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scoundrel [369]
2 years ago
10

A car’s speed before a sudden stop can be estimated by the formula

Mathematics
1 answer:
Veseljchak [2.6K]2 years ago
6 0

Answer:

S = 30 mph

Step-by-step explanation:

A car’s speed before a sudden stop can be estimated by the formula :

S=\sqrt{30gk}

Here,

S = speed of the car in mph,

g = drag factor, and

k = length of skid mark in feet

If drag factor is 1, k = 30 feet

So,

S=\sqrt{30\times 1\times 30}\\\\S=30\ mph

Therefore, the correct option is (a) 30 mph.

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In a group of 60 students, 20%are girls. How many are boys?
Firlakuza [10]

Answer: About 12 of those 60 students are boys.

To find the percent, you'll convert 20% to a decimal.

20 / 100 = 0.2

Then, multiply 60 by 0.2

0.2 × 20 = 12

That's one way, another way is:

Convert 20% to a fraction.

20% = 1/5

Then multiply 60 by 1/5.

60 × 1/5 = 60/5

Lastly, divide 60 by 5

60 / 5 = 12.

Hence, 12 is the answer.

<em>Any questions? Comment down.</em>

4 0
3 years ago
Find the mean of the following data set. 42, 45, 58, 63 42 47 52
ohaa [14]

Answer:

d

Step-by-step explanation:

6 0
3 years ago
Mr. Ortega is buying a ham. He wants to divide it into 6-ounce servings for 12 people. Write and solve a division equation to fi
galben [10]

Answer:

division equation  

x/6 = 12

The size he should buy = 72 ounces

Step-by-step explanation:

Mr Ortega bought a ham. He wants to divide it into 6 ounce serving for 12 people . The division equation to find what size of ham Mr Ortega should buy is represented below.

Mr Ortega wants to share for each person 6 ounce serving for 12 people.

Let the amount of ounce he will buy = x ounces

Therefore, the division equation to find what size of hams Mr Ortega should buy will be

x/6 = 12

To find x we cross multiply

x = 12 × 6

x = 72 ounces

8 0
3 years ago
Find the base <br>90% of what number is 27?​
DanielleElmas [232]

Answer:

30 is the total number..p

5 0
3 years ago
Can you solve d-3/5=6 before multiplying by 5 reasoning yes or no and why?
Luda [366]

Answer:

yes you can

apart from getting rid of the denominator you can collect like terms

Step-by-step explanation:

d=6-3/5

6=30/5

30/5-3/5

27/5

d=27/5

5 0
3 years ago
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