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natima [27]
3 years ago
11

Starting at the same point, Tom and Juanita go biking in opposite directions. If Tom rides at a speed of 14 mph, and Juanita rid

es at a speed of 20 mph, how far apart will they be in 2 hours?
( Please include explanation, thank you! )
Mathematics
1 answer:
ANTONII [103]3 years ago
7 0

See https://web2.0calc.com/questions/please-help_96053.

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5/6 but if i mulsiply by 4 it gives me whole diff
miskamm [114]

Answer:

3.33 or 3 1/3

Step-by-step explanation:

You're correct to multiply by 4.

Your answer will be 10/3

Just make it a mixed number: 3 1/3

3.33 is 10/3 as a decimal.

4 0
2 years ago
Given that the expression 2x^3 + mx^2 + nx + c leaves the same remainder when divided by x -2 or by x+1 I prove that m+n =-6
Alla [95]

Given:

The expression is:

2x^3+mx^2+nx+c

It leaves the same remainder when divided by x -2 or by x+1.

To prove:

m+n=-6

Solution:

Remainder theorem: If a polynomial P(x) is divided by (x-c), thent he remainder is P(c).

Let the given polynomial is:

P(x)=2x^3+mx^2+nx+c

It leaves the same remainder when divided by x -2 or by x+1. By using remainder theorem, we can say that

P(2)=P(-1)              ...(i)

Substituting x=-1 in the given polynomial.

P(-1)=2(-1)^3+m(-1)^2+n(-1)+c

P(-1)=-2+m-n+c

Substituting x=2 in the given polynomial.

P(2)=2(2)^3+m(2)^2+n(2)+c

P(2)=2(8)+m(4)+2n+c

P(2)=16+4m+2n+c

Now, substitute the values of P(2) and P(-1) in (i), we get

16+4m+2n+c=-2+m-n+c

16+4m+2n+c+2-m+n-c=0

18+3m+3n=0

3m+3n=-18

Divide both sides by 3.

\dfrac{3m+3n}{3}=\dfrac{-18}{3}

m+n=-6

Hence proved.

7 0
3 years ago
If your percentile rank in a group of 500 students is 84, how many persons rank lower than you?
julsineya [31]
If you do 84 x 5 then you have 420 people lower than you 
5 0
3 years ago
Read 2 more answers
BRIANLY FOR THE BEST EXPLANATION AND ANSWER!
Kryger [21]

Answer:

C ≈ 14.18

Step-by-step explanation:

<u><em>Question Given:</em></u>

A circle has an area of 16mm². Find it's circumference.

<u><em>Formula:</em></u>

C = 2√πA

<u><em>Solve:</em></u>

C = 2√πA

C = 2√(3.14 × 16)

C = 2√50.24

C = 14.1760361173

C ≈ 14.18

<em>Hence, Circumference is approximately 14.18.</em>

<em />

<u>~Kavinsky</u>

8 0
2 years ago
Read 2 more answers
gina is training for a marathon she ran 4.6 miles on Friday and 6.7 miles on Saturday on Sunday she ran 13 miles how much furthe
evablogger [386]
4.6 + 6.7 is 11.3 and 13 - 11.3 is 1.7
5 0
4 years ago
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