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3 years ago

Find the length of the arc. Round your answer to the nearest tenth?..

Mathematics

2 answers:

Zepler [3.9K]3 years ago

3 0

Answer:

15.7 km

Step-by-step explanation:

First find the circumference around the circle

C = 2*pi*r

C = 2 *3.14 * 10

62.8

Then find the fraction of the circle the arc is

The arc is 90 degrees and the circle is 360 degrees

90/360 = 1/4

Multiply the circumference by the fraction

1/4*62.8 =15.7

IrinaK [193]3 years ago

3 0

Where’s the question

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The area of the right triangle shown is 24 square feet.

Goryan [66]

The equations used to find the length of leg of triangle are:

$0.5x(x+2) = 24\\\\x^2+2x-48=0\\\\x^2+(x+2)^2 = 100$

Solution:

From given,

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Also from given figure in question (attached below )

base = x and height = x + 2

The area of triangle is given by formula:

$Area = \frac{1}{2} \times base \times height$

Substituting the values we get,

$24 = \frac{1}{2} \times x \times (x+2)\\\\24 = 0.5x(x + 2)\\\\48 = x(x+2)\\\\x^2 + 2x - 48 = 0\\\\$

Also, the above equation can be written as,

$x^2 + (x+2)^2 =100$

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4 0

3 years ago

Read 2 more answers

A video game system that normally sells for $249 is on sale 15% off. Which expression can be used to find the amount of the disc

maks197457 [2]

Answer:

D, B and E

Step-by-step explanation:

To find the discount we write it as

Discount=15% of $249

We can write the above as

1)15/100×249(E)

2)0.15×249 (B)

3)3/20×100 (D)

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3 years ago

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