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
Nataly_w [17]
3 years ago
13

William is setting up for folding chairs for a meeting he arranges the chairs and seven rows of the same link he has three chair

s left over if he arranges the chairs in five rows the same length he has 21 left over how many chairs does he have left
Mathematics
1 answer:
DiKsa [7]3 years ago
8 0

Answer:

William has a total of 66 chairs.

Step-by-step explanation:

Let the number of chairs in each row be 'x'.

Also let the Total number of chairs be 'y'.

Given:

If he arranges the chairs in seven rows of the same length he has three chairs left

Number of rows = 7

Number of chairs left = 3

Now we can say that;

Total number of chairs will be equal to number of chairs in each row multiplied by Number of rows plus Number of chairs left.

framing in equation form we get;

y=7x+3

Also Given:

If he arranges the chairs in five rows of the same length he has 21 chairs left

Number of rows = 5

Number of chairs left = 21

Now we can say that;

Total number of chairs will be equal to number of chairs in each row multiplied by Number of rows plus Number of chairs left.

framing in equation form we get;

y=5x+21

Now we know that Total number of chairs are same.

Hence we can say that both the equations are equal.

7x+3=5x+21

Combining like terms we get;

7x-5x=21-3\\\\2x= 18

Dividing both side by 2 we get;

\frac{2x}{2}=\frac{18}{2}\\\\x=9

So we can that there are 9 chairs in each row.

Now to find the total number of chairs he has we will substitute value of x in any of the equation we get;

y =7x+3\\\\y=7\times9+3\\\\y=63+3 =66

Hence William has a total of 66 chairs.

You might be interested in
Please help me please thank you
AleksandrR [38]

Answer:

x = 15

Step-by-step explanation:

angles 2 and 4 are supplementary so they add up to 180

2x + 10 + 4x + 80 = 180

6x + 90 = 180

6x = 90

x = 15

7 0
3 years ago
Read 2 more answers
I really don’t know how to do this at all , help
klasskru [66]

Answer:

Plot -11 on the tick mark directly to the left of -10.

Step-by-step explanation:

Hope this helps!

-Josh

5 0
2 years ago
Read 2 more answers
The height of a tree trunk is 20 meters and the base diameter is 0.5 meter.
Temka [501]
Question a:

Mass = Density × Volume 
Density = Mass/Volume

Volume of the tree trunk (the shape of Cylinder) = Area of circular base × height
Volume = [πr²] × h
Volume = [π × 0.25²] × 20
Volume = 3.93 m³

Density = 380 kg/m³

Mass = Density × Volume
Mass = 380 × 3.93
Mass = 1493.4 kg

------------------------------------------------------------------------------------------------------------

Question b)

The growth ring = 4 millimeters = 4÷1000 = 0.004
New diameter = 0.5 + 0.004 = 0.5004
New height = 20 + 0.2 = 20.2

New volume = [πr²] × h
New volume = [π × 0.2502²] × 20.2
New volume = 3.97 m³



5 0
3 years ago
Your race car weighs 1.5 tons. To make the car faster, you replaced the steel body with carbon-fiber and reduced the weight by 3
Elenna [48]
1.5 tons = 3000 pounds (because 1 ton is 2000 pounds)
Subtract 300 pounds, and you get 2700 pounds.
8 0
3 years ago
Read 2 more answers
Evaluate −x+| y | when x=1/3 and y=−7/4. Write your answer as a fraction in simplest form.
Mama L [17]

Answer: = \frac{17}{12}\quad \left(\mathrm{Decimal:\quad }\:1.41666\dots \right)

Step-by-step explanation:

-\frac{1}{3}+\left|-\frac{7}{4}\right|

=-\frac{1}{3}+\frac{7}{4}

=\frac{17}{12}

5 0
3 years ago
Other questions:
  • I’m circle y, what is the measure of angle 1?<br><br> A. 6<br><br> B. 25<br><br> C. 31<br><br> D. 37
    7·2 answers
  • What is the value of the digit 5
    9·1 answer
  • What is the value of x? Teach me
    5·1 answer
  • In the circle shown, BD is a diameter, m1 = 100° and m = 30°. m3 = _____
    11·1 answer
  • 2.
    7·1 answer
  • Calvin had $10. When he bought 7 colored pencils and 2 notebook at $1.30 per notebook, the change was $1.10 what is the price of
    8·2 answers
  • Help help help!!! I don't know how to do it!!!
    10·2 answers
  • Please help me with this!!
    6·1 answer
  • Can somebody please help me out please my grads are bad
    9·2 answers
  • WILL MARK BRAINLIEST IF YOU ANSWER THIS CORRECTLY AND FULLY WORTH TONS OF POINTS a goat is kept on a 4 meter chain connected to
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!