tpriytwid4ianaFelto tpriytwid4ianaFelto

07-03-2017
Mathematics

contestada

A certain number is subtracted from 20. the result multiplied by 3 is equal to 45. what is the number?

Respuesta :

erinjanelle erinjanelle

07-03-2017

the correct number is 15

Answer Link

H1a2r3s4h5 H1a2r3s4h5

07-03-2017

Let the number is x
so 20-x=20-x
now 3×(20-x)=45
60-3x=45
-3x=45-60
-3x=-15
x=-15/-3
x=5
So the required number is5

Answer Link

Otras preguntas

list and describe two engineering achievement of the Romans? pls help

Samantha is painting the outside shape of a rectangular prism. It’s length is 18 centimeters, it’s width is 6 centimeters, and its height is 3 centimeters. What

Which statements are examples of contemporary conservative beliefs? CHECK ALL THAT APPLY 1- Government should not have a large role in the economy. 2- Tax rate

What two similarities exist between the attitudes toward the role of governmental leaders in Zanj and ancient china?

estimate the number of hot dogs sold by rounding each number in the table to the nearest thousand and finding the sum

What does the speaker ask of the west wind in section iv?

Which of the following is a solution to the inequality y > –2x + 6? a.(4, 4) b.(0, 0) c.(1, 1) d.(2, 2)

If 54 J of heat is added to an aluminum can with a mass of 25.1 g , what is its temperature change? Specific heat capacity of aluminum is 0.903 J/ g ∘ C

How do you turn 1/2 into a decimal

The perimeter is 30in. If the length is three times the width what is the dimensions

good job