7) c/a=d-r, for a<br><br> thanks

ella [17]

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1.C

2.C

3.D

4.D

5.D

6.A

7.C

8.B

9.A

10.C

11.A

12.B

13.D

14.C

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7 0

2 years ago

On a certain hot summer's day, 645 people used the public swimming pool. The daily prices are $1.75 for children and $2.50 for

VladimirAG [237]

Answer:

327 children and 318 adults

Step-by-step explanation:

The x be the amount of children and y be the amount of adults that were at the swimming pool. We can use this to set up a system of equations:

x+y=645

1.75x+2.50y=1367.25

Move y to the other side in the first equation to isolate x and solve the system using substitution:

x=645-y

1.75(645-y)+2.50y=1367.25

Distribute

1128.75-1.75y+2.50y=1367.25

1128.75+0.75y=1367.25

Subtract 1128.75 from both sides

0.75y=238.5

Divide both sides by 0.75

y=318

x=645-y

x=645-318

x=327

327 children and 318 adults swam at the pool that day

4 0

2 years ago

Find 23÷16 . Write in simplest form

stepladder [879]

Answer:

1 17 duhhhhhh

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

A ribbon is 30cm long and it is cut into three pieces such that each piece is 2cm longer than the next. Represent this as an equ

Alisiya [41]

Answer:

Step-by-step explanation:

3 pieces such that each piece is 2 cm longer then the next...

x , x + 2, x + 4

x + x + 2 + x + 4 = 30

3x + 6 = 30

3x = 30 - 6

3x = 24

x = 24/3

x = 8

x + 2 = 8 + 2 = 10

x + 4 = 8 + 4 = 12

check...

8 + 10 + 12 = 30

18 + 12 = 30

30 = 30 (correct)...it checks out

the ribbon lengths are : 8 cm, 10 cm, and 12 cm

3 0

3 years ago

Read 2 more answers

A guitar factory has a cost of production C(x)=75x+50000. If the company needs to break even after 150 units sold, at what price

s2008m [1.1K]

Step by step explanation:

75x + 50000 = 150x

50000 = 75x

x = 50000/75 = 666.67

answer:

666.7 || rounded to the nearest greatest cent

4 0

2 years ago

7) c/a=d-r, for a thanks