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
jeka57 [31]
3 years ago
8

Rebecca went swimming yesterday. After a while she had covered one fifth of her intended distance. After swimming six more lengt

hs of the pool, she had covered one quarter of her intended distance. How many lengths of the pool did she intend to complete?
Mathematics
1 answer:
kondor19780726 [428]3 years ago
3 0

Answer:

E. 120

Step-by-step explanation:

A. 40

B. 72

C. 80

D. 100

E. 120

Let

x = the intended distance

y = length of the pool

She covers one fifth of her intended distance

Distance covered = 1/5 of x

= x/5

After swimming six more lengths of the pool she had covered one quarter of her intended distance

x/5 + 6y = 1/4 of x

x/5 + 6y = x/4

Collect like terms

6y = x/4 - x/5

6y = 5x - 4x/20

6y = x/20

x = 20 * 6y

= 120y

x = 120y

The intended distance Rebecca wants to cover = 120

You might be interested in
A circle is shown. Secants E G and D G intersect at point G outside of the circle. Secant E G intersects the circle at point F a
USPshnik [31]

Answer:

Step-by-step explanation:

The formula we need here is

6(6+x)=5(5+x+3)

which simplifies to

6(6+x)=5(8+x)

which simplifies to

36 + 6x = 40 + 5x and

x = 4

So DG = 5 + 4 + 3 which is 12

7 0
3 years ago
Read 2 more answers
a rectangular fish pond is 21 ft squared in area. if the owner can surround the pond with a 20 ft fence what are the dimensions
Alika [10]
The dimensions are 41 ft
5 0
3 years ago
Read 2 more answers
Why can't <img src="https://tex.z-dn.net/?f=x%5E2-5x-1" id="TexFormula1" title="x^2-5x-1" alt="x^2-5x-1" align="absmiddle" class
7nadin3 [17]

Answer:

Step-by-step explanation:

Discussion.

Not directly. But the quadratic formula can do it. But that's not your question.

the factors you get must contain the factors for 1 which are 1 and - 1

These factors must add to - 5. There's no way that will happen with 1 and - 1 and you would be creative math if you tried to say that you could make one of the factors (x -1-1-1-1-1-1). That creates a whole new question.

5 0
1 year ago
PLEASE HURRY WILL GIVE BRAINLIEST A truck can be rented from Company A for $90 a day plus $0.30 per mile. Company B charges $70
rjkz [21]

Answer:

  40 miles a day

Step-by-step explanation:

The difference in fixed charge is $20; the difference in mileage charge is $0.50 per mile. So it will take $20/$0.50 = 40 miles for the extra mileage cost to eat up the savings in fixed cost. At that mileage, both companies will charge the same amount:

  A: 90 + 0.30·40 = 102

  B: 70 + 0.80·40 = 102

4 0
3 years ago
Haley buys 18 bars of chocolate which cost her $5.40. TO raise money for charity she sells them at 40 cents each. She manages th
azamat

Answer:

33.333...% over the base 100% (100% is representing the $5.40)

Step-by-step explanation:

she gets $7.20 from selling the 18 chocolate bars

7.20 divided by 5.40 is 1.3333...

the 1 in 1.3333... represents the base 5.40 and the 0.3333... represents the profit

8 0
1 year ago
Other questions:
  • Gcf of 28 and84 and 65 39 and 75 and 45
    15·1 answer
  • Torn runs 10 miles in 85 minutes at the same rate how many minutes would he take to run 8 mile
    10·1 answer
  • Please help me I don't knoe how to do these
    10·2 answers
  • How many distinct permutations can be formed using the letters of the word “TALLAHASSEE”?
    11·1 answer
  • A quantity decreases from 35 to 30 ? What is the percent change ?
    8·2 answers
  • 2x^2+15x+2=0<br><br> Need the answers for the two x's that are equal to 0
    9·1 answer
  • Which is a correct verbal expression for
    8·1 answer
  • 2 ( 3x - 1) = -6x -2​
    14·2 answers
  • Write -15.175 as a mixed number
    13·2 answers
  • Spencer bought a new roll of tape. There were 7 yards of tape on the roll The Spencer used 6.3 yards of the tape to make a colla
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!