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Hitman42 [59]
3 years ago
10

I really need help again 8th grade math

Mathematics
2 answers:
valina [46]3 years ago
8 0

Answer:

1

Step-by-step explanation:

The picture is too small but I believe the answer is 1.

Marina CMI [18]3 years ago
6 0

Answer:

x = 1

Step-by-step explanation:

First, you need to find out what the measure of the angle is so we add the two angles we know and then subtract that by 180.

64 + 85 = 149

180 - 149 = 31

This means that

4x + 27 = 31

So know we solve for x which results in the answer being

x = 1

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A three inch diameter pulley on an electric motor that runs at 1800
Bezzdna [24]

Answer:

a) 3 inch pulley: 11,309.7 radians/min

6) 6 inch pulley: 5654.7 radians/min

b) 900 RPM (revolutions per minute)

Step-by-step explanation:

Hi!

When a pulley wirh radius R rotantes an angle θ, the arc length travelled by a point on its rim is Rθ.  Then the tangential speed V is related to angular speed  ω as:

V=R\omega

When you connect two pulleys with a belt, if the belt doesn't slip, each point of the belt has the same speed as each point in the rim of both pulleys: Then, both pulleys have the same tangential speed:

\omega_1 R_1 = \omega_2 R_2\\

\omega_2 = \omega_1 \frac{R_1}{R_2} =1800RPM* \frac{3}{6}= 900RPM

We need to convert RPM to radias per minute. One revolution is 2π radians, then:

\omega_1 = 1800*2\pi \frac{radians}{min} = 11,309.7\frac{radians}{min}

\omega_2 = 5654.7 \frac{radians}{min}

The saw rotates with the same angular speed as the 6 inch pulley: 900RPM

3 0
4 years ago
How do I find the slope to this equation ?<br> 2х-Зу = 12
evablogger [386]

Answer:

slope = \frac{2}{3}

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Given

2x - 3y = 12 ( subtract 2x from both sides )

- 3y = - 2x + 12 ( divide all terms by - 3 )

y = \frac{2}{3} x - 4 ← in slope- intercept form

with slope m = \frac{2}{3}

3 0
4 years ago
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Paul has 15% of his gross pay directly deposited into a mutual fund account each month. If $630 is deposited each month, what is
Sloan [31]
15% of gross = 630

0.15 G = 630

Divide each side by 0.15 :

G = 630/0.15 = $4,200
4 0
3 years ago
What is the easiest way to explain how to dilate an object/ shape
Nat2105 [25]
<span><span>


</span>   <span><span>Dilation - of a polygon</span> A transformation in which a polygon is enlarged or reduced by a given factor around a given center point. Try this Adjust the slider on the right to change the scale factor. Drag the center point O. Dilation is where the polygon grows or shrinks but keeps the same overall shape. It's a little like zooming in or out on a camera. In the figure above, the polygon is a rectangle ABCD. As you adjust the slider on the right, the transformed rectangle A'B'C'D gets bigger and smaller, but remains the same shape</span></span>
4 0
3 years ago
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What is the answer to 9% of 65?
garri49 [273]

Answer:

5.85

Step-by-step explanation:

9% of 65 (sorry forgot i was answering this)

3 0
3 years ago
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