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
Svetradugi [14.3K]
2 years ago
10

A and B are friends and their ages differ by 4 years, A being the elder. A's father D, is twice as old as A, and B is twice as o

ld as his sister C. The age of D and and C differ by 38 years. Find the ages of A and B.​
Mathematics
1 answer:
Marina CMI [18]2 years ago
6 0

Answer:

Step-by-step explanation:

A = B+4

D = 2A

B = 2C

D-C =  38

2A - B/2 = 38

2(B+4) - B/2 = 38

4B+16 - B = 79

3B = 63

B = 21

A = B+4 = 25

You might be interested in
Solve for s.<br> 0.5s +1= 7+ 4.58<br> S =?
Lana71 [14]

Answer:

s = 21.16

Step-by-step explanation:

0.5s +1= 7+ 4.58

Combine like terms

0.5s +1=11.58

Subtract 1 from each side

0.5s +1-1= 11.58-1

.5s = 10.58

Multiply by 2

.5s *2 = 10.58*2

s = 21.16

4 0
2 years ago
Read 2 more answers
4. What is the volume of the pyramid?<br> 7 ft<br> 9 ft<br> 10 ft
xz_007 [3.2K]
Pyramids and cones have volumes which are one third of their matching cuboids and cylinders.

The volume of this pyramid = (7 x 9 x 10)/3 = 630 / 3 = 210 cu ft
8 0
3 years ago
Who do you solve y= -5/2x-7
Serhud [2]

Answer:

To solve the equation y = -5/2x - 7, we can first multiply both sides of the equation by 2x + 7, which is the denominator of the fraction on the right-hand side. This gives us the equation 2xy + 7y = -5, which we can rearrange to isolate the variable y on one side of the equation. Dividing both sides of the equation by 2x + 7, we get y = -5 / (2x + 7). This is the solution to the original equation.

Step-by-step explanation:

4 0
11 months ago
Read 2 more answers
As part of a new fitness plan, Sabir walks on a treadmill at the same speed for 15 minuets every morning. The table shows the ca
Reil [10]
The relationship between Sabir and calories he burns can be modeled using a linear function given by:
y=ax+b
where
a=slope
b=y-intercept
from the graph, the slope will be given as follows:
taking points (3,15) and (12,60)
a=(60-15)/(12-3)=5 calories/minute
thus using the slope and a point (3,15) the equation will be:
a(x1-x)=(y1-y)
plugging the values we obtain:
5(x-3)=y-15
5x-15=y-15
thus
y=5x
thus the equation is:
y=5x
7 0
3 years ago
Which statement regarding the number of solutions for the linear equation shown below is true?
beks73 [17]
No Solutions. hope it helped
6 0
3 years ago
Read 2 more answers
Other questions:
  • The quotient of ninety five and a number is what
    12·1 answer
  • Please help with this fraction work!!!
    10·2 answers
  • PLS help simple math properties ASAP needing 5 and 6 that’s all :)
    10·1 answer
  • Multiply (2x+5)(4x^2-2x+3)
    12·1 answer
  • Find the amount in the account.
    7·1 answer
  • The exponential function g, represented in the table, can be written as g(x)=a times b^x x g, left parenthesis, x, right parenth
    5·2 answers
  • A map has a scale of 2 inches : 25 miles. Chandra uses the map to find the distance from the zoo to her house. The distance on t
    6·1 answer
  • A grid shows the positions of a subway stop and your house. The subway stop is located at (0,-1), and your house is located at (
    9·1 answer
  • Question 6
    7·1 answer
  • In a class test of 15 questions, (+4) marks are given for every correct answer, (– 2) marks are
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!