1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
yuradex [85]
3 years ago
11

The sum of Mary and Al's age is 48. Twelve years ago, Mary was twice as old as Al.

Mathematics
1 answer:
QveST [7]3 years ago
8 0
Let us denote the years of Mary with M and the years that Al have with A.
<span>We know that the sum of Mary and Al's age is 48. So, we can write:
M+A=48 (1)
</span><span>We also know that twelve years ago, Mary was twice as old as Al. So we can write:
M-12=2*A (2)
From the first equation (1): M=48-A
Let put this in the second equation:
48-A-12=2A
36=3A
A=12
M=48-12=36
</span>
You might be interested in
Find the length of x 10/15=x/20
gayaneshka [121]

I think 40/3 is the answer you’re looking for.

4 0
3 years ago
(5x^4y^3)^2 Simplify
Allisa [31]

This simplifies to 25x^8 16y^6.

You square everything in this probelm to get rid of the parentheses.

7 0
3 years ago
Read 2 more answers
During a stretch of 5 games, Stephen Curry averaged 42 points per game. In his first 4 games he scored 45, 48, 32, and 40 points
makkiz [27]
First, I will add up the know amount of points Chef Curry scored
45 + 48 + 32 + 40 = 165
To find the mean, add up all the numbers and divide that by how many values you had
I know 210 / 5 = 42, so I will subtract:
210 - 165 = 45
Cheer Curry scored 45 points
Brainliest?
:3
7 0
4 years ago
Read 2 more answers
: figure below, find the exact value of z.
ss7ja [257]
See photo for solution

7 0
3 years ago
in a toy store the ratio of the number of dolls to the number of teddy bears 6:5if the number of dolls are 24 what is the number
ELEN [110]
6:5 to 24:20 
thats because 6 to 24 is 4 times so you do 5 times 4 and get 20.
4 0
3 years ago
Read 2 more answers
Other questions:
  • Last week Missy read for a total of 240 minutes during this time she read 112 pages at this rate how many pages did she read in
    13·1 answer
  • Explain how an estimate help you to place the decimal point when multiplying 3.9x5.3?
    11·1 answer
  • 1 a-2a-{3a-(4a-5)} i need help plz and on this one to<br> 13(5-t)-(5-t)-12(5-t)
    14·1 answer
  • 20 POINTS AND WILL MARK BRAINLIEST
    8·2 answers
  • A clothing store spends $10 for each shirt it produces and has fixed costs of $400. If the store makes 50 shirts, how much shoul
    14·1 answer
  • | 3.4 The school government consists of six to eight
    7·1 answer
  • URGENT PLEASE HELP!!!! GIVING BRAINLIEST!! If you answer this correctly ill answer some of your questions you have posted! (33pt
    7·1 answer
  • A(n) _____ is any side of a polygon that shares a side with only one angle of a pair of angles.
    6·2 answers
  • A cyclist rides his bike at a rate of 18 miles per hour. What is this rate in kilometers per hour? How many kilometers will the
    5·2 answers
  • Express using algebra A stick l feet long is broken into 2 parts one of which is twice as long as the other. How long is the sho
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!