maddie5824 maddie5824
  • 21-11-2019
  • Mathematics
contestada

Mary is five times older than Julian. If the
sum of their ages is 42, how old is Mary?

Respuesta :

bentyfilms
bentyfilms bentyfilms
  • 21-11-2019

Answer:

35

Step-by-step explanation:

M=5J

J=M/5

42=6J

42/6=7

Jullian is 7

7x5=35

Mary is 35

35+7=42

Answer Link
DreamyboatSC
DreamyboatSC DreamyboatSC
  • 21-11-2019

Answer:

Mary is 35.

Step-by-step explanation:

An equation would be 5j + j = 42.

I used substitution by plugging in 7:

5(7) + 7 = 42

35 + 7 = 42

Hope this helps,

♥A.W.E.S.W.A.N.♥

Answer Link

Otras preguntas

By the early 2000s, which country was Taiwan’s third-largest trading partner? A. South Korea B. Japan C. United States D. China
to find the product 3/7x4/9 ,Cameron simplified 3/7 to 1/7 and then multiplied the fractions 1/7 and 4/9 to find the product 4/63. What is Cameron's error?"
Why might a dictatorship hold an election? How was their elections differ from our elections
How Many Enzymes Does A Cell Contain ? And Do They Perform The Same Function ?
factor the polynomial 64x^3-125
to find the product 3/7x4/9 ,Cameron simplified 3/7 to 1/7 and then multiplied the fractions 1/7 and 4/9 to find the product 4/63. What is Cameron's error?"
If the function F(x) represents the number of words that janet can type in x minutes, what is the possible domain for this function?
factor the polynomial 64x^3-125
you buy six notebooks and a backpack. The cost of the backpack is$ 17.90. You pay 6% in sales tax. Your total bill is $30.74 how much does each notebook cost?
Why is the energy transfer in a food web inefficient?