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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A rectangle’s base is 6 cm longer than its height. The rectangle’s area is 135 cm2. Find this rectangle’s dimensions. You must i

il63 [147K]

Area of a rectangle = length x height

Area = 135

Height = X

Lenght = x +6

135 = x * x+6

Simplify:

135 = x^2 +6x

Subtract 135 from both sides:

x^2 + 6x - 135 = 0

Solve:

2 numbers when added need to equal 6 and when multiplied equal -135

x = 9 and x = -15

The height can't be a negative number so the height is 9

Length = 9 +6 = 15

Height = 9cm, Length = 15 cm

6 0

3 years ago

Can someone do 4, 5, 7 and 8 im failing math and avoiding a whooping

Valentin [98]

The answer to five is 75

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2 years ago

2. Write the mixed number -5(4/9) as a fraction in three different ways. Thenwrite the mixed number as a decimal.

emmasim [6.3K]

Fraction #1

$-5\frac{4}{9}$

Fraction #2

$-\frac{49}{9}$

Fraction #3

$-4\frac{13}{9}$

Fraction #4

$-3\frac{22}{9}$

Decimal:

$-5\frac{4}{9}\approx5.4444$

Answer:

$-5\frac{4}{9}$

$-\frac{49}{9}$

$-4\frac{13}{9}$

Decimal: 5.4444

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1 year ago

Mr. Weiler has 32 students in his class he wishes to place them into 8 groups of equal size. Which of the following represents t

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option 4: 4

8x4=32

hope it helps

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