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Genrish500 [490]
3 years ago
10

Simplify the expression. 2/3 × [15 × 5 + (-24)] + (-18)

Mathematics
1 answer:
prisoha [69]3 years ago
4 0
<span>2/3 x [ 15 x 5 + ( -24 )] + ( -18 ) =  2/3 * [ 15 * 5 - 24 ] - 18 = 

= 2/3 * [ 45 - 24 ] - 18 = 2/3 * 21 - 18 = 2/3 * 21/1 - 18 = 2/1 * 7/1 - 18 =

= 14 - 18 = -4


</span>
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3 0
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If f(x) = 4x + 8.<br> What is f (9)?<br> Need help
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4 0
3 years ago
Read 2 more answers
I need help desperately! Could someone explain this math concept for me please?
Nana76 [90]

The inequality that represents the range of k so that inequality 1 has real solution is -3 < k < 5

<h3>How to determine the range?</h3>

<u>Inequality 1</u>

x^2 + (k + 1)x + k + 4 > 0

The discriminant is calculated using

D = b^2 - 4ac

So, we have:

D = (k + 1)^2 - 4 * 1 * (k + 4)

Evaluate

D = k^2 + 2k + 1 - 4k - 16

This gives

D = k^2- 2k - 15

Factorize the equation

D = (k+ 3)(k -5)

Solve for k

k = -3 and k = 5

Express the k values as inequalities

-3 < k < 5

<u>Inequality 2</u>

The inequality cannot be read, because of the image quality

Read more about discriminant at:

brainly.com/question/7784687

#SPJ1

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2 years ago
Which identify could be used to rewrite the expression x6-27
hammer [34]
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remember
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so
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