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RSB [31]
4 years ago
5

An Olympian swam the 200-meter freestyle at a speed of 1.8 meters per second. An Olympic runner ran the 200-meter dash in 21.3 s

econds. How much faster was the runner’s speed than the swimmer’s speed to the nearest tenth of a meter per second?
A 0.1 meters per second
B 0.4 meters per second
C 7.6 meters per second
D 9.4 meters per second
Mathematics
2 answers:
BlackZzzverrR [31]4 years ago
5 0
Speed = Distance/Time 

Runner Speed = 200/21.3 = 9.4 m/s 

Swimmer Speed = 1.8 m/s 

9.4 - 1.8 = 7.6 m/s 

C
alina1380 [7]4 years ago
5 0

Answer:

C

Step-by-step explanation:

I took the test

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Sloan [31]

Answer:

A= 16 B=28

Step-by-step explanation:

So the ration is 4:7, you have to find multiples that have that same ratio

Multiply both numbers by 4, this should get you

16:28

16 + 28 = 44

Therefore this is the correct answer

5 0
3 years ago
Which statement describes graph
AveGali [126]

Answer:

Step-by-step explanation:

There are no statements here

4 0
3 years ago
An object is launched at 19.6 m/s from a height of 58.8 m. The equation for the height (h) in terms of time (t) is given by h(t)
beks73 [17]
H(t) = Ho +Vot - gt^2/2

Vo = 19.6 m/s
Ho = 58.8 m
g = 9.8 m/s^2

H(t) = 58.8 + 19.6t -9.8t^2/2 = 58.8 + 19.6t - 4.9t^2

Maximun height is at the vertex of the parabole

To find the vertex, first find the roots.

58.8 + 19.6t - 4.9t^2 = 0

Divide by 4.9

12 + 4t - t^2 = 0

Change sign and reorder

t^2 - 4t -12 = 0 

Factor

(t - 6)(t + 2) =0 ==> t = 6 and t = -2.

The vertex is in the mid point between both roots

Find H(t) for: t = [6 - 2]/2 =4/2 = 2

 Find H(t) for t = 2

H(6) = 58.8 + 19.6(2) - 4.9(2)^2 = 78.4

Answer: the maximum height is 78.4 m
5 0
3 years ago
Joe is considering taking out along with the principal of $15,500 From one of two banks. Bank A charges and interest rate of 6%,
ki77a [65]

Answer:

Step-by-step explanation:

We would apply the formula for determining compound interest which is expressed as

A = P(1+r/n)^nt

Where

A = total cost of the loan at the end of t years

r represents the interest rate.

n represents the periodic interval at which it was compounded.

P represents the principal or initial amount taken as loan.

Considering bank A's offer

From the information given,

P = $15500

r = 6% = 6/100 = 0.06

n = 12 because it was compounded 12 times in a year.

t = 8 years

Therefore,

A = 15500(1 + 0.06/12)^12 × 8

A = 15500(1 + 0.005)^96

A = 15500(1.005)^96

A = $25019.2

The interest paid is

25019.2 - 15500 = $9519.2

Considering bank B's offer

From the information given,

P = $15500

r = 6.5% = 6.5/100 = 0.065

n = 12 because it was compounded 12 times in a year.

t = 7 years

Therefore,

A = 15500(1 + 0.065/12)^12 × 7

A = 15500(1 + 0.0054)^84

A = 15500(1.0054)^84

A = $24366

The interest paid is

24366 - 15500 = $8866

The interest that would by paid on bank B's offer is lower than that of bank A and the duration of the loan offer from bank B is shorter than that of bank A.

Therefore,

Bank A gives you more time to pay up the loan and you end up paying more interest

Bank gives you lesser time to pay up the loan and you end up paying lesser interest.

3 0
4 years ago
Lynette wanted to run one mile in eight minutes. To be on pace to reach
natta225 [31]

Answer:

0.25 miles

Step-by-step explanation:

assuming that she keeps a constant Velocity/ speed,

find the speed she intends to run with, ie total distance/time

\frac{1}{8} miles \: per \: minute

find the distance she travels in two minutes, ie speed multiplied by time.

\frac{1}{8}  \times 2 =  \frac{1}{4 }  = 0.25

4 0
3 years ago
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