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2 years ago

How many radians is -135°

Mathematics

1 answer:

Yuri [45]2 years ago

6 0

Answer:

-3/4 pi radians

Step-by-step explanation:

180° is 1 pi radian

Hence, -135° = -135/180 pi radians

= -0.75 pi radians

= -3/4 pi radians

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docker41 [41]

Answer:

10.21

Step-by-step explanation:

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2 years ago

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The volume of a CONE-shaped hole is 75pi ft cubed. If the hole is 9 feet deep, what is the radius of the hole?

Arturiano [62]

Answer:

The radius of hole is 5 feet

Step-by-step explanation:

Depth of conical hole = 9 feet

Let the radius of hole be r

Volume of conical hole = $\frac{1}{3} \pi r^2 h$

So, Volume of conical hole = $\frac{1}{3} \pi \times r^2 \times 9$

We are given that volume of a CONE-shaped hole is 75pi ft cubed.

So, $\frac{1}{3} \pi \times r^2 \times 9=75 \pi$

$\frac{1}{3} \times r^2 \times 9=75$

$r^2=\frac{75 \times 3}{9}$

$r=\sqrt{\frac{75 \times 3}{9}}$

r=5

Hence The radius of hole is 5 feet

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2 years ago

Value of (–3/8) × (+8/15). A. 11/15 B. 11/23 C. –1/5 D. –1/3

svet-max [94.6K]

ANSWER

The correct answer is C

EXPLANATION

We want to find the value of

$- \frac{3}{8} \times \frac{8}{15}$

This is the same as:

$- \frac{3}{8} \times \frac{8}{3 \times 5}$

We cancel out the common factors to get:

$- \frac{1}{1} \times \frac{1}{1 \times 5}$

We simplify to get:

$- \frac{1}{5}$

The correct answer is C

5 0

3 years ago

3x+6=15 solve for x x= ?

mylen [45]

Answer: x=3

Step-by-step explanation: Subtract 6 from both sides, Simplify

15−6 to 9, and then divide both sides by three.

3x=15−6

3x=9

x=9/3

x=3

Hope this helps, have a BLESSED day! ☺️

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2 years ago

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91 more than the square root of a number

Genrish500 [490]

Answer:

Step-by-step explanation:

y = x 2 + 91

Explanation:

Let the number be x

, then Square of the number is x ^2

91 more than the square of a number" will be x^ 2 + 91

So, we can write it as an algebraic expression with two variables as :

y = x ^2 + 91

3 0

2 years ago