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
TEA [102]
3 years ago
11

You can paint a room in 8 hours. Working together, you and a friend could paint the same room in just 5 hours. How long would it

take your friend to paint the room alone.
Mathematics
1 answer:
Degger [83]3 years ago
5 0

Answer:

friend alone could do it in 13 hours and 1/3

Step-by-step explanation:

Your rate = room/8

friends rate = room/x

combined rate = room/8 + room/x

= room(x+8)/(8x)

then

5 = room / [room(x+8)/(8x)]

5 = 8x/(x+8)

8x = 5x + 40

3x = 40

x = 40/3 = 13 1/3

friend alone could do it in 13 hours and 1/3

You might be interested in
Find the three cube roots of z=−3+3i in trigonometric form. Please show your work :) ill give brainliest
disa [49]

Answer:

The Answer to your problem is 3 √ 2

Step-by-step explanation:

Step 1.  Find 0  ( helps to plot z on complex plane)

z is in quadrant 4

0 is between  -\pi/z and 0

Step 2. Find modulus |z|

|z|= check mark 3 to the power of 2 + (-3) power of 2 = check mark, 9+9 = check mark 18 =check mark 9.

Step 3. Write out z in polar form

z = 3 check mark 2.

 

5 0
3 years ago
Find the value of 956$ deposited for 12 years in a account paying 6% anuale interest when it is...
Alekssandra [29.7K]

Answer:

  • 1. $1953.57
  • 2. $1923.66

Step-by-step explanation:

<u>Compounded interest amount formula:</u>

  • A = P(1 + r/n)^(nt)

<u>Given</u>:

  • P = $956
  • r = 6% = 0.06
  • t = 12 years
  • n = 4 and n = 1

1. <u>Compounded quarterly</u>

  • A = 956(1 + 0.06/4)^(4*12) = 956(1.015)^48 = 1953.57

2. <u>Compounded annually</u>

  • A =  956(1 + 0.06)^12 = 1923.66
6 0
3 years ago
Read 2 more answers
State the complement of each of the following sets: (a) Engineers with less than 36 months of full-time employment. (b) Samples
iren2701 [21]

Answer:

(a) Engineers with greater than 36 months of full-time employment.

(b) Samples of cement blocks with compressive strength greater than 6000 kilograms per square centimeter

(c) Measurements of the diameter of forged pistons that conform to engineering specifications.

(d) Cholesterol levels that measure less than 180 and greater than 220.

Step-by-step explanation:

The complement of a set refers to elements that does not exist in that set. It means what does not exist in the set but exist in the universal set.

(a) Engineers with greater than 36 months of full-time employment.

In this case, the Universal set is a set of engineers in full-time employment. The given set is for engineers with less than 36 months of full-time employment. The complement is engineers with greater than 36 months of full-time employment.

(b) Samples of cement blocks with compressive strength greater than 6000 kilograms per square centimeter

In this case, the universal set is a set of samples of cement block having compressive strength. The given set is a set of cement block having compressive strength less than 6000 kilograms per square centimeter. The complement is samples of cement blocks with compressive strength greater than 6000 kilograms per square centimeter.

(c) Measurements of the diameter of forged pistons that conform to engineering specifications.

In this case, the universal set is a set of measurements of the diameter of forged pistons. The given set is a set of measurements of the diameter of forged pistons that do not conform to engineering specifications. The complement is a set of measurements of the diameter of forged pistons that conforms to engineering specification.

(d) Cholesterol levels that measure less than 180 and greater than 220.

In this case, the universal set is a set of Cholesterol levels. The given set is Cholesterol levels that measure greater than 180 and less than 220. The complement is Cholesterol levels that measure less than 180 and greater than 220.

5 0
3 years ago
Choose the best definition for the following term: substitution
Elan Coil [88]
<span>solving one of the equations (you choose which one) for one of the variables (you choose which one), and then plugging this back into the other equation, "substituting" for the chosen variable and solving for the other. Then you back-solve for the first variable.</span>
7 0
3 years ago
Read 2 more answers
‼️‼️Pls Help this is due soon and I will give brainliest to first answer‼️‼️
poizon [28]

Answer:

The answer is A!

3 0
3 years ago
Other questions:
  • Compare the values of the underline digits. 2,402 and 64,513   the value of 4 in _______________ is _______ times the values of
    6·1 answer
  • Nathan plants equal-sized squares of sod in his front yard. Each square has an area of 6 square feet. Nathan plants a total of 1
    7·2 answers
  • I just have no idea where to begin on this one :/
    11·1 answer
  • What is the answer to this −6+3(2+(−4t)) there are 3 awnsers plz elp
    5·1 answer
  • Can someone please complete this GCF chart? I'm having trouble. 50pts.
    12·2 answers
  • If x=5, then 3x+4x-15 equals what
    12·1 answer
  • I need help, if is right I mark you as brainliest.
    5·2 answers
  • Do these ratios form a proportion 6/3 and 9/12
    12·2 answers
  • The diameter of a pearl is about 4 x 10-3cm and the diameter of an atom is about10-11m. How much larger than an atom is a pearl?
    8·1 answer
  • Which fraction is equivalent to StartFraction 2 Over 6 EndFraction? StartFraction 3 Over 7 EndFraction, because StartFraction 2
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!