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qwelly [4]
3 years ago
5

A wheel has a diameter of 21 inches. About how far does it travel if it makes 30 complete revolutions?

Mathematics
1 answer:
Lelu [443]3 years ago
4 0
3 multiplied by 20 is 60

Multiply this by 10 and you get 600

1 Multiplied by 30 is 30

Find the total of the two answers (Which is 630) this is your answers
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Two basketballs are thrown along different paths. Determine if the basketballs’ paths are parallel to each
Paul [167]

Answer:

Since the slopes of the two equations are equivalent, the basketballs' paths are parallel.

Step-by-step explanation:

Remember that:

  • Two lines are parallel if their slopes are equivalent.
  • Two lines are perpendicular if their slopes are negative reciprocals of each other.
  • And two lines are neither if neither of the two cases above apply.

So, let's find the slope of each equation.

The first basketball is modeled by:

\displaystyle 3x+4y=12

We can convert this into slope-intercept form. Subtract 3<em>x</em> from both sides:

4y=-3x+12

And divide both sides by four:

\displaystyle y=-\frac{3}{4}x+3

So, the slope of the first basketball is -3/4.

The second basketball is modeled by:

-6x-8y=24

Again, let's convert this into slope-intercept form. Add 6<em>x</em> to both sides:

-8y=6x+24

And divide both sides by negative eight:

\displaystyle y=-\frac{3}{4}x-3

So, the slope of the second basketball is also -3/4.

Since the slopes of the two equations are equivalent, the basketballs' paths are parallel.

3 0
2 years ago
Thrice a number decreased by 5 exceeds twice the number by a unit find the number
viktelen [127]
Working attached below. Hope this helps! Any questions let me know :)

6 0
2 years ago
Anne pays cash for a Tv. The store owner gives her a 10% discount. She pays $702. How much was the price of the Tv before a disc
Whitepunk [10]

Answer:

$780

Step-by-step explanation:

P = Original Price

P (100% - 10%) = $702

P (90%) = $702

(P (.9)) / .9 = $702 / .9

P = $780

Check answer:

$780 (90%) = $702

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At a restaurant, the waiter brings 6 sub sandwiches for 8 children to share so that everyone gets the same amount. How much can
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3/4 of a sandwich for each sandwich will amount to 6 sandwiches and 8 children can eat
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2 years ago
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Write the following numbers in order of size
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7/10,.72,75%,4/5,.9 hope this helped
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3 years ago
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