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lina2011 [118]
3 years ago
7

Please help! Thankss!! :)

Mathematics
2 answers:
Vsevolod [243]3 years ago
6 0

Answer:

21

Step-by-step explanation:

If b = -4, then -4(-4) is 16, since 2 negatives is a positive when multiplying or dividing. Then add 16 and 5, since 5 is c. You'll get 21

WITCHER [35]3 years ago
4 0
21
Explanation:
Follow PEMDAS (order of operations) to get answer.
-4(-4)+5
16+5 = 21
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Simplify the following expression.
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2. Keeping this property on mind, you can rewrite the expression as following and simplify:

\frac{-12x^{3}}{-4x}-\frac{48x^{2}}{-4x}=3x^{2}+12x


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Write 180 as a product of prime numbers.
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5 x 2 x 2 x 3 x 3

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Iris had $900. She spend 22% of this amount on a mobile phone. How much did she pay for the mobile phone
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A group of entomologists has determined that the population of ladybugs at a local park can be modeled by the equation y = − 1.4
Oksanka [162]
<h3>Answer:</h3>

A) 177.568 thousand.

B) 125.836 thousand.

<h3>Step-by-step explanation:</h3>

In this question, it is asking you to use the equation to find the population of ladybugs in a certain year.

Equation we're going to use:

y = -1.437 x + 197.686

We know that the "x" variable represents the number of years since 2010, so that means our starting year is 2010.

Lets solve the question.

Question A:

We need to find the ladybug population is 2024.

2024 is 14 years after 2010, so our "x" variable will be replaced with 14.

Your equation should look like this:

y = -1.437 (14) + 197.686

Now, we solve.

y = -1.437 (14) + 197.686\\\\\text{Multiply -1.437 and 14}\\\\y=-20.118+197.686\\\\\text{Add}\\\\y=177.568

You should get 177.568

This means that the population of ladybugs in 2024 is 177.568 thousand.

Question B:

We need to find the ladybug population is 2060.

2060 is 50 years after 2010, so the "x" variable would be replaced with 50.

Your equation should look like this:

y = -1.437 (50) + 197.686

Now, we solve.

y = -1.437 (50) + 197.686\\\\\text{Multiply -1.437 and 50}\\\\y=-71.85+197.686\\\\\text{Add}\\\\y=125.836

This means that the population of ladybugs in 2060 would be 125.836 thousand.

<h3>I hope this helped you out.</h3><h3>Good luck on your academics.</h3><h3>Have a fantastic day!</h3>
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4 years ago
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