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alexandr402 [8]

3 years ago

14

How are adding and subtracting rational expressions different from multiplying

1 answer:

Strike441 [17]3 years ago

3 0

Answer:

If the two rational expressions that you want to add or subtract have the same denominator you just add/subtract the numerators which each other. When the denominators are not the same in all expressions that you want to add or subtract as in the example below you have to find a common denominator.

Step-by-step explanation:

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Justin drew a scale drawing of a community college. The

melisa1 [442]

Answer:

36 centimeters

Step-by-step explanation:

always start with the bigger number first then divide 72 ÷ 2 = 36 then divide 72 ÷ 36 = 2 then the actual building will be 36

5 0

2 years ago

What is the area of the triangle?<br> umi<br> bosi<br> 4<br> par<br> 2<br> con<br> units

Svetradugi [14.3K]

Answer:

A = 4 units ^2

Step-by-step explanation:

The area of a triangle is

A = 1/2 bh where b is the length of the base and h is the height

A = 1/2 ( 4) (2)

A = 4 units ^2

4 0

2 years ago

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Suppose Q and R are independent events. Find P(Q and R) if P(Q) = 0.63 and P(R) = 0.48.

Oksanka [162]

Hello,

Q and R are independent if p(Q and R)=p(Q)*p(R)
Here p(Q and R)=0.63-0.48=0.3024
ANSWER B

5 0

2 years ago

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Find the measure of the exterior angle 1. with one angle is 50 degrees and 28 degrees

OLga [1]

Answer:

D. 78°

Step-by-step explanation:

50°+28°= 78°

_______

3 0

2 years ago

The volume of a CONE-shaped hole is 75pi ft cubed. If the hole is 9 feet deep, what is the radius of the hole?

Arturiano [62]

Answer:

The radius of hole is 5 feet

Step-by-step explanation:

Depth of conical hole = 9 feet

Let the radius of hole be r

Volume of conical hole = $\frac{1}{3} \pi r^2 h$

So, Volume of conical hole = $\frac{1}{3} \pi \times r^2 \times 9$

We are given that volume of a CONE-shaped hole is 75pi ft cubed.

So, $\frac{1}{3} \pi \times r^2 \times 9=75 \pi$

$\frac{1}{3} \times r^2 \times 9=75$

$r^2=\frac{75 \times 3}{9}$

$r=\sqrt{\frac{75 \times 3}{9}}$

r=5

Hence The radius of hole is 5 feet

6 0

2 years ago