berkeleypipkin berkeleypipkin

17-10-2019
Mathematics

contestada

marks brother is nine years older then mark. their combined ages add up to 33. how old is mark

Respuesta :

hansenbianca589 hansenbianca589

17-10-2019

Answer:

12 yrs old

Step-by-step explanation:

Mark(M)+Brother(B)=33

M=B-9

therefore

(B-9)+B=33

2B-9=33

2B=33+9

2B=42

B=21

21-9=M

M=12

Answer Link

17-10-2019

Answer:

Mark is 12 years old

Step-by-step explanation:

a=brothers age

(9+a)+a=33

(9+12)+12

(21)+12=33

a=12

Mark is 12 years old

Answer Link

Otras preguntas

i need help in algebra gang i pay 30 a month help mee

Can someone help me with this?

What is the food industry’s usual response to pressures to produce safer foods

28. Use the properties of the mean and median to determine which are the correct mean and median for the following histogram. (i) Mean is 3.6; median is 4.8 (i

Lin is walking from his house to the library. When a coordinate grid is laid over a map, his house is at position (0, 0), and the library is at position (3, 5).

Question 1 X Doug surveys 20 randomly selected students in his high school and asks *0/1 how many hours they spent each week at Sun Splash, rounded to the neare

Write the net ionic equation for the precipitation of zinc sulfide from aqueous solution

History vs Columbus What THREE details about Columbus' legacy do the debates disagree on? Select THREE answers. Edpuzzle

In the autonomic nervous system, neurotransmitter activation of its receptor terminates when the neurotransmitter is broken down by enzymes or when it diffuses

what are the feeding strategies with each ocean zone