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tatyana61 [14]
3 years ago
12

The distance traveled (d) varies directly as the time (t) of

Mathematics
1 answer:
Helen [10]3 years ago
6 0

Answer:

2.70 hours to travel 180 mi.

Step-by-step explanation:

The distance traveled (d) varies directly as the time (t) of travel, by the following formula:

s = \frac{d}{t}

In which s is the velocity.

It takes 63 min to travel 70 mi.

So i am going to find the velocity in miles per minute

s = \frac{70}{63} = 1.11

how many hours would it take to travel 180 mi?

I am first going to find the time in minutes, then divide by 60 to pass to hours.

s = \frac{d}{t}

st = d

t = \frac{d}{s}

t = \frac{180}{1.11}

t = 162.16

It takes 162.16 minutes = 162.16/60 = 2.70 hours to travel 180 mi.

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Ans: 720

<span>This is equal to the number of different arrangements of three persons from a group of 10 persons </span>

Required number of ways = 10P3 = 720

OR can be solved in this way
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5 0
3 years ago
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Which expressions are equivalent to 12r-5
ANEK [815]

The expression 12r - 5 are equivalent to 6(2r+(-1))+1 and -4(2+(-3r))+3 option (A) and (B) are correct.

<h3>What is an expression?</h3>

It is defined as the combination of constants and variables with mathematical operators.

We have an expression:

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A) 6(2r+(-1))+1

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B) -4(2+(-3r))+3

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Thus, the expression 12r - 5 are equivalent to 6(2r+(-1))+1 and -4(2+(-3r))+3 option (A) and (B) are correct.

Learn more about the expression here:

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5 0
2 years ago
Are these triangles congruent or can't be determined?
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False. THey are congruent
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If 3* = 1 What will be the value of x?​
zvonat [6]

Answer:

X=0

Step-by-step explanation:

It is a law that

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Number( a) shouldn't be zero.

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