3 years ago

Over which interval is the graph of fx =-x2 + 3x + 8 increasing

Mathematics

1 answer:

Semenov [28]3 years ago

8 0

Answer:

Step-by-step explanation:

it is increasing in $]-\infty;3/2]$

because this is like

$f(x)=ax^2+bx+c$

where a > 0

and -b/a=3/2

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Shtirlitz [24]

Answer:

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3 years ago

Given ab/bc = fe/ed find ac

zubka84 [21]

Well, you can cancel out the b and e, so a/c = f/d.

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3 years ago

Subtract. –7 – 12<br> a. –19<br> b. –5<br> c. 5<br> d. 19

den301095 [7]

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4 years ago

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Tpy6a [65]

Answer:

The value of x that makes the equation true is 3

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Explanation:

From the attached image;

Let us write the mathematical equation of the model.

The long bar means x, while the small squares have a value of 1 each.

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solving the equation we have;

$\begin{gathered} 2x+5=11 \\ 2x=11-5 \\ 2x=6 \\ \text{divide both sides by 2;} \\ \frac{2x}{2}=\frac{6}{2} \\ x=3 \end{gathered}$

Therefore, the value of x that makes the equation true is 3

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1 year ago

The larger number is 18 more than twice the smaller. If the sum of the two numbers is 93, find

Zigmanuir [339]

Answer:

The smaller is 25

the larger is 68

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3 years ago