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2 years ago

Need Help Bro Tryna hurry up and this over with lol

Mathematics

1 answer:

Anettt [7]2 years ago

7 0

9514 1404 393

Answer:

62.8 inches

Step-by-step explanation:

Put the given numbers in the formula and do the arithmetic.

C = 2πr

C = 2(3.14)(10 in) = 62.8 in

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1. Add or subtract. Show your work for each problem.

Aleks04 [339]

Hi there!

a. 8x^2 - 1
(x^2 - 4x + 5) + (7x^2 + 4x - 6)
= x^2 + 7x^2 - 4x + 4x - 1
= 8x^2 - 1

b. 5x^2 + 7x - 7
(7x^2 + 4x - 6) - (2x^2 - 3x + 1)
= 7x^2 + 4x - 6 - 2x^2 + 3x - 1
= 7x^2 - 2x^2 + 4x + 3x - 6 - 1
= 5x^2 + 7x -7

Hope this helps!

4 0

3 years ago

How to justify each step in the solution of 5x+15=0

velikii [3]

Answer:

Step-by-step explanation:

The given equation is:

5x+15 =0

Subtract 15 from both sides:

5x+15-15= 0-15

By solving the like terms we get:

5x=-15

Divide both sides by 5

5x/5 = -15/5

Simplify:

x= -3...

8 0

3 years ago

Write a proportion and solve.

ehidna [41]

Set up a proportion: (1/4)/6 = 32/x
Cross multiplying, we have (1/4)x = 192
x = (4)(192) = 768 miles

4 0

2 years ago

please i have been stuck on thos math problem for 123 minutes ago please help please I'm stressing out please I urgently need he

alisha [4.7K]

Answer:

it could be 1. c 2. a 3. d 4. b

or it could be the answers i did for last time in the pic: (that is my old account that got banned)

but i think the answers that are right are the ones i did rn of 1. c 2. a 3. d 4. b

8 0

3 years ago

Find the area of the regular polygon. Round to the nearest tenth.

JulsSmile [24]

Answer:

$110.9\ ft^{2}$

Step-by-step explanation:

we know that

If the triangle of the figure is a regular polygon

then

Is an equilateral triangle

Remember that

The equilateral triangle has three equal sides and three equal interior angles

The measure of each interior angle is 60 degrees

To find the area of the equilateral triangle apply the law of sines

$A=\frac{1}{2} b^{2}sin(60\°)$

we have that

$b=16\ ft$

substitute

$A=\frac{1}{2} (16^{2})sin(60\°)=110.9\ ft^{2}$

8 0

3 years ago