Can someone please help me out asap? thank you
2 answers:
AnswerA,B,C
Step-by-step explanation:
A is right , using the exponet property, it turns into to the 7 power which equal x to the 1.4 th power. Using the product of power,
to the 7th power is the same as 1/5 times 7 which equal 1.4. so b is right .Using the fractioal exponet rule C is also right as 5th root of x to the 7th power is the same as to the 7 power divided by 5 which 1.4 so c is right
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Answer:
4 mph
Step-by-step explanation:
The average speed of an object is given by the total distance covered by the time taken:
where
d is the total distance covered
t is the time taken
in the first part, the person runs for 0.4 hours at a speed of 7 mph, so the distance covered in the 1st part is
Then the distance covered in the second part is , so the total distance is
(1)
The total time elapsed is 0.4 hours (first part) + 0.8 hours (second part), so
So we can write the average speed as
(1)
We want the average speed to be 5 mph,
v = 5 mph
Therefore we can rearrange eq.(1) to find d2:
And therefore, the speed in the second part must be
Answer:
a)
b)
c), Yes;
Step-by-step explanation:
Michael's Weight:
Al's weight:
a) Ratio of Michael's weight to Al's weight:
b) This ratio simplifies to:
c) Yes, If the exponent in each expression were negative, then we have:
Ratio of Michael's weight to Al's weight:
This ratio simplifies to:
The two ratios are not the same.