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
monitta
3 years ago
11

Three siblings- Kate, Sarah, and Dave comitted themselves to volunteer 160 hours for a homeless charity to build new housing. Da

ve worked 15 hours more than Kate. Sarah worked 20 hours fewer than Kate. How many hours did each of these siblings volunteer?
Mathematics
1 answer:
MAXImum [283]3 years ago
4 0

Answer:

Kate 55 hours

Dave 70 hours

Sarah 35 hours

Step-by-step explanation:

Let k be Kate's hours

Dave = 15 + k

Sarah = k- 20

Dave + Kate + Sarah = 160

15 + k + k + k - 20 = 160

3k - 5 = 160

3k = 165

k = 55

Kate worked 55 hours

Dave worked 70 hours

Sarah worked 35 hours

You might be interested in
HELP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
frutty [35]

Answer:

m∠7=34°

Step-by-step explanation:

m∠2=m∠8=146° because alternate interior angles are congruent.

m∠7=180-m∠8=34° because it is a linear pair.

3 0
3 years ago
Read 2 more answers
Help me plzzzzzzzzzz​
Nuetrik [128]
Its maybe this maybe

4 0
3 years ago
Read 2 more answers
7 and 1/5 -2 and 3/5 equal
Furkat [3]
7 1/5 - 2 3/5 = 
36/5 - 13/5 =
23/5 or 4 3/5 <==
6 0
2 years ago
One month, ruby worked for 6 hours more than isaac, and svetlana worked 4 times as many hours as ruby. Together they worked 126
Anastasy [175]

Ruby worked 22 hours

Isaac worked 16 hours

Svetlana worked 88 hours

4 0
3 years ago
Read 2 more answers
Which of these pairs are equal?
AVprozaik [17]

Answer: sin 33° and cos 57°

Step-by-step explanation:

4 0
3 years ago
Other questions:
  • Nia wants the total weight of her luggage to be no more than 50 kilograms. She has
    12·2 answers
  • there are 42 boys and 12 girls who signed up yo participate in the scavenger hun how many different teams can michelle organize
    11·1 answer
  • 5x + 2y = 5 3x - y = 14 Which of the following equations is not a result of solving the system of equations by addition?
    5·1 answer
  • -2/5n = -30<br> What does n=
    5·2 answers
  • Explain why g(x)= {sin π/x if =0, 1 if x=0 , is not continuous a x=0
    6·1 answer
  • Rebecca is 12.5% taller than Debbie. Debbie is 64 inches tall. How tall is Rebecca?
    9·2 answers
  • Find the retail price if original cost is $45 and markup 20%
    5·2 answers
  • Find the value of x.<br><br> WILL GIVE THE BRAINLIEST TO THE BEST ANSWER
    8·2 answers
  • Starasia says “My hair is 40 inches long, give or take 0.2 inches.” What is the percent error of the length of her hair?
    15·1 answer
  • What is the solution to x + 7 = 22?<br> A. x = 14<br> B. x= 7<br> © C. x= 15<br> D. x= 29
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!