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galina1969 [7]
3 years ago
10

Help plz Ik its a lot but I will give you 40

Mathematics
2 answers:
timama [110]3 years ago
8 0

Answer:

1.    343

2.   64

3.   81

4.   12.25

Step-by-step explanation:

frez [133]3 years ago
3 0

Answer:

7^{3} = 343

4 cubed = 64

9^{2} = 81

(3.5)^{2} = 12.25

Step-by-step explanation:

7^{3} is the same thing as 7 * 7 * 7.

7 * 7 = 49

49 * 7 = 343

4 cubed can be written as 4^{3}, which is the same as 4 * 4 * 4.

4 * 4 = 16

16 * 4 = 64

9^{2} is the same as 9 * 9.

9 * 9 = 81

(3.5)^{2} is the same as 3.5 * 3.5.

3.5 * 3.5 = 12.25

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Sam is moving bags of soil from a loading dock into a storeroom. The top soil weighs 40 pounds per bag and the mulch weighs 20 p
Levart [38]

Answer:

40x+20y\leq 480

Step-by-step explanation:

Givens

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  • The mulch weighs 20 pounds per bag.
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Notice that the restriction is a maximum of 480 pounds, that means the inequality must include the sign \leq.

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3 years ago
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goblinko [34]

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Erica can paint her room 5 hours .If she had her friend Rachel help her , they can paint the room together in 3 hours .How long
LUCKY_DIMON [66]

Answer:

7 hours 30min

Step-by-step explanation:

Step one :

Given data

We are told that Erica can paint 1 room in 5hours

Her work rate is 1/5 room per hour

And also with the assistance of her friend they can paint 1 room in 3 hours

Hence their combined work rate is 1/3 room per hour

Step two

The combined work expression is

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