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
Alborosie
4 years ago
8

Laura is three times as old as Luci. In 5 years, the sum of their ages will be 30. What are the current ages of Laura and Luci?

Mathematics
1 answer:
Scrat [10]4 years ago
4 0

Answer:

Laura is 15 and Luci is 15.

Step-by-step explanation:

Now...

Laura - 3x

Luci - x

In 5 years...

Laura - 3x+5

Luci - x+5

The sum of that is...

4x+10=30

-10       -10

4x=20

4/4  20/4

x=5

If...

Laura - 5 than.....

Luci - 15 because 5*3 is 15

You might be interested in
WORTH ALOT OF POINTS PLEASE HELP. Nathaniel is a salesperson who sells computers at an electronics store. He makes a base pay am
Rzqust [24]

Answer: 2

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
12. What is the equation of the following parabola?
Vladimir79 [104]

Answer:

c

Step-by-step explanation:

6 0
3 years ago
Need help please, does any one know how to do this​
ziro4ka [17]

Answer:

  • (6-u)/(2+u)
  • 8/(u+2) -1
  • -u/(u+2) +6/(u+2)

Step-by-step explanation:

There are a few ways you can write the equivalent of this.

1) Distribute the minus sign. The starting numerator is -(u-6). After you distribute the minus sign, you get -u+6. You can leave it like that, so that your equivalent form is ...

  (-u+6)/(u+2)

Or, you can rearrange the terms so the leading coefficient is positive:

  (6 -u)/(u +2)

__

2) You can perform the division and express the result as a quotient and a remainder. Once again, you can choose to make the leading coefficient positive or not.

  -(u -6)/(u +2) = (-(u +2)-8)/(u +2) = -(u+2)/(u+2) +8/(u+2) = -1 + 8/(u+2)

or

  8/(u+2) -1

Of course, anywhere along the chain of equal signs the expressions are equivalent.

__

3) You can separate the numerator terms, expressing each over the denominator:

(-u +6)/(u+2) = -u/(u+2) +6/(u+2)

__

4) You can also multiply numerator and denominator by some constant, say 3:

  -(3u -18)/(3u +6)

You could do the same thing with a variable, as long as you restrict the variable to be non-zero. Or, you could use a non-zero expression, such as 1+x^2:

  (1+x^2)(6 -u)/((1+x^2)(u+2))

7 0
3 years ago
Tim predicts he will get 98 points on the next exam. If Tim actually earned 62 points, what was Tim's percent error?
Nataly [62]

Answer:

If Tim actually earned 62 points . Therefore Tim's percent error is 58.1 % .

Step-by-step explanation:

3 0
3 years ago
SOME ONE HELP!!!!! this test is due soon
valentina_108 [34]

Answer:

4.66 (4 2/3, 14/3)

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Other questions:
  • Can somebody solve this for me $1.12 for 9.2 ounces
    14·1 answer
  • Find the value of x and the value of y.
    11·2 answers
  • PLEASE HELP, ITS A TEST PLEASE
    10·1 answer
  • A circle with radius of \greenD{6\,\text{cm}}6cmstart color #1fab54, 6, start text, c, m, end text, end color #1fab54 sits insid
    7·1 answer
  • Sal currently has $100 in a savings account and is saving $20 per week, while his brother Bill has $400 in
    5·1 answer
  • A population of 1,000 bacteria is treated with a medicine and begins to die 5% each hour. How can the bacteria population be det
    14·1 answer
  • Please please help i’ll give brainliest tysm:))
    15·2 answers
  • Factor the quadratic expression completely.
    11·1 answer
  • 7W + 3 = -4W - 85 <br><br>a. -11<br>b. 11<br>c. 8<br>d. -8<br>​
    10·1 answer
  • What is the solution to the system of equations in the graph below?
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!