3 years ago

Seven more than a number is less than or equal to -18

Mathematics

1 answer:

amid [387]3 years ago

7 0

Answer:

7+x≤-18 is the equation to you question

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X - 37 ≤ -1 13/14 solve

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Answer:

405/14

Step-by-step explanation:

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3 years ago

Andy has $261.81 left in his bank account after buying a tennis racquet and a can of tennis balls. The racquet cost $76.58 and t

fiasKO [112]

Answer:

$352

Step-by-step explanation:

76.58+13.61=90.19

261.81+90.19=352

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4 years ago

Jala put $600 in an interest bearing account with a annual compound interest rate of 5%. Jala determined that after seven years,

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4 years ago

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A sample of 400 grams of radioactive substance decays according to the function A(t) = 400e^-.046t, where t is the time in years

algol13

Answer: There will be 0.04 grams will be left in the sample after 20 years.

Step-by-step explanation:

Since we have given that

$A(t)=400e^{-0.46t}$

Here, Initial amount of radioactive substance = 400 grams

We need to find the amount of substance that will be left in the sample after 20 years.

So, t = 20 years

So, it becomes,

$A(t)=400e^{-0.46\times 20}\\\\A(t)=400e^{-9.2}\\\\A(t)=0.04\ grams$

Hence, there will be 0.04 grams will be left in the sample after 20 years.

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4 years ago

What is 35% of 80 ? A 15 B. 24 С 28 D 52

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The answer is C 28 I hope this helped :)

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3 years ago