All categories

2 years ago

I’ll give the Brainliest to who answers this question with a reasonable explanation.

Mathematics

1 answer:

Lyrx [107]2 years ago

5 0

$40/12 = unit rate simplify = 10/3
$10/3 per book
18 * 10/3 = $60 for 18 copies

You might be interested in

What is 289% as a decimal

lakkis [162]

Answer:

the answer is 2.89

Step-by-step explanation:

u divide 289 to 100 or 289/100=2.89

hope this helps

4 0

2 years ago

Read 2 more answers

Add 7/10 + 1/6 enter your answer below as a fraction in lowest terms, using the slash(/) as the fraction bar

san4es73 [151]

Answer:

13/15

Step-by-step explanation:

pls mark me brainliest

4 0

3 years ago

In ARST, m R = 92° and mZS = 71°. Which list has the sides of ARST in order from

OLga [1]

Answer:which grade are you

Step-by-step explanation:

If you are grade 7 to 9 I know

7 0

2 years ago

Tickets to a concert cost $2 for children, $3 for teenagers and $5 for adults. When 570 people attended the concert, the total t

-Dominant- [34]

Let

x--------> the number of children

y------> the number of teenagers

z------> the number of adults

we know that

$2x+3y+5z=1,950$ ------> equation A

$x+y+z=570$ -----> equation B

$y=\frac{3}{4}x$

$x=\frac{4}{3}y$ -------> equation C

Substitute equation C in equation A and equation B

$2[\frac{4}{3}y]+3y+5z=1,950$

$\frac{17}{3}y+5z=1,950$ --------> equation D

$[\frac{4}{3}y]+y+z=570$

$\frac{7}{3}y+z=570$ --------> equation E

Multiply equation E by $-5$

$-\frac{35}{3}y-5z=-2,850$ --------> equation F

Adds equation D and equation F

$\frac{17}{3}y+5z=1,950\\\\-\frac{35}{3}y-5z=-2,850\\\\---------\\\\-\frac{18}{3}y=-900\\\\y=3*900/18\\\\y=150\ teenagers$

therefore

<u>the answer is the option</u>

$150\ teenagers$

4 0

2 years ago

Read 2 more answers

From the set {30, 42, 84}, use substitution to determine which value of x makes the equation true.

Maru [420]

2,520/x = 60
x = 42, which means your answer is B.

2,520/42 = 60

8 0

1 year ago