4 years ago

How do you find y with numbers 8 12 7 and 6?

Mathematics

1 answer:

Karolina [17]4 years ago

7 0

Whats the equation?

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The radius of a circle is 8 miles. What is the length of a 90° arc?

Nookie1986 [14]

Answer:

12.56 miles

Step-by-step explanation:

$l = \frac{ \theta}{360 \degree} \times 2\pi \: r \\ \\ = \frac{ 90 \degree}{360 \degree} \times 2 \times 3.14 \times 8 \\ \\ = \frac{ 1}{4} \times 16 \times 3.14 \\ \\ = 4 \times 3.14 \\ = 12.56 \: miles$

Hence, length of arc = 12.56 miles

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3 years ago

The difference of a number n and 1 squared is 25

ANTONII [103]

Answer:

Step-by-step explanation:

6-1=5

5 x 5= 25

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4 years ago

1. What characterizes an extreme environment?/

joja [24]

Answer: An extreme environment is a habitat characterized by harsh environmental conditions, beyond the optimal range for the development of humans, for example, pH 2 or 11, -20*C or 113*C, saturating salt concentrations, high radiation, 200 bars of pressure, among others.

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4 years ago

John is w years old. His sister is 16 years old and his brother is twice johns age all three siblings have a total age of 31

Kisachek [45]

Answer:

Step-by-step explanation:

John's age = w

His brother's age = 2*w = 2w

His sister's age = 16 years

Total age of all siblings = 31

w + 16 + 2w = 31

w + 2w + 16 = 31

Combine like terms

3w + 16 = 31

Subtract 16 from both sides

3w = 31 - 16

3w = 15

w = 15/3

w = 5

$\boxed{\text{John's age = 5 years }}$

His brother's age = 2w

= 2*5

= 10

$\boxed{\text{John's brother's age = 10 years}}$

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3 years ago

The slpoe of a line is 2/3 what is the slope of a line that is perpendicular to this line

vodomira [7]

Answer:

the slope that is perpendicular to this line is -3/2

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3 years ago