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3 years ago

What happens when there is another sign in front of an integer? Ex: +(-3)

Mathematics

2 answers:

Setler [38]3 years ago

4 0

-3 is the answer !!!!

Paraphin [41]3 years ago

3 0

Answer:

-3

Step-by-step explanation:

To add integers with different signs, keep the sign of the number with the largest absolute value and subtract the smallest absolute value from the largest. Subtract an integer by adding its opposite.

-From Khan Academy-

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CAN SO ONE PLS HELP ME whats (2-3x4)9+22

Nuetrik [128]

Answer:

The answer is = 112

Step-by-step explanation:

3x4 = 12

12 - 2 = 10

10 x 9 = 90 .,. when there is a ) next to a number you multiply

90 + 22 = 112

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2 years ago

The length of a rectangle is 12 cm more than its width. Find the

just olya [345]

Dimensions of the rectangle (width and length) are 19 cm and 31 cm respectively.

Step-by-step explanation:

Step 1: Given that the perimeter = 100 cm, let width be x cm and then length = 12 + x.

Perimeter of a rectangle = 2(length + width)

100 = 2(x + 12 + x)

100 = 4x + 24

4x = 100 - 24 = 76

∴ x = 76/4 = 19 cm

∴ Length = 19 + 12 = 31 cm

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3 years ago

The picture shows a barn door:

Hitman42 [59]

Answer:

(D)9 divided by sin 60 degrees

Step-by-step explanation:

From the given figure, using trigonometry

$\frac{BC}{AB}=sin60^{{\circ}}$

Substituting the given values, we get

$\frac{9}{AB}=sin60^{{\circ}}$

$\frac{9}{sin60^{\circ}}=AB$

$AB=\frac{9{\times}2}{\sqrt{3}}$

$AB=\frac{18}{\sqrt{3}}$

$AB=10.4 feet$

Thus, The length of the support AB is 9 divided by sin 60 degrees.

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