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3 years ago

Which expression can be used to change 75 kilometers per hour to meters per minute?

Mathematics

1 answer:

atroni [7]3 years ago

4 0

$1h=60min\\1km=1000m\\\\\\75\ km/h=75\cdot\frac{1000}{60}\ m/min=1250\ m/min$

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A ball is tossed between three friends. The first toss is 8.6 feet, the second is 5.8 feet, and the third toss is 7.5 feet, whic

algol13

Answer:

The angles are 79.45, 59.02 and 41.53 degrees to the nearest hundredth.

Step-by-step explanation:

We have a triangle with sides of length 8.6, 5.8 and 7.5 feet.

Using the Cosine Rule to find the measure of the angle opposite the side of length 8.6 feet:

cos X = (8.6^2 - 5.8^2 - 7.5^2) / ( -2*5.8*7.5)

= 0.18310

X = 79.45 degrees.

We can now find another angle using the sine rule:

8.6 / sin 79.45 = 7.5/ sin Y

sin Y = (7.5 * sin 79.45) / 8.6

Y = 59.02 degrees

So the third angle = 180 - 79.45 - 59.02

= 41.53 degrees.

3 0

3 years ago

A survey found that 35% of callers complain about the service they receive from a call center. Assume that the events of differe

sasho [114]

Answer:

0.336 or 33.6%

Step-by-step explanation:

It follows from the question that the probability of a complaint is 35% = 35/100 = 0.35. Let's call this probability, p.

The probability of no complaint is mutually exclusive of p since both are complements. Let's call this q. Then

q = 1 - p = 1 - 0.35 = 0.65

The distribution is a binomial distribution.

Events of each call are independent.

The probability of 2 calls with complaint out of 5 is

$\binom{5}{2}p^2 \timesq^3=10\times0.35^2\times0.65^3 = 0.336 = 33.6\%$

6 0

3 years ago

a class survey showed 8 out of 25 students had plans to travel over spring break. how many students out of the 400 students in t

tangare [24]

Traveling : total
8 : 25
x : 400

25 x 4 = 400 so 8 x 4 = 40 so the answer is 40.

5 0

3 years ago

{Can you please help hurry}

Katarina [22]

303-63=240 miles that she can drive

4 0

3 years ago

2 - 4(x + 7) = 3 + 2 (x + 2)

alexgriva [62]

$2 - 4(x + 7) = 3 + 2 (x + 2)\\\\2-4x-28=3+2x+4\\\\6x=-33\\\\x=-\dfrac{33}{6}=-\dfrac{11}{2}$

4 0

3 years ago