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Aneli [31]
2 years ago
13

tom run cross country. he runs 5 miles in 35 minutes. he runs 20 miles in 140 minutes if he keeps the same pace how long will it

take him to run 15 miles?
Mathematics
2 answers:
SSSSS [86.1K]2 years ago
5 0

Answer:

105 Minutes

Step-by-step explanation:

Important Info:

5 Miles = 35 Minutes

20 Miles = 140 Minutes

Question to answer:

15 Miles = [ ? ]

Explanation/Solution:

Since 35/5=7 and 140/20 = 7

So 15 x 7 = 105

Hence, the answer is 105 Minutes.

Note: Velocity = Distance/Time and Time = Distance/Velocity

OleMash [197]2 years ago
3 0

Answer:

105

Step-by-step explanation:

5 ÷ 35 = 7

140 ÷ 20 = 7

15 · 7 = 105

I hope this helps!

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Four more than the product of three and a number x.
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Answer:

3x +4

Step-by-step explanation:

4 more= 4+

the product of 3 and x = 3 times x

=

4+ 3x

3 0
3 years ago
Read 2 more answers
A salesperson earns $450.20 per week plus 15% of her weekly sales. Which of the following describes the sales necessary for the
lapo4ka [179]
First we must construct an equation to model the problem. (In this case we will use an inequality instead) This is what I came up with:
         450.20+0.15s>=600.10

This equation shows how if her base earnings ($450.20) are added to 15% of her sales, represented by s, then the total will be greater than or equal to $600.10
Next, we simply solve for s. (steps shown below)

1) 450.20+0.15s>=600.10 (simply restating the inequality)
2) 0.15s>=149.90 (here I isolated the variable)
3)0.15s/0.15>=149.90/0.15 (Finally I solve for s by dividing both sides by 0.15, this will isolate s on the left and leave the answer on the right)
4) s>=999.33... (here I found the total sales the salesperson would need to reach his/her goal of earning a minimum of $600.10; the 3's after the decimal are repeating so in the next step I will round up to the nearest hundredth (b/c this is what money is rounded to and if I round down he/she would make less than her goal. This means i must round up.))
5) s>=999.34 (simple rounding; once again I rounded up b/c rounding down would slightly bring the total earnings to less than the goal)

<u>Therefore, the salesperson would need his/her sales to be $999.34 in order for his/her total earnings for the week to be at least $600.10</u> (greater than or equal to $600.10)

<u>Hope this helped!</u>
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4 years ago
300,000 cm is how many km? 3 km 30 km 300 km 3,000 km
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300,000cm is equals to 3km
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Answer: 40

Step-by-step explanation:

Since 40 could be = 1 x 40, 2 x 20, 4 x 10, or 5 x 8.

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The Prime factor then is: 2, 2, 2, 5

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