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Aneli [31]
3 years ago
7

It took every 55 minutes to run a 10-meter race last weekend. If you know that 1 kilometer equals 0.621 mile, how many minutes d

id it take Everly to run 1 while during the race? Round your answer to the nearest hundredth.
A. 3.41 minutes
B.5.50 minutes
C. 6.21 minutes
D. 8.86
Mathematics
1 answer:
Umnica [9.8K]3 years ago
7 0
Velocity=distance/time
Data:distance=10 Km=10 km*(0.621 miles/1 km)=6.21 miles.time=55 minutes
Velocity=6.21 miles/55 minutes=0.11290909... miles/minute≈0.113 miles/ minute
Data: distance=1 mile.velocity=0.113 miles/minute
time=distance /velocitytime=(1 mile) / (0.113 miles/ minute)=8.85668... minutes≈8.86 minutes. 
Answer: D 8.86 minutes. 


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Solve the compound inequality 6b < 24 or 4b + 12 > 4.
myrzilka [38]
The answer is a. b>-2 because

6b<24
b< 24/6
b<4


And

4b+12>4
4b>4-12
4b>-8
b>-8/4
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3 0
2 years ago
the perimeter of a rectangle is 55 inches. the ratio of the length to width is 7:4. use proportions to find the area of the rect
Leni [432]

Answer:

Step-by-step explanation:

let : x the length and y the width    .... ( x  > y and x ; y reals numbers )

the perimeter is : 2(x+y)

2(x+y) = 55...(1)

x/y = 7/4 ...(2)

by (2) : x = (7/4)y

subsct in (1) : 2( (7/4)y +y ) =55

(7/2)y +2y =55

multiply by 2

7y +4y = 110

11y = 110

y = 10

x = (7/4)(10)

x = 35/2

4 0
3 years ago
If frank has 380 condoms and he uses 180 in two weeks and by the 4th week he has 2 left how many did he use in 2 weeks (btws thi
anastassius [24]

You have said that he used 180 in the first two weeks.

That left him with 200 at the end of the first two weeks.
Then you said that he had 2 left after another 2 weeks.
So during those 2 weeks, he used (200 - 2) = 198 in the 2nd 2 weeks.

What we all expected has not happened at all:  Frank is not slowing down !

But, even so, we have to ask ourselves just what Frank is doing with them all.

Nobody can blame you for wondering.


6 0
3 years ago
Read 2 more answers
1. Adrian invests $10,000 in an account that increases by 8% each year. What is the balance in the account after 15 years?
TEA [102]

Answer:

$162000

Step-by-step explanation:

8% of 10000

10000÷100=100×8=800

10000+800=10800

10800×15=162000

6 0
1 year ago
A rocket is launch from atop a 74 foot cliff with an initial velocity of 113 ft/s the height of the rocket above the ground at t
EleoNora [17]

Answer: We will use the QUADRATIC FORMULA.

x=7.6659375

Step-by-step explanation:

Use the Quadratic formula

a=-16,b=113,c=74

And then use the quadratic formula and you get x=7.6659375

6 0
3 years ago
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