Explain how you know whether to add or subtract when you use the Distributive Property to multiply

Mathematics

1 answer:

swat323 years ago

4 0

If one of the numbers you are multiplying by is negative,then that answer will be negative.

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The formula for the area of a square is A = sa, where s is the length of a side.

Sliva [168]

Answer:

$\sqrt{400} = 20$

Step-by-step explanation:

Since the sides of a square are equal, A = s x s so taking the square root of the square provides the length of each side

6 0

2 years ago

17-1.2+ show me how you get the answer 15.8

SashulF [63]

First do 17 - 1 to get 16. Then subtract 0.2 from 16.0 to get 15.8.

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4 years ago

Use the Law of Sines to find the missing angle of the triangle. Find m<b to the nearest tenth.

defon

1. By the Law of Sines, you have:

SinA/a=SinB/b=SinC/c

2. You don't need the fraction SinC/c, so you can eliminate it. Then:

SinA/a=SinB/b

A=40°
a=19
B=m∠b
b=13

3. When you substitute this values into SinA/a=SinB/b, you obtain:

SinA/a=SinB/b
Sin(40°)/19=SinB/13
SinB=13xSin(40°)/19
m∠b=SinB^-1(13xSin(40°)/19)
m∠b=26.1°

Therefore, the answer is: 26.1 degrees.

6 0

3 years ago

Problem in image. Explain it too.

alexandr1967 [171]

$\sqrt{40} = 6.32\\\\\\or\\5\sqrt{15} \\\\$

this is because when 40 is broken down into two numbers (one divisible to get out of the square root, and one not) you get 25 + 15 under the square root. we know that the square root of 25 is 5, so we can put 5 outside the root and leave 15 inside.

-------------- try the next problem, and if you don't understand, please reply back.

answer is for a) $5\sqrt{15}$

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3 years ago

Find the Midpoint of the segment with the following endpoints (2,10) and (8,4)

Alex_Xolod [135]

Answer:

midpoint = (5,7)

Step-by-step explanation:

Use the midpoint equations. x1 + x2 / 2 and y1 + y2 / 2

2 + 8 = 10/2 = 5

10 + 4 = 14/2 = 7

4 0

3 years ago

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