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
choli [55]
3 years ago
14

It takes Bobby 12 hours longer to build a robot than it takes Alex. Together, they can build the Robot in 8 hours. How long does

it take Bobby to build the robot by himself?
Mathematics
1 answer:
anyanavicka [17]3 years ago
6 0

Answer:

24 hours

Step-by-step explanation:

The computation of the number of hours taken by Bobby to build the robot by himself is shown below:

Given that

Bobby could take 12 hours

Together they could build in 8 hours

So based on the above information

the number of hours taken by Bobby to build the robot by himself is

Let us assume the above line be x

So,

\frac{1}{8}-\frac{1}{12} = \frac{1}{x}  \\\\\frac{6 - 4}{48} = \frac{1}{x}  \\\\\frac{2}{48} = \frac{1}{x}  \\\\x = \frac{48}{2}

x = 24 hours

You might be interested in
Show that the two triangles given beside are similar and calculate the lengths of sides PQ and PR.
Rina8888 [55]

9514 1404 393

Answer:

  • ΔABC ~ ΔPQR
  • PQ = 8
  • PR = 14

Step-by-step explanation:

Angles A and P are marked congruent; angles B and Q are marked congruent, so the triangles are similar by the AA similarity postulate. The similarity statement can be written ...

  ΔABC ~ ΔPQR by AA similarity

__

The ratio of sides of PQR to ABC is the ratio QR/BC = 12/6 = 2. That is, each side in the larger triangle is 2 times the length of the corresponding smaller side.

  PQ = 2·AB = 2·4 = 8

  PR = 2·AC = 2·7 = 14

The side lengths of interest are ...

  PQ = 8, PR = 14

5 0
2 years ago
In the game of SCRABBLE, you select letters from the group in the pot that are not already on the board or in your hand or someo
ra1l [238]
333333333.3333333462804098816544788183775829905887615527590500299873666178495950918764647003852
8 0
3 years ago
Solve this problem. Find the number of gallons of paint needed to cover all four sides four sides) of the building shown with tw
liraira [26]
The complete question in the figure attached

1) calculate the area <span>all four sides
A=[12+9+12+9]*8=336 ft</span>²

if 1 gallons---------------------------- > covers 350 ft²
X------------------------------------ > 336 ft²
X=336/350=0.96 gallons
but remember 
<span>that there are two coats of paint
</span>therefore
0.96*2----------- > 1.92------- > 2 gallons

the answer is 2 gallons

7 0
3 years ago
Read 2 more answers
Which data set does the histogram represent?
MAVERICK [17]

Answer/Step-by-step explanation:

Ok so there is

3, 0-4                  4, 5-9                2, 10-14             1, 15-19       1, 20-24

so you can get rid of the last one saying it has more than 1 number between 20-24.

The 3rd one has to short of numbers for 0-4.

the second one has way to many 0-4's when there should be 3 of them.

therefore your answer is The firstone.

7 0
2 years ago
Read 2 more answers
(5-x) (b+2) using distributive properties simplify the following expression
lyudmila [28]

Answer:

-bx+5b-2x+10

Step-by-step explanation:

https://www.mathpapa.com/algebra-calculator.html?q=%5Cleft((5-x)(b%2B2%5Cright)

8 0
3 years ago
Other questions:
  • The circumference of a circle is 16π cm. What is the area, in square centimeters? Express your answer in terms of \piπ.
    9·2 answers
  • Explain how 2 ones is the same as 20 tenths
    9·1 answer
  • Lily took 57 seconds to walk from classroom to library.If the distance between the classroom and library was 38m, at what averag
    10·2 answers
  • 1/2x=8 as a mixed number show work​
    12·2 answers
  • If there are 1500 guests expected this weekend how many can we expect will revive free admission
    10·1 answer
  • Calculate the sum. 0.401 + 9.28 *
    11·2 answers
  • 2{ 5[7 + 4(17 - 9) - 22]}
    5·1 answer
  • Find the values for x and y.
    10·1 answer
  • a pitcher holds 4 2/3 pints of iced tea. If one serving is 1/3 of a pint, how many servings of iced tea does the pitcher hold?
    15·2 answers
  • Jonas wants to take out a bank loan of $7,500 to purchase a used car
    6·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!