3 years ago

Write an equation and solve. Round to the nearest hundredth where necessary.

Mathematics

1 answer:

mixas84 [53]3 years ago

5 0

Answer:

its is c.

Step-by-step explanation:

it c because 25% needs to be a decimal to be able too multiply.and when you get that done then it is 0.25 x 75=18.75

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Evaluate the expression<br>7 + 10 /5

Anestetic [448]

Answer:

Step-by-step explanation:

Use PEMDAS (Parenthesis, exponent, multiplication, devision, addition, subtraction)

So....

7 + 2 .... Simplified ( 10/5 =2)

9 ..... Added

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3 years ago

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Mashutka [201]

Answer:

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3 years ago

While testing a new vaccine, a lab technician noticed that the number of bacteria reduced by half every minute. How long does it

son4ous [18]

To start, find your equation, n=3000(.5)^t, n being your number of bacteria and t being your time. Now plug in 375 for n and solve for t, 375=3000(.5)^t, .125=.5^t, $t=log_{.5} .125=3$ . This means your answer is 3 minutes. To check it, plug it into your equation. n=3000(.5)^t=3000(.125)=375