 80, 95, 100, 340, n)
Varvara68 [4.7K]

Answer:

we know that mean of the data set is

Sum of all terms / total no. of terms

mean = 120+145+130+80+95+100+340+n / 8

140 = 1010+n / 8

140*8 = 1010 + n

1120 = 1010 + n

1120 - 1010 = n

110 = n

therefore the value of n should be 110

hope it's helpful

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2 years ago
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Please help and thank you!
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9514 1404 393

Answer:

  • base area: 21 ft²
  • volume 105 ft³

Step-by-step explanation:

The area of a triangle is given by the formula ...

  A = (1/2)bh

The base and height of a right triangle can be taken to be the leg lengths, since each is perpendicular to the other.

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The volume is the product of the base area and the height:

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What is the answer to this equation?
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So I’ll do question 3. So normally you see f(x)= something plus x (something like that) you see it as a function of x.

So that notation of f(-1) means the function of -1. Which means you need to sub in -1 for x.

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Answer:

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