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
RoseWind [281]
2 years ago
9

2. All of the girls in Danielle’s cabin at camp are the same age. Their counselor is 3 times their age. Danielle’s age and her c

ounselor’s ages add up to 28. Write and solve an equation that can be used to find the ages of Danielle and her counsel
Mathematics
1 answer:
Aloiza [94]2 years ago
4 0

Answer:

Danielle is 7 and her counselor is 21

Step-by-step explanation:

Let x be the age of Danielle and y be the age of her counselor then:

y=3x

x+y=28

We can solve this using substitution. In this case, substitute 3x for y since y=3x...

x+3x=28

   4x=28

Divide both sides by 4 (division property of equality)

x=7

y=3x=3(7)=21

Danielle is 7 and her counselor is 21

You might be interested in
Please help me please
Norma-Jean [14]
Im blind SKDJFJNEDKODNANSRNFIS
3 0
3 years ago
Read 2 more answers
Chose the equation that has solutions (5,7) and (8,13)
KIM [24]
The last one .........
7 0
3 years ago
Which expression represent the approximate length of BC HEEEEELLLLPPP!!!
Bumek [7]

Answer:

A

Step-by-step explanation:

Using the Sine rule in Δ ABC

\frac{sinA}{BC} = \frac{sin38}{AB} , substitute values

\frac{sin66}{BC} = \frac{sin38}{3} ( cross- multiply )

BC sin38° = 3 sin66° ( divide both sides by sin38° )

BC = \frac{3sin66}{sin38} → A

5 0
3 years ago
Solve the quadratic equation by completing the square.<br> =+x^2+16x +61=0
Vlad1618 [11]
X^2 + 16x + 61 = 0
x^2 + 16x = -61
x^2 + 16x + 64 = -61 + 64
(x + 8)^2 = 3
x + 8 = (+-) sqrt 3
x = -8 (+-) sqrt 3

x = -8 + sqrt 3...and x = -8 - sqrt 3 <== ur solutions

3 0
3 years ago
The table shows the age of the swimmes on Dions swims team. Find the mean age of the swimmers om the team?
PilotLPTM [1.2K]
Hello!

If we want to find the mean (average) of any set of numbers, all you need to do is add the set together, then divide by how many numbers are in the set.

When we add all the numbers we get: 100

Next we just divide by the number of people which is 10: 100 divided by 10 is 10

So, the mean age of the swimmers on the team is an even number of 10.










3 0
3 years ago
Other questions:
  • How can you use the values of a, b, and c to write a quadratic function in vertex form?
    15·1 answer
  • F(x)=-3x+1 , find:
    7·2 answers
  • I will give brainliest<br> 100=2(5x+3+2)<br> show work please
    14·1 answer
  • How are the partial products 2000 and 150 related to 2150
    5·2 answers
  • How many intersections are there of the graphs of the equations below? 1/2x + 5y = 6 3x + 30y = 36
    9·1 answer
  • Select the correct answer from each drop-down menu. A quarter is approximately 0.07 inches thick. A dollar bill is approximately
    5·1 answer
  • How do you write 2m + 6 in word phrase
    10·2 answers
  • Write the slope-intercept form of the equation of each line given the slope and y-intercept.
    11·1 answer
  • Pls plss help meeeeeeeeeeeeeeeeeeeeee
    11·1 answer
  • Who invented Maths?????​
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!