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defon
3 years ago
15

I need help with this word problem.

Mathematics
1 answer:
zloy xaker [14]3 years ago
4 0

Answer:

33 ⅓%

Step-by-step explanation:

Percent means out of 100, so write a proportion:

1 / 3 = x / 100

Solve for x by multiplying both sides by 100:

x = 100 / 3

Reduce:

x = 33 ⅓

The percent of questions he got right is 33 ⅓%.

You might be interested in
120 adults complete a survey. 45 are men. Write the ratio of men : women in its simplest form
Blababa [14]

Answer: 3:5

Step-by-step explanation: If there are 45 men and 120 adults, that means that the other 75 are females.

45:75

But since the question asked for the simplest form, we have to divide by the GCD, which is 15. (Greatest common divisor)

45÷15:75÷15

3:5

Hope I helped!

3 0
2 years ago
How do I solve this equation?
frosja888 [35]

Answer:

x=-3/11

Step-by-step explanation:

(x+3)/5 +2x=0

Multiply both sides by 5 to get rid of the fraction

5*( x+3)/5 +5*2x=0*5

x+3 + 10x =0

Combine like terms

11x +3 = 0

Subtract 3 from both sides

11x+3-3 =0-3

11x = -3

Divide by 11

11x/11 = -3/11

x = -3/11

4 0
3 years ago
The amount that a bungee cord stretches varies directly with the weight that it holds. If a certain cord is stretched 12 in by a
Y_Kistochka [10]

Answer: 4.5 metres

Step-by-step explanation:

Using Hooke's Law ()

We need to find the spring constant of the bungee cord with the given extension and force, we can do this by substituting in known values.

Now we have found the spring constant of the bungee cord, we can substitute it in for the a different force. As the cord is the same we can use the same spring constant.

6 0
2 years ago
I’m 30 minutes, 40 litres of water runs through a pipe. How much water would run through the pipe in 12 minutes
Rzqust [24]

Answer:

16 liters

Step-by-step explanation:

40 liters ÷ 30 mins = 1.333333... liters

1.3333333... liters x 12 mins = 16

6 0
3 years ago
Read 2 more answers
The distance of planet Mercury from the Sun is approximately 5.8 ⋅ 107 kilometers, and the distance of planet Venus from the Sun
slega [8]

Answer:

5.2

Step-by-step explanation:

distance(Mercury, Sun) = 5.8 x 10^7

distance(Venus, Sun) = 1.1 x 10^8

distance(Venus, Mars) = 1.1 x 10^8 - 5.8 x 10^7

The subtraction is a little easier if you borrow a power of 10 from the 10^8, multiplying 1.1 by 10.

simply subtract 5.8 from 11.0.

This gives us a result of 5.2 x 10^7.

6 0
4 years ago
Read 2 more answers
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