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fiasKO [112]
3 years ago
13

Write an equation for the following word problem: "the difference of twice a number and 3 is -21"

Mathematics
1 answer:
murzikaleks [220]3 years ago
4 0

Answer:

-9

Step-by-step explanation:

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What is the degree measure of an arc 4 pie ft long in a circle of radius 10 ft
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Answer:

ow do you find arc length without the radius?

To calculate arc length without radius, you need the central angle and the sector area:

Multiply the area by 2 and divide the result by the central angle in radians.

Find the square root of this division.

Multiply this root by the central angle again to get the arc length.

The units will be the square root of the sector area angle.

Check your result with Omni Calculator.

Or the central angle and the chord length:

Divide the central angle in radians by 2 and perform the sin function on it.

Divide the chord length by double the result of step 1. This gives you the radius.

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Step-by-step explanation:

7 0
3 years ago
Find the area + perimeter of the following triangle​
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Answer:

Perimeter = 14\sqrt{2}

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Step-by-step explanation:

4 0
3 years ago
I need help with #3 plz
Nadusha1986 [10]
The correct answer is A. 10 bracelets

5 0
3 years ago
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Which number is between 0.5 and 5/8<br><br> A) 1/4<br><br> B) 8/28<br><br> C) 9/16<br><br> D) 19/28
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I think a but not sure but i hope i helped :D
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3 years ago
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write a word problem that can be solved using a system of two linear equations. solve the problem and give the meaning of the an
dmitriy555 [2]

Answer:

The sum of two numbers is 25. One of the numbers exceeds the other by 9. Find numbers

<h3>here</h3>

the other number = x + 9

Let the number be x. 

Sum of two numbers = 25

According to question, x + x + 9 = 25

⇒ 2x + 9 = 25

⇒ 2x = 25 - 9

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⇒ x = 8

Therefore, x + 9 = 8 + 9 = 17

Therefore, the two numbers are 8 and 17.

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