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
charle [14.2K]
3 years ago
15

Mac's age is 3 years less than twice Joe's age. The sum of their ages is 30. Find their ages.

Mathematics
1 answer:
k0ka [10]3 years ago
4 0

Answer:

Mac is 19 years old, Joe is 11 years old

Step-by-step explanation:

2J - 3 = M

J + M = 30

M = 30 - J

2J - 3 = 30 - J

3J = 33

J = 11

M = 30 - 11

M = 19

You might be interested in
If y varies directly as x and y = 42 when x = 6, find the equation that gives the relationship between x and y.
Troyanec [42]

Answer:

B

Step-by-step explanation:

since K is constant ( the same for every point) we can find k when given any point by dividing the y-coordinate by the x-coordinate.

6 0
2 years ago
A construction worker earns 2880 in 6 days. If he earns 8640 in a month, for how
V125BC [204]

Step-by-step explanation:

2880x3=8640

6x3=18

he worked 18 days.

6 0
2 years ago
HELP PLEASE I NEED IT ASAP IT WILL MEAN A LOT TO ME!! PLEASE
adoni [48]

Answer:

1: x=3\sqrt{8+y^{2} } and the same, but its -3 instead of 3

2: x=9-3y

5 0
2 years ago
Read 2 more answers
What is the solution of y − 4x = 0 and 3x + 6y = 9?
Elden [556K]
You solve this by plugging one equation into the other. Usually you have to rewrite one equation to make this work. In this case I choose to rewrite y-4x=0 as y=4x.

After plugging it into the second, you get:

3x + 6*4x = 9 => 27x = 9 => x=1/3

Putting this solution back into y=4x gives us y=4/3
4 0
3 years ago
Y=2x-5<br> 3x+8y+32=56 <br> What does y and x equal?
AVprozaik [17]
Y = 2x - 5
3x + 8y + 32 = 56
3x + 8(2x - 5) + 32 = 56
3x + 8(2x) - 8(5) + 32 = 56
3x + 16x - 40 + 32 = 56
19x - 8 = 56
<u>      + 8   + 8</u>
     <u>19x</u> = <u>64</u>
      19     19
         x = 3.4
y = 2(3.4) - 5
y = 6.8 - 5
y = 1.8
(x, y) = (3.4, 1.8)
5 0
2 years ago
Other questions:
  • Mo has some red and green sweets He eats 1/3 of the sweets ¾ of the sweets left over are green Mo buys himself 30 more green swe
    7·1 answer
  • The rarest form of dichromatism is _____.?
    11·1 answer
  • How many solutions to the equation 8x=58?
    9·1 answer
  • A rectangle has an area of 14 square centimeters. It's length is five cm greater than its width. Find the dimensions.
    14·1 answer
  • If k = 23 and m<br> -14, what is ✓k + m?<br> Submit
    12·1 answer
  • 989.5 rounded to the nearest whole number
    7·1 answer
  • 4 2/5 divided by 3 1/7 euals plz give mixed number answer ty
    12·1 answer
  • What are the center and radius of the circle described by the equation x2 + y2 + 6x + 10y + 18 = 0?
    7·1 answer
  • Solve 4,500 ÷ 9 = ___ using mental math.
    13·2 answers
  • Evaluate. (w^2/x -3) ÷10 × z when w= -4, x = 0.8, and z = -4/5 Enter your answer as a simplified mixed number in the box.​
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!