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olga_2 [115]
3 years ago
7

Write a story that would use the following equation 12r = 156 to satisfy the story.

Mathematics
2 answers:
kompoz [17]3 years ago
5 0
Melina bought 12 rings for a total of $156. Create an equation that helps you to solve for the price for one ring. Let r equal the price per ring.
Eddi Din [679]3 years ago
4 0
12r=156

Answer r=13

it will help you
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Please help me with this ASAP (Geometry)
9966 [12]
4) They are congruent by ASA.

5) you can set up a proportion.

original height / shadow = original of tree/ shadow of tree

18/21 = x/14
21x = 252
x = 12

SO the height of the tree is 12

Hope this helps :)
7 0
3 years ago
A publisher needs to send many books to a local book retailer and will send the books in a combination of small and large boxes.
mote1985 [20]

Answer:

5 large boxes

3 small boxes

Step-by-step explanation:

Create two equations to represent the problem.

let "a" be the number of small boxes

let "b" be the number of large boxes

20a + 40b = 260    This equation shows the numbers of books

a + b = 8                  This equations shows the number of boxes

Solve the system of equations (solve for a and b). We can solve using the substitution method.

Rearrange a + b = 8 to isolate one of the variables.

a = 8 - b    New equation that represents "a"

Since we know an equation for "a", we can substitute what "a" equals into the other equation. There will only be one variable in the equation, so we can solve by isolating. Isolate by doing reverse operations.

Substitute "a" for 8 - b

20a + 40b = 260

20(8 - b) + 40b = 260     Distribute 20 over the brackets by multiplying

160 - 20b + 40b = 260    Collect like terms (numbers with same variables)

160 + 20b = 260    Start isolating "b". Subtract 160 from both sides

20b = 260 - 160

20b = 100    Divide both sides by 20

b = 5    Number of large boxes

Substitute "b" for 5 in the simplest equation

a + b = 8

a + 5 = 8      Subtract 5 from both sides to isolate "a"

a = 8 - 5    

a = 3      Number of small boxes

Therefore there were 5 large boxes and 3 small boxes sent.

3 0
3 years ago
What is the simplest form of the square root 1764
Ludmilka [50]

Answer:

42



Hope this helps Buddy!



- Courtney


5 0
3 years ago
Read 2 more answers
What is the slope of у= 3х — 9​
astra-53 [7]

Answer:

3?

Step-by-step explanation:

3 is the slope intercept I believe

8 0
3 years ago
Write 20% as a decimal.
miskamm [114]
0.2 would be 20% written as a decimal.
7 0
3 years ago
Read 2 more answers
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