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Harlamova29_29 [7]
4 years ago
15

4(x+15)(x+5) I dont understand how to do this

Mathematics
1 answer:
kogti [31]4 years ago
7 0
Not really sure but hope this works so first you need to multiply the parentheses by 4 then multiply the parentheses again and lastly is collect the like terms answer should be 4x^2+80x+300
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Find the arc length of AB. Round your answer to the nearest hundredth.
Fantom [35]

The arc length of AB is 8 m (app.)

Explanation:

Given that the radius of the circle is 8 m.

The central angle is 60°

We need to determine the arc length of AB

The arc length of AB can be determined using the formula,

arc \ length=\frac{central \ angle}{360^{\circ}} \times circumference

Substituting central angle = 60° and circumference = 2πr in the above formula, we get,

arc \ length=\frac{60^{\circ}}{360^{\circ}} \times 2 \pi(8)

Simplifying the terms, we get,

arc \ length=\frac{8 \pi }{3}

Dividing, we get,

arc \ length=8.37758041

arc \ length=8(app.)

Hence, the arc length is approximately equal to 8.

Therefore, the arc length of AB is 8 m

5 0
4 years ago
Fill in the Blank: 10 quarts =<br> pints
givi [52]

Answer:

10 quarts = 20 pints.

Step-by-step explanation:

Hope my answer has helped you and if not I am sorry.

8 0
3 years ago
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What is the radical form of each of the given expressions? Drag the answer into the box to match each expression.
postnew [5]

4 ^ (1/7 ) is the 7th root of 4 or the 3rd box

4 ^ (7/2) is 4 to the 7th power then the square root  or the 2nd box

7 ^ (1/4) is the 4th root of 7 or the 4th box

7 ^ (1/2) is the square root of 7 or the  6th box

4 0
3 years ago
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Find y and x intercept
Svetlanka [38]
-2x + 3y = 12
x intercept y = 0
-2x = 12
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y intercept x = 0
3y = 12
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answer
y intercept (0,4)
x intercept (-6,0)

3 0
4 years ago
Peggy had three times as many quarters as nickels. She had $1.60 in all. How many nickels and how many quarters did she have?
saul85 [17]

Answer:

<em>3n; 2 nickels and 6 quarters</em>

Step-by-step explanation:

"Peggy had three times as many quarters as nickels."

Whatever number of nickels she has, the number of quarters is 3 times as many.

Since she has n nickels, she has 3 times n quarters.

The number of quarters is 3n.

A nickel is worth $0.05, so n nickels are worth 0.05n.

A quarter is worth $0.25, so 3n quarters are worth 0.25(3n).

0.05n + 0.25(3n) = 1.60

0.05n + 0.75n = 1.6

0.8n = 1.6

n = 2

She has 2 nickels.

3n = 3(2) = 6

She has 6 quarters.

5 0
4 years ago
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