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
KiRa [710]
3 years ago
8

Liam is setting up folding chairs for a meeting. If he arranges the chairs in 9 rows of the same length, he has 3 chairs left ov

er. If he arranges the chairs in 7 rows of the same length, he has 19 left over. How many chairs does Liam have?
Mathematics
2 answers:
Ymorist [56]3 years ago
6 0
9n+3=7n+19, 9n-7n=19-3, 2n=16, n=8.
check it
72+3=75chairs

56+19=75chairs
loris [4]3 years ago
4 0
N=number of chairs in each row

amount he has at first=9 tiems n+reminder (3) or 9n+3

the 2nd times, he has 7 rows and reminder 19 so 7n+19

same amount of chair throught so
9n+3=7n+19
minus 7 both sides
2n+3=19
minus 3 both sides
2n=16
divide both sides by 2
n=8

total he has is 9n+3=9(8)+3=72+3=75

he has 75 chairs
You might be interested in
An airplane flies 1920 miles in 3 hours. What is it’s average speed in miles per hour?
const2013 [10]

Answer:

640

Step-by-step explanation:

you just divide

3 0
3 years ago
Simplify and solve for x. ​ ​ 5(x+20)= 7x+30
hodyreva [135]

Answer:

x = 35

Step-by-step explanation:

Solve for x:

5 (x + 20) = 7 x + 30

Expand out terms of the left hand side:

5 x + 100 = 7 x + 30

Subtract 7 x from both sides:

(5 x - 7 x) + 100 = (7 x - 7 x) + 30

5 x - 7 x = -2 x:

-2 x + 100 = (7 x - 7 x) + 30

7 x - 7 x = 0:

100 - 2 x = 30

Subtract 100 from both sides:

(100 - 100) - 2 x = 30 - 100

100 - 100 = 0:

-2 x = 30 - 100

30 - 100 = -70:

-2 x = -70

Divide both sides of -2 x = -70 by -2:

(-2 x)/(-2) = (-70)/(-2)

(-2)/(-2) = 1:

x = (-70)/(-2)

The gcd of -70 and -2 is -2, so (-70)/(-2) = (-2×35)/(-2×1) = (-2)/(-2)×35 = 35:

Answer: x = 35

6 0
4 years ago
Read 2 more answers
Find the volume of the triangular prism.
Anna35 [415]
First you find the area of the front face 1/2bh or in you case 10x12=120  1/2 of 120 is 60  next you multiply 60 by 20 to get 1,200 for the voulume 
3 0
3 years ago
What is 2/3 multiplied by 3/4 simplified? I need step by step to get answer.
Masteriza [31]
You start with the top number of each fraction and multiply them. So 2x3=6. Next you take the bottom number and multiply. So 3x4=12. That would give you a fraction of 6/12. 6 is half of 12 so 6/12 simplified is equal to 1/2. Hope this helps!
3 0
4 years ago
Miranda has 180 beads for making helpers. She buys 240 more beads. She wants to store the beads in a case with 6 sections. how m
yuradex [85]

Answer:

70 is the answer.

Step-by-step explanation:

180+240= 420

420 divided by 6 is 70

4 0
3 years ago
Other questions:
  • Please help, I will mark!!
    11·1 answer
  • It is the morning of the sandcastle-building competition at the beach. Dory has been looking forward to this event for months. A
    9·2 answers
  • Please explain to me how to do this or give me the answer.
    10·1 answer
  • The 9s in 9,905,482
    8·1 answer
  • The quotient of a number and - 2/3 is -9/10
    5·1 answer
  • What is the value of -5 in f(x)=-x^2+0.5x-5
    7·2 answers
  • Plz help me I dont understand
    15·1 answer
  • Which graph shows a function with a zero of –5?
    10·2 answers
  • Use the Pythagorean Theorem to find the distance of the missing side. (I’m sorry I need help with the whole thing)
    6·1 answer
  • What’s the equation of the blue line??
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!