alanishere94 alanishere94

22-08-2019
Mathematics

contestada

Maggie's brother is 9 years younger than three times her age. The sum of their ages is 43. How old is Maggie?

Respuesta :

calculista calculista

02-09-2019

Answer:

Maggie's age is 13 years

Step-by-step explanation:

Let

x ------> Maggie's brother age

y ------> Maggie's age

we know that

x+y=43 ------ > equation A

x=3y-9 ------> equation B

substitute equation B in equation A and solve for y

(3y-9)+y=43

4y=43+9

4y=52

y=13

therefore

Maggie's age is 13 years

Answer Link

Otras preguntas

Use the mathematical induction to prove that 7^n -1 is divisible by 6 whenever n is a positive integer

Find the sum of (1-1/n) + (1-2/n) + (1 - 3/n)....upto n terms

What is the slope of a line that is perpendicular to the line y = 8x + 5?−8 -1/8 1/8 8

IPv4 address are of how many types?

when a true breeding plant with purple kernels was crossed with a true breeding plant with yellow kernels the f1 cob had kernels that were all purple.a what is

write an equation to find the value of x:

Which of the following circumstances contributed to the decline of the Han dynasty? Select all that apply. establishment of state religion destruction caused by

Find the produce 2 1/3 times 3 1/2

What immediate effect did waves of immigrants have on American cities? A. New foods and activities entered American culture B. City services could not keep up w

what is the correct ionic equation, including all coefficients, charges, and phases for the following sets of reactants? Assume that the contribution of protons