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
Ksju [112]
3 years ago
8

Alan is 5 years older than Bob. Bob is twice as old as Cindy. All their ages add up to 20. What are their ages?

Mathematics
1 answer:
Llana [10]3 years ago
6 0
We can use a variable equation to solve this. Let A represent alan's age, B represent bob's age, and C represent Cindy's age. So Bob's age would be Alan's age - 5, or a -5 = B. Then Bob's age would be double Cindy's age, so that means 2 multiplied by Cindy's age = Bob's age, or 2C = B. Your two equations are: 

A - 5 = B
2C = B

Also a third equation that helps is A + B + C = 20.

Finally, here are the ages. 
Alan = 11 years old
Bob = 6 years old
Cindy = 3 years old.

PS: Sorry, I'm not that good at explaining things, but here are the answers
You might be interested in
Which polynomial lists the powers in descending order? A. –10 + 4x3 – 4x5 + 2x4 + x7 B. x7 – 4x5 + 2x4 + 4x3 – 10 C. x7 + 4x3 +
Artist 52 [7]
The answer for the exercise shown above is the option  B, which is: x^{7} -4 x^{5} +2 x^{4} +4 x^{3}- 10
 
The explanation is shown below:
 To list the powers of the polynomial given in the problem above in descending order, you must write the terms from the highest degree to the lowest degree. You have that the highest degree is 7
 and the lowest degree is 0
(Because -10 x^{0} =-10(1)=-10. Therefore, you have that the correct option is the option B.
4 0
3 years ago
Two forces of 19.8 pounds and 36.5 pounds act on a body with an angle of 61.4 degrees between them.
murzikaleks [220]
<h2>ANSWER:</h2><h2>49.2 </h2>

Based on your question Two forces of 19.8 pounds and 36.5 pounds act on a body with an angle of 61.4 degrees between them.

After setting up the vectors on the plane and doing the required math

The answer is 49.2 pounds

<h2 />
4 0
2 years ago
Read 2 more answers
A pile of sand has been stored in the shape of a cone. Mr. Terwilliker knows that the pile is 20 feet tall and 102 feet in circu
xenn [34]

Answer:

The area of tarpaulin is 1315.63 ft^2.  

Step-by-step explanation:

height, h = 20 feet

circumference, C = 102 feet

Let the radius is r.

Circumference, C = 2 x 3.14 x r = 102

r = 16.24 feet

Let the slant height is L.

L = \sqrt{h^2 + r^2}\\\\L = \sqrt{20^2 + 16.24^2}\\\\L = 25.8 ft

The curved surface area is

S = 3.14 x r x L

S = 3.14 x 16.24 x 25.8 = 1315.63 ft^2

4 0
3 years ago
Question:<br> 7x^2 + 8x = x^2
7nadin3 [17]

Answer:

x1= -4/3 and x2= 0

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Mr. Peate is building a rectangular fence around his house. The fence will be 32 feet long and 29 feet wide. What will be the pe
kupik [55]

Answer:

112

Step-by-step explanation:

32*2+29*2=112

8 0
3 years ago
Other questions:
  • Please help with this
    12·1 answer
  • Simplify the expression -6(10+9v)
    8·1 answer
  • 8s in 5,188 what is the answer
    9·1 answer
  • Sandrena and her freinds bought frozen yogurt for 55 cents per onuce. Thier todal was $10.4 5. How many ounces did they buy
    10·1 answer
  • Describe how estimating would help you check if your answer is reasonable for problem 4.​
    10·2 answers
  • Phil wants to buy more than two hot dogs at the city fair. There are three hot dog stands, and each is offering a different deal
    11·2 answers
  • Which equation in slope-intercept form is equivalent to y+2 = -2(x+4)?
    8·2 answers
  • What is the solution to the equation log(2x + 4) = 2? Round to the nearest thousandth, if necessary.
    7·1 answer
  • Limitation of -4 to the left of the absolute value of x+4 divided by x+4
    15·1 answer
  • I need help w the answer
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!