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otez555 [7]
3 years ago
7

PLEASE ANSWER ASASP!!!!!!!!!!!!!!1

Mathematics
2 answers:
Arturiano [62]3 years ago
5 0

Answer:

12.5 km/hr

Step-by-step explanation:

If he runs 15km in 72minutes,

15km/72min = .208333 km per minute

there are 60 minutes in a hour

.208333 km/min * 60min/hr = 12.5 km/hr

Anastaziya [24]3 years ago
4 0

Answer:

12.5 km/hr

Step-by-step explanation:

An hour is 60 minutes.

So 15km/72min = x km/60min

15*60 = 72*x

x = 12.5

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Can some one really help me please!!!! :(((
GREYUIT [131]

Answer:

for the first on its a=24 and for the second its a= 48

Step-by-step explanation:

for the first one you have to find the length which is 8 and then you find the width which is 3 then you multiply that to get 24

for the second one you find the base which is the strait line which is 8 then you find the height which is 6 then you multiply it to get 48 i hopes this helped!

7 0
2 years ago
Which expression can be used to find measure angle R
Novay_Z [31]

Answer:

cos-1(-4/14)

Step-by-step explanation:

If

4.5=r

3.5=s

2=t

By law of cosines:

r^{2}=s^{2}+t^{2}  -2st cosR\\\\CosR= \frac{r^{2} -s^{2} -t^{2} }{-2st}  \\\\R=cos^{-1} (\frac{(4.5)^{2}-3.5^{2} -2^{2}  }{-2(3.5)(2)} )\\R= cos^{-1} (-\frac{4}{14}  )

4 0
2 years ago
PLEASE HELP ASAP!!!!!!!!!!!!!!!
Dmitrij [34]
It would be the one with the number that is furthest away from 0 either negative or positive.  in this case it would be A
6 0
3 years ago
Read 2 more answers
Use unit rate to find the unknown value: 2/8 = 7/? <br> 1. 56<br> 2. 4<br> 3. 28<br> 4. 24
bezimeni [28]

Answer:

I believe the awnser is 3

4 0
2 years ago
Polynomials are closed under the operation of addition. Which statement best explains the meaning of closure of polynomials unde
spayn [35]
Answer: The correct answer is the second choice: "When any two polynomials are added, the result is always a polynomial."

When a set of numbers is "closed" under an operation, it means that the resulting output answer is the same type as the input.

For example, if you add  2x + 9 and 3x + 12, you get 5x + 21.

You started with 2 polynomials and you ended with a polynomial.
7 0
3 years ago
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