1 year ago

Which of the following BEST describes how to use the addition property of equality to isolate the variable y

Mathematics

1 answer:

Alexandra [31]1 year ago

5 0

Answer: C) add 12 to both sides

Reason:

We add 12 to the left side to undo the -12, which will get y by itself.

We must do the same thing to both sides to keep things balanced.

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Find the product mentally. (2j + 7)(2j - 7)

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4j^2 -14j +14j - 49

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3 years ago

What are the 3 angle measures in the triangle shown below

7nadin3 [17]

9514 1404 393

Answer:

B. 39°, 106°, 43°

Step-by-step explanation:

The sum of angle measures in a triangle is 180°. Then the sum of angle expressions will be 180.

(3x +1) +(11x -4) +(5x -7) = 180

19x -10 = 180 . . . . . collect terms

19x = 190 . . . . . . . . add 10

x = 10 . . . . . . . . . . . divide by 19

Then the three angle measures are ...

3·10 +1 = 31
11·10 -4 = 106
5·10 -7 = 43

The appropriate choice is ...

B. 31°, 106°, 43°

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2 years ago

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B "it's" means (it is) and that would not make sense if it fell on it is side .

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3 years ago

Use formulas to find area

aivan3 [116]

120.08 u just had to multiply

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2 years ago

Read 2 more answers

To the nearest tenth, find the area of a circle with d = 15km. Use 3.14 for . Remember: you must find the radius before you use

AVprozaik [17]

Answer:

radius r = 7.5 km

diameter d = 15 km

circumference C = 47.1238898 km

area A = 176.714587 km2

Step-by-step explanation:

math

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3 years ago