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
bagirrra123 [75]
3 years ago
14

Brooke has to set up 70 chairs for the class talent show. But, there is not room for more than 20 rows.

Mathematics
1 answer:
den301095 [7]3 years ago
4 0
If there are 70 chairs but only 20 rows then that means he will have to set up 3.5 chairs per row, or Brook could set up 14 rows with 5 chairs in each row.

Srry if that didn't help but that's what i got from that.
You might be interested in
Solve the following problems. Be sure to indicate if a solution is to be rejected based on the contextual situation.
aleksklad [387]

Answer:

1. 5/3 cm

2. 10 in

Step-by-step explanation:

1. The length of a rectangle is 4 cm more than 3 times its width.

Let the length be L and the width B

Then,

L = 4 + 3B

If the area of the rectangle is 15 cm2

Area = LB = 15

B(4 +3B) = 15

3B² + 4B - 15 = 0

3B² - 5B + 9B - 15 = 0

B(3B - 5) + 3(3B - 5) = 0

(3B - 5)(B + 3) = 0

3B - 5 =  or B + 3 = 0

B = 5/3 or -3

since B cannot be negative, B = 5/3 cm

2. The ratio of length to width in a rectangle is 2 ∶ 3.

Let the length be L and the width B

Then,

L/B = 2/3

2B = 3L, B = (3/2)L

when the area is 150 in2.

Area = LB = 150

(3/2)L² = 150

L² = 150×2÷3

L² = 100

L = √100

L = ±10

since the length cannot be negative, L = 10 in

4 0
3 years ago
Find the slope of the line containing the pair of points (4,8), (9,-4)
Papessa [141]

The given points are (4,8) & (9,-4)

slope of a line =  <u>Y2 - Y1</u>

                            X2 - X1


              ====>   <u>(-4) - 8</u>   =    <u>-12</u>

                            9   - 4           5

6 0
3 years ago
Read 2 more answers
Linear system please help 60 points * please please please help will give brainlist
bearhunter [10]

Answer:

1. a. b = - 8

b. x = 8

c. x = 11

d. x = 5

2. 12 soccer balls and 8 basketballs can be purchased.

Step by step explanation

a. - 14 + 6b + 7 - 2b = 1 + 5b

Calculate the sum

- 7 + 6b - 2b = 1 + 5b

Collect like terms

7 + 4b = 1 + 5b

Move variable to L.H.S and change it's sign

Similarly, Move constant to R.H.S and change its sign

4b - 5b = 1 + 7

Collect like terms

- b = 8

Change the signs on both sides of the equation

b =  - 8

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

b. \frac{5x   + 10}{ - 6}  =  - 5

Apply cross product property

5x + 10 =  - 5 \times  ( - 6)

Multiply the numbers

5x + 10 = 30

Move constant to R.H.S and change its sign

5x = 30 - 10

Calculate the difference

5x = 20

Divide both sides of the equation by 5

\frac{5x}{5}   = \frac{20}{5}

Calculate

x = 4

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

c. - 15 =  \frac{ - 8x - 17}{7}

Apply cross product property

- 15 \times 7 =  - 8x - 17

Multiply the numbers

- 105 =  - 8x - 17

Swap the sides of the equation

- 8x - 17 =  - 105

Move constant to R.H.S and change its sign

- 8x =  - 105 + 17

Calculate

- 8x =  - 88

Change the signs on both sides of the equation

8x = 88

Divide both sides of the equation by 8

\frac{8x}{8}  =  \frac{88}{8}

Calculate

x = 11

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

D. 5 = 6x + 5(x - 10)

Distribute 5 through the parentheses

5 = 6x + 5x - 50

Collect like terms

5 = 11x - 50

Swap both sides of the equation

11x - 50 = 5

Move constant to R.H.S and change its sign

11x = 5 + 50

Calculate the sum

11x = 55

Divide both sides of the equation by 11

\frac{11x}{11}  =  \frac{55}{11}

Calculate

x = 5

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

2.

Solution,

No.of students in soccer = x

No.of students in basketball = y

Total no.of students = 20

i.e x + y = 20 → equation ( i )

Cost of soccer ball = $ 7

Cost of basketball = $ 10

Total budget = $ 164

i.e 7x + 10 y = 165 → equation ( ii )

In equation ( i ),

x + y = 20

Move 'y' to R.H.S and change its sign

x = 20 - y

Put the value of x in equation ( i )

7(20 - y) + 10y = 164

140 - 7y + 10y = 164

3y = 164 - 140

3y = 24

y =  \frac{24}{3}

y = 8

Now, put the value of y in equation ( i ) ,

x + y = 20

x + 8 = 20

x = 20 - 8

x = 12

Hence, 12 soccer balls and 8 basketballs can be purchased.

Hope this helps...

Best regards!!

6 0
3 years ago
Read 2 more answers
Can someone help me with these questions please it’s a big part of my grade also please explain as well I’ll mark u brainlist!
Murrr4er [49]
1) 12t

2) 12t (sub in t=5 to represent 5 teams)

12(5)= 60

Therefore, you need 60 players to fill in 5 teams.

Hope this helps!! :)
8 0
2 years ago
the length of a rectangle is one more than two times the width. The area of a rectangle is 136. find the dimensions
Shkiper50 [21]
I'm not sure how to work this out but I can tell you the formula.
Formula - 2w + 1. 

6 0
3 years ago
Read 2 more answers
Other questions:
  • Martha is making 5 batches of cookies. Each batch uses 3/4 cup butter. How much butter does she need for all of her cookies?
    10·1 answer
  • WELP ME PLZZ THANKSSS
    10·1 answer
  • A 12-ft ladder leaning against a house makes a 64 degree angle with the ground. Will the ladder reach a window sill that is 10.5
    9·1 answer
  • Te dog’s nap started at 7:14am and ended<br> at 7:57am. How long was the dog’s nap?
    7·2 answers
  • 60 PTS WILL MARK BRAINLIEST IF CORRECT {see image}
    11·2 answers
  • If you are asked to complete 5 sit-ups for every 9 push-ups you complete, answer each of the following questions:
    9·1 answer
  • What is the mode of: 9.6, 2, 4.1, 8, 5.9, 2, 3.7, 6, 7.6?<br> 7.6<br> 5.4<br> 5.9<br> 2
    15·1 answer
  • Which graph does NOT represent a function?
    11·2 answers
  • Please help, theres a picture
    7·2 answers
  • Dogs Playing PokerBarry and Kerrie are discussing their pets during a poker game. Barry tells Kerrie that he has at least one do
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!