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SVETLANKA909090 [29]
3 years ago
15

Two students, Jack and Remi, were running laps around a track. They ran at constant speeds. Jack ran 2 laps in 6 minutes 10 seco

nds. Remi ran 3 laps in 9 minutes 6 seconds. Who ran faster, Jack or Remi?
Mathematics
1 answer:
arsen [322]3 years ago
4 0

Answer:

Remi (but barely)

Step-by-step explanation:

6 minutes & 30 seconds is 370 seconds total.

Divide that by 2, now you have 185 seconds per lap.

9 minutes & 6 seconds is 546 seconds total.

Divide that by 3, now you have 182 seconds per lap.

Remi's average lap time is 3 seconds faster than Jack's.

Hope this helped. :)

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What is the reduced answer to 4/9 multiples by 4/5 equal
deff fn [24]
First, we know that when multiplying fractions, we multiply both the numerator and denominator.

so, in 4/9 • 4/5,
4•4 = 16, and
9•5 = 45

so, 4/9 • 4/5 = 16/45.
now, we’ll look for the Least Common Factor

factors are numbers that you can multiply together to = another number.
the LEAST common Factor is the # that is smallest that you can divide both numbers by, in an equation and get a whole number.

for instance, 3•3 and 1•9 are the only ways to get 9, so, the factors are 1, 3, 9

let’s look for the LCF in 16 and 45. -
if we find the ways to get 16, we have:
1•16, 2•8, and 4•4
so, the factors are 1, 2, 4, 8, and 16.
this is called FACTORING :)

the ways to get 45 are...
1•45, 3•15, and 5•9, so the FACTORS are
1, 3, 5, 9, 15, & 45.
- compare the factors of 16 & 45,
none of them are the same besides 1, and we know that dividing these numbers by 1 will not do anything.

because of this, we can not reduce 16/45, so the reduced answer to 4/9 • 4/5 = 16/45
4 0
4 years ago
What is one way of writing 10-3?
Grace [21]
Greetings!

"10-3" can also be written as:
1) -3+10
2)10+(-3)

Hope this helps.
-Benjamin


4 0
3 years ago
Read 2 more answers
Peter practices violin for a total of 55 minutes over the weekend he practices for 25 minutes on Saturday how many minutes does
Bess [88]

Answer:

30 minutes.

Step-by-step explanation:

55 - 25 = 30

Hope this helped, have a great day/night!

3 0
3 years ago
Read 2 more answers
Nelson Middle School raised $19,950 on ticket sales for its carnival fundraiser last year at $15 per ticket. If the school sells
Nina [5.8K]

Answer:

C 30600 dollars hope it helps

8 0
3 years ago
Read 2 more answers
Dane is investing $150,000 for 30 years at an annually compounded rate of 5.5%. What is the difference between his ending accoun
navik [9.2K]
<span>Total = Principal × ( 1 + Rate )<span>^years
</span></span><span>Total = 150,000 * (1.055) ^ 30
</span>Total = 150,000 * <span> <span> <span> 4.9839512884
</span></span></span>Total = <span> <span> <span> 747,592.69</span></span></span>

<span>Total = 150,000 * (1.065) ^ 30
</span><span><span><span>Total = 150,000 * 6.614366163 </span> </span> </span>
<span>Total = 992,154.92</span>

Difference = 992,154.92 -<span>747,592.69 =
</span><span>244,562.23 </span>

Source:
http://www.1728.org/compint.htm
online interest calculator



7 0
3 years ago
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