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3 years ago

7

PLZ HELP QUICK PLZ

1 answer:

olya-2409 [2.1K]3 years ago

5 0

Answer:

hope this helps you

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Solve the system using substitution x+5y=0 3y+2x=-21

Crazy boy [7]

Answer:

$\left \{ {{x = -15} \atop {y=3}} \right.$

Step-by-step explanation:

$\left \{ {{x + 5y = 0} (1) \atop {3y + 2x = -21}(2)} \right. \left \{ {{x = -5y} \atop {3y + 2x = -21}} \right. \left \{ {{x = -5y} \atop {3y + 2*(-5y) = -21}} \right. \left \{ {{x = -5y} \atop {3y - 10y = -21}} \right. \\ \left \{ {{x = -5y } \atop {-7y = -21}} \right. \left \{ {{x = -5y} \atop {y= 3 }} \right. \left \{ {{x = -5 * 3} \atop {y=3}} \right.=> \left \{ {{x=-15} \atop {y=3}} \right.$

5 0

3 years ago

Read 2 more answers

Pepper Jackie has 7.5 bags of mulch to cover 12 yds squared 2 of edible flower beds. If she wants to distribute the mulch evenly

anyanavicka [17]

Answer:

$\frac{5}{8}$

Step-by-step explanation:

Data provided in the question

Number of bags of mulch = 7.5 bags

Number of square yards = 12

So by considering above information, we could find the number of bags for each square yard is

= $\frac{Number\ of\ bags\ of\ mulch }{Number\ of\ square\ yards }$

= $\frac{7.5}{12}$

= 0.625

The 0.625 is equal to $\frac{5}{8}$ bag

Therefore, she need to use $\frac{5}{8}$ bag for each square yard

Basically we use the fraction so that each square yard for use of bag could be find out

3 0

4 years ago

Read 2 more answers

???? Help me please

liberstina [14]

1) I have no idea... -.-

2) $80

3) 12

4) 13

5) 42

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3 years ago

Sam created a porch that was part wooden and part concrete, as shown in the figure below. Note: Figure not drawn to scale If a =

rjkz [21]

Youre gonna have to upload a picture of the porch, "figure below"

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3 years ago

People in _____ careers are "thinkers." They like using their minds to solve problems. They often excel in science and math. The

8090 [49]

The answer is realistic. I hope this helps ! :)

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3 years ago