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victus00 [196]
3 years ago
11

Min and Jessica collected 60 plastic bottles. They divided the plastic bottles evenly between them and sold the bottles to a rec

ycling center for 10 cents each. Let n represent the amount of money, in cents, that Min and Jessica each earned from the recycling center. Which equation could be used to find the amount of money Min and Jessica each earned? n = 60 × 2 × 10 n = 60 ÷ 2 ÷ 10 n = 60 ÷ 2 × 10 n = 60 × 2 × 10
Mathematics
1 answer:
Vedmedyk [2.9K]3 years ago
6 0

Min and Jessica have 60 they divide them evenly so then you have 60/2.  They made 10 cents for each bottle sold.

So they each earned:

60÷2 x 10

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If you are 600 m from a batter when you see him hit a ball, how long will you wait to hear the sound of the bat hitting the ball
Molodets [167]

Answer:

<em>The speed of sound at 20°C is 343.42 m/s.</em>

<em>You have to wait 1.75 seconds to hear the sound of the bat hitting the ball</em>

Step-by-step explanation:

<u>Speed of Sound</u>

The speed of sound is not constant with temperature. Generally speaking, the greater the temperature, the greater the speed of sound.

The approximate speed of sound in dry air at temperatures T near 0°C is calculated from:

\displaystyle v_{\mathrm {s} }=(331.3+0.606\cdot T )~~~\mathrm {m/s}

The air is at T=20°C, thus the speed of sound is:

\displaystyle v_{\mathrm {s} }=(331.3+0.606\cdot 20 )~~~\mathrm {m/s}

v_{\mathrm {s} }=343.42\ m/s

The speed of sound at 20°C is 343.42 m/s.

To calculate the time to hear the sound after the batter hits the ball, we use the formula of constant speed motion:

\displaystyle v=\frac{d}{t}

Where d is the distance and t is the time. Solving for t:

\displaystyle t=\frac{d}{v}

Substituting the values v=343.42 m/s and d=600 m:

\displaystyle t=\frac{600}{343.42}

t = 1.75 s

You have to wait 1.75 seconds to hear the sound of the bat hitting the ball

6 0
3 years ago
Of the 800 participants in a marathon 220 are running to raise money for a cause. How many participants out of 100 are running f
nadezda [96]

Answer:

27.5 /100 are running for a cause

Step-by-step explanation:

We know that 220/800 are running for a cause

Divide the top and bottom by 8 to get the fraction out of 100

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800/8 = 100

27.5 /100 are running for a cause

7 0
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Answer:

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Step-by-step explanation:

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How does changing the value of m affect the graph of an equation in the form y=mx b?
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M represents the slope of a line, changing the slope to positive will make it an incline and changing it to negative will make it a decline. If the slope is a fraction, the smaller the numerator, the steeper the line, the larger the numerator, the less steep the line is.
8 0
3 years ago
Read 2 more answers
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Effectus [21]

Answer:

Step-by-step explanation:

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that means

Area = 5.25^2

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3 years ago
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