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mestny [16]
3 years ago
15

The formula for (a-b)^2 is a^2-2ab+b^2.

Mathematics
1 answer:
photoshop1234 [79]3 years ago
8 0
Don't forget negative x negative = positive and negative + negative is still negative

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Help with question on Complementary and Supplementary Angles
stiks02 [169]

Step-by-step explanation:

Right angle = 90°

(x + 3) + (x - 1) + (x + 1) = 90

3x + 3 = 90, x = 29.

Supplementary angles = Angles that add up to 180°.

x + (x + 104) = 180

2x = 76, x = 38.

8 0
3 years ago
Can you please explain how you got the answer? Also plz tell me what the closed and open circle mean again..
ale4655 [162]

Answer: A

Step-by-step explanation:

  • Open circle means that x does not equal that number. For example, the open circle on C is on 8, so that shows x is not equal to 8.
  • Closed circle means that x does equal that number. For example on A, there is a closed circle on 8, so x could equal 8.

First, we need to solve the equation.

  1. Subtract 200 frim 1200 -> 125x ≥ 1000.
  2. Divide 125 from 1000 to isolate the x -> x ≥ 8

So, that means x is bigger than or equal to 8.

8 0
3 years ago
Read 2 more answers
For the following right triangle, find the side length. Round your answer to the nearest hundredth
IRINA_888 [86]

Answer:9.75

Step-by-step explanation:12x12 =144 and 7x7= 49 subtract 144-49 and get 95 the square root of 95 is approximately 9.747 rounded to the nearest hundredths place is 9.75

4 0
3 years ago
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The area of the square hole is 8 square centimeters. The volume of a cube shaped block is 64 cubic centimeters. Which edge lengt
damaskus [11]

<u> case a)</u> The area of the square hole is 8 square centimeters

we know that

the area of a square is equal to

A=b^{2}

where

b is the length side of the square

in this problem we have

A=8\ cm^{2}

<u>Find the length side b</u>

b^{2} = 8 \\b= \sqrt{8} \ cm\\b= 2\sqrt{2} \ cm

<u>the answer Part a) is</u>

the length side of the square is 2\sqrt{2} \ cm

Part b) The volume of a cube shaped block is 64 cubic centimeters

we know that

the volume of a cube is equal to

V=b^{3}

where

b is the length side of the cube

in this problem we have

V=64\ cm^{3}

<u>Find the length side b</u>

b^{3} = 64 \\b= \sqrt[3]{64} \\b= 4\ cm

therefore

<u>the answer Part b) is</u>

the length side of the cube is 4\ cm

5 0
3 years ago
Solve the inequality 2c/3 + 1 &gt; 7
svp [43]

Answer:

c > 9

Step by Step explanation

6 0
2 years ago
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