2 years ago

Write an equation and solve: Twice a number, increased by 3 is 7.

2 answers:

8 0

The unknown number canbe replaced with x. So twice a number is 2x and in creased by 3 is +3. so the equation would be 2x + 3= 7 and the unknow number, or x, is 2. 2 times two is 4 plus 3 = 7

ipn [44]2 years ago

7 0

2x+3=7
2x=4
x=2
The answer is A) 2

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2 years ago

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RUDIKE [14]

Answer:

7.855 inches

Step-by-step explanation:

The formula to find the length of an arc is :

Arc Length = $\frac{\theta}{360}$ × 2 π r

Here,

Θ ⇒ size of the angle ⇒ 30°

r ⇒ radius ⇒ 15 inches

<u>Let us solve it now.</u>

Arc length = $\frac{\theta}{360}$ × 2 π r

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Arc length = $\frac{30*2*\pi*15}{360}$

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