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4 years ago

Can someone help please, I don't get it and I need to turn it in!! Thank you!

Mathematics

2 answers:

AlexFokin [52]4 years ago

8 0

The snswer is numbet 3 :)

user100 [1]4 years ago

3 0

Number three is the answer :) Hope it helps. Mark as brainliest!

You might be interested in

Write the equation in slope intercept form. what are the slope and y-intercept? -3x - 10y = 7

blondinia [14]

slope intercept is basically solve for y y=mx+b m=slope b=yintercept -3x-10y=7 add 3x to both sides -10y=3x+7 divide both sides by -10

6 0

3 years ago

Emily measures a prize wheel at a carnival and calculates that it has an area of 3.14 square feet. What is the prize wheel's cir

Marizza181 [45]

The circumference of wheel is 6.28 feet.

Step-by-step explanation:

Given,

Area of prize wheel = 3.14 square feet

Area = πr²

$3.14 = 3.14(r)^2$

Dividing both sides by 3.14

$\frac{3.14}{3.14} = \frac{3.14(r)^2}{3.14}\\1=r^2\\r^2=1\\r=1$

Circumference = 2πr

Circumference of prize wheel = $2*3.14*1\\$

Circumference of prize wheel = 6.28 feet

The circumference of wheel is 6.28 feet.

Keywords: area, circumference

Learn more about circumference at:

#LearnwithBrainly

5 0

3 years ago

-4/7 + 2/7x -14x + 4/7

7nadin3 [17]

Answer:

-4/7+4/7=0

2/7x-14x= 13 5/7x

Answer =13 5/7x

7 0

4 years ago

A gear with a diameter of 12.0 inches makes 35 revolutions every three minutes. Find the linear and angular velocities of a poin

alina1380 [7]

Answer:

Angular velocity: $\omega = \frac{7\pi}{18} \,\frac{rad}{s}$ ( $1.222\,\frac{rad}{s}$ )

Linear velocity: $v = \frac{14\pi}{3}\,\frac{m}{s}$ ( $14.661\,\frac{m}{s}$ )

Step-by-step explanation:

The gear experiments a pure rotation with axis passing through its center, the angular ( $\omega$ ), in radians per second, and linear velocities ( $v$ ), in inches per second, of a point on the outer edge of the element are, respectively:

$\omega = \frac{2\pi}{60}\cdot \dot n$ (1)

$v = R\cdot \omega$ (2)

Where:

$\dot n$ - Rotation rate, in revolutions per minute.

$R$ - Radius of the gear, in inches.

If we know that $\dot n = \frac{35}{3}\,\frac{rev}{min}$ and $R = 12\,in$ , then the linear and angular velocities of the gear are, respectively:

$\omega = \frac{2\pi}{60}\cdot \dot n$

$\omega = \frac{7\pi}{18} \,\frac{rad}{s}$ ( $1.222\,\frac{rad}{s}$ )

$v = R\cdot \omega$

$v = \frac{14\pi}{3}\,\frac{m}{s}$ ( $14.661\,\frac{m}{s}$ )

7 0

3 years ago

Sin =9/15 . Find tan 0

ELEN [110]

Answer:

c. 9/12

Step by step explanation.

Given: sin = 9/15

and,

$sin = \frac{opp.}{hyp.}$

$tan = \frac{opp.}{adj.}$

thus, find adj. side

by using Pythagoras theorem

${c }^{2} = {a}^{2} + {b}^{2}$

then,

let adj. side be a^

${a}^{2} = {c}^{2} - {b }^{2} \\ {a}^{2} = {15 }^{2} - {9}^{2} \\ {a}^{2} = 144 \\ a = 12$

thus,

adj. side is 12

then,

tan of the angle = 9/12

3 0

3 years ago