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vlabodo [156]
3 years ago
15

Over which interval is the graph of f(x) = –x2 + 3x + 8 increasing?

Mathematics
2 answers:
Juliette [100K]3 years ago
5 0
Graphing the equation, it is increasing at (–∞, 1.5)
zalisa [80]3 years ago
4 0
Hello,

Answer A: (-infini,3/2)
Vertex is (3/2,41/4) and the curve is turning its concavity down.
f'(x)=-2x+3=0==>x=3/2

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A 168-cm tall person is 2 cm in Ming’s model. How high should his model swing be if the actual swing is 231 cm high?
serious [3.7K]

Answer:

The model swing should be <u>2.75 cm</u> high.

Step-by-step explanation:

Given:

A 168-cm tall person is 2 cm in Ming’s model.  

If the actual swing is 231 cm high.

Now, to find how high should his model swing be.

Let the model swing be x\ cm.

So, 168 cm tall person is equivalent to 2 cm.

Thus, 231 cm actual swing is equivalent to x\ cm model swing.

Now, we get the height of the swing in the model by using cross multiplication method:

\frac{168}{2} =\frac{231}{x}

<em>By cross multiplication:</em>

⇒ 168x=462

<em>Dividing both sides by 168 we get:</em>

⇒ x=2.75\ cm.

Therefore, the model swing should be 2.75 cm high.

3 0
4 years ago
What is this ??<br>Answer this question​
ahrayia [7]

Answer:

Highlighter

Step-by-step explanation:

I think it is highlighter.

5 0
3 years ago
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Find the value of x for which m||n
KiRa [710]

Answer:

x = 61

Step-by-step explanation:

Alternate exterior angles must be congruent for the lines to be parallel.

3x - 43 = 2x + 18

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6 0
2 years ago
Chelsey wants to join a fitness club. She has a coupon that will give her $12.50 off the monthly rate for the first 6 motnhs. Wi
MAVERICK [17]

Answer:

Your answer is 10

Step-by-step explanation:

So if you have to pay 55 out front and then continue to pay 19.50 monthly the equation will look like this:

19.50*m + 55 = x

(M stands for month)

She has 250 dollars to spend so add that in for x

19.50*m + 55 = 250.  

Use inverse operations.

250-55 and 55-55

19.50*m = 195

195/19.50 and 19.50/19,50

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Your answer is 10

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3 years ago
What is the answer to 3/2000 as a percent
Nina [5.8K]
The answer to this is .15%
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