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3 years ago

Number 3 explanation to why the answer is c

Mathematics

1 answer:

Semmy [17]3 years ago

7 0

Number of cars washed by the eight teams per hour = 2 * 8 = 16 cars.
Number of cars washed by the eight teams in 5 = 16 * 5 = 80 cars.

The teams should charge $600/80 = $7.50

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PLSSSS PSL PLS PLS HELP Theresa Morgan, a chemist, has a 30% hydrochloric acid solution and a 55% hydrochloric acid solution. Ho

igomit [66]

Answer:

165 liters of 15% solution

Step-by-step explanation:

15F + 65S = 60(1650)

F + S = 1650

F = 1650-S

15(1650-S) +65S = 99000

50S = 99000-24750= 74250

S = 74250/50 = 7425/5 = 1485 liters of 65% solution

F = 1650-1485 = 165 liters of 15% solution

65 is much closer to 60 than 15 is, so you know there will be mostly 65% solution with relatively little 15%

Hope this helps, have a nice day/night! :D

8 0

3 years ago

2 hundreds equal how many tens? <br><br> Lets see if ya'll know the answer cause i do

tekilochka [14]

Answer:

200 is equal to 20 tens I guess lol

8 0

3 years ago

Read 2 more answers

The time to fly between New York City and Chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 mi

antoniya [11.8K]

Answer:

a) 135 minutes

b) 15

c) 0.5

d) 0.3707

Step-by-step explanation:

A) What is the distribution's mean

mean(m) = (120 + 150)/2 = 270/2 = 135 minutes

B) What is the distribution's standard deviation

standard deviation(s) $= \sqrt{\frac{(120-135)^{2}+(150-135)^{2} }{2} }$

s = 15

C) What is the probability that a flight is less than 135 minutes

firstly calculate z score

z score = (x - m)/s = (135 - 135)/15 = 0

P(x<135) = z(0) = 0.5

D) What is the probability that a flight is more than 140 minutes?

z score = (x - m)/s = (140 - 135)/15 = 0.33

P(x>140) = 1 - P(x<140) = 1 - 0.6293 = 0.3707

8 0

3 years ago

I will give brainliest <br> Thank you (:

bekas [8.4K]

Answer:

non-unifrom

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Least to greatest 0.23 2.30% 1/5

Andrej [43]

2.30% equals 2.30 as a decimal, 1/5 equals 0.2 as a decimal. So it would be: 1/5, 0.23, 2.30

6 0

4 years ago

Read 2 more answers