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S_A_V [24]
2 years ago
9

Evaluate the expression 10x - 4y if x = -2 and y = 1.

Mathematics
1 answer:
lyudmila [28]2 years ago
6 0

For this just simply substitute the values with the corresponding variable.

10(-2)-4(1)

-20-4

-24 is your answer for the expression

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Victor is working on a project and has cut a number of wooden blocks of equal size that are represented by this right rectangula
insens350 [35]

Answer:

  (a)  156 cm²

Step-by-step explanation:

The total surface area of the 12 blocks can be computed by first finding the surface area of one block. That result can then be multiplied by 12. The area of one rectangular prism is given by the formula ...

  A = 2(LW +H(L +W))

  A = 2(4·1 +1/2(4+1)) = 2(4 +5/2) = 13 . . . cm²

The area of 12 such prisms will be ...

  12 × (13 cm²) = 156 cm²

Victor needs 156 cm² of fabric to cover 12 blocks.

_____

<em>Additional comment</em>

This problem offers an opportunity to exercise your number sense. The area of the largest surface of one block is (4 cm)×(1 cm) = 4 cm². 12 of these surfaces will have an area of 48 cm². This is only part of the total area, so the only reasonable choice among those offered is 156 cm².

6 0
2 years ago
PLS HELP ME!! THIS IS URGENT!!!
meriva

Answer:

no b is the correct answer

4 0
3 years ago
Read 2 more answers
What is the sign of the product (-5)(-3)(-8)(-6)? (5 points)
Alexxx [7]

Answer:

750

Step-by-step explanation:

brainliest please

3 0
3 years ago
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A supervisor finds the mean number of miles that the employees in a department live from work. he finds x overbar = 29 and s = 3
V125BC [204]

A supervisor finds the mean number of miles that the employees in a department live from work is 24. Then the correct option is B.

<h3>What is a z-score?</h3>

The z-score is a numerical measurement used in statistics of the value's relationship to the mean of a group of values, measured in terms of standards from the mean.

The z-score is given as

z = \dfrac{x-\mu }{s}\\

x = 29

s = 3.6

z = 1.5

Then the mean will be

1.5 = \dfrac{29 - \mu }{3.6}\\\\\mu = 29 - 5.4\\\\\mu = 23.6 \approx 24

More about the z-score link is given below.

brainly.com/question/15016913

7 0
2 years ago
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Giving brainliest!!!!!!!! For help
joja [24]

Answer:

zach's

Step-by-step explanation:

because he has the most participants in his survey.

8 0
3 years ago
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