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3 years ago

Why is substitution sometimes more helpful than elimination?

1 answer:

5 0

Substitution method is not better or worse than any other method of solving ... Sometimes substitution can be easier than using elimination or graphing. ... Maybe you would like to learn more about one of these?

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A store is having a sale on trail mix and jelly beans. For 5 pounds of trail mix and 6 pounds of jelly beans the total cost is $

inna [77]

The cost for each pound of trail mix and each pound of jelly is given below.

Step-by-step explanation:

Let t = cost/pound of trail mix

Let j = cost/pound of jelly beans

5t + 6j = 35

3t + 2j = 15 = > 2j = 15 - 3t

5t + 3(15 - 3t) = 35

5t + 45 - 9t = 35

- 4t + 45 = 35

- 4t = - 10

4t = 10

t = 2.5

3(2.5) + 2j = 15

7.5 + 2j = 15

2j = 7.5

j = 3.75

7 0

2 years ago

Which shows the best estimate to use to find 43 × 78?

Over [174]

Answer:

The best estimate for 43x78 is 40x80

Step-by-step explanation:

43 rounded to the nearest ten is 40.

78 rounded to the nearest ten is 80.

The answer to 40x80 is 3200

4 0

3 years ago

Pls help me with this :)

Firdavs [7]

Answer:

looks like school work

Step-by-step explanation:

DO IT ON YOUR OWN

6 0

3 years ago

HELP PLS “geometry”

Bumek [7]

Answer:

Nameric Response

Step-by-step explanation:

a rectangular tabletop has diagonal

4 0

1 year ago

You have 10 liters of juice that is 40% juice and 60% water. You want the mixture to be 70% juice and 30% water. How many liters

damaskus [11]

Answer:

14 liters

Step-by-step explanation:

10 liters : 4 liters of juice and 6 liters of water

4/10 of juice and 6/10 of water

make it to 70% of juice and 30% of water

add 14 liters of juice

14/20=70% of juice

6/20=30% of water

4 0

3 years ago