3 years ago

7th grade Math help please

Mathematics

2 answers:

ankoles [38]3 years ago

7 0

Answer:

Step-by-step explanation:

Its D

Its not B because:

100-1=99 cant be less than 40+4=44

Good luck!

schepotkina [342]3 years ago

3 0

Answer: B. 100-h < 40+2h

Step-by-step explanation: If it says the first tank is less it probably is B and not D.

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sp2606 [1]

Answer:

-4 1/4

Step-by-step explanation:

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3 years ago

Evaluate a + b to the 2nd power for a = 2 and b = 3

jarptica [38.1K]

Answer:

Step-by-step explanation:

You add 2+3 and get 5. Then you square it to get 25.

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A bag contains pennies, nickels, dimes and quarters. There are 50 coins in all. Of the coins 16% are pennies and 42% are dimes.

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2 years ago

If someone can give me the answers for all :)

tia_tia [17]

Answer:

1. x²=a² + b²

x²=10²+7²

x²=100+49

x²=149

x=√149

12.206555615

x=12.2

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x²=19²+ 21²

x²=361+441

x²=802

x=√802

x=28.319604517

x=28.3

3.x²=a²+b²

x²=27²+16²

x²=729+256

x²=985

x=√985

x=31.384709652

x=31.3

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x=√191.93

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4 0

3 years ago

What is 7(34-99)-7+2 7/9

allsm [11]

Answer:

-459 2/9

Step-by-step explanation:

calculate 34-99= -65

and turn 2 7/9 into a mixed number as 25/9

leaves u with

7(-65)-7+25/9

multiply 7x-65=-455

-455-7+25/9

-462+25/9

get common denomionator and add

-4133/9 or -459 2/9 or -459.2

7 0

2 years ago