3 years ago

I need help please and thanks Number 9

Mathematics

1 answer:

Leni [432]3 years ago

4 0

Answer:

x= 1.75

Step-by-step explanation:

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-5x² – 2x+10 - x² + 7x +5

muminat

Answer:

-6x² + 5x + 15

Step-by-step explanation:

Combine like terms. Like terms are terms with the same amount of variables.

Reorder based on descending powers:

-5x² - x² + 7x - 2x + 10 + 5

(-5x² - x²) + (7x - 2x) + (10 + 5)

(-6x²) + (5x) + (15)

-6x² + 5x + 15 is your answer.

8 0

3 years ago

Rewrite this as a decimal PLEASE!: <br><br> 13/10=???

stepladder [879]

1.3 hope that helps

8 0

3 years ago

Use the function below to find f(4).<br> f(x)= 1/3•4^x

kenny6666 [7]

Answer:

f(4) = 85 1/3 or 85.333...

Step-by-step explanation:

To find f(4), you must substitute 4 in place of x whenever x appears:

f(x) = $\frac{1}{3}$ * $4^{x}$

f(4) = $\frac{1}{3}$ * $4^{4}$

Next, simplify the exponent:

f(4) = $\frac{1}{3}$ * 256

Finally, multiply:

f(4) = 85 1/3 or 85.333...

5 0

3 years ago

How to start the problem I don’t understand how they got 20n

mash [69]

N/0.05 - 2 < -4.6
n/0.05 < -4.6 + 2
n/0.05 < --2.6
n < -0.13

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3 years ago

Please help out its due today :]

slamgirl [31]

Answer:help this kid

Step-by-step explanation:

6 0

3 years ago