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4 years ago

For which intervals is the function increasing?

Mathematics

1 answer:

Nana76 [90]4 years ago

6 0

Answer:

(-pi, 0)

Step-by-step explanation:

From the graph, we have 3 stationary point; the first one at x = 0, the second one at x = 1 and the last one at x = 2.

The function is increasing at two intervals.

The first increase is between x = -1 and x = 0.

The second increase is between x = 1 and x = 2.

From the choices give the interval that represent increase is (-pi, 0)

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Two people are standing on opposite sides of a hill. Person A makes an angle of elevation of 65° with the top of the hill and pe

8090 [49]

Answer:

Option 3. 71 ft. is the distance between B and top of the hill.

Step-by-step explanation:

Let the height of the hill is h ft and the distance of A from the hill be x ft and distance from B to hill is y.

It is given distance between A and B is 45 ft. ∠BAO = 65° and ∠ABO = 80°.

We have to find the distance of B from the top of the hill.

Now from ΔACO $tan 65 = \frac{h}{45-x} = 2.14$

$h=2.14(45-x)$

From ΔBCO $tan80 = \frac{h}{x} = 5.67$

h = 5.67x

Now h = 5.67x = 2.14(45-x)

5.67x = 96.3 - 2.14x

2.14x + 5.67x = 96.3

7.81x = 96.3

x = 96.3/7.81 = 12.33 ft

Therefore $cos80 = \frac{x}{OB}$

$0.174 = \frac{12.33}{OB}$

$OB = \frac{12.33}{.174}=70.86=71ft.$

Therefore 71 ft is the distance between B and the top of the hill.

3 0

3 years ago

Which of the following expressions is not equivalent to (-2)(8 + 6 + -3)?

MArishka [77]

Answer:

D is -31 also i checked to make sure.

8 0

3 years ago

Cancel my entire subscription please

stepladder [879]

Answer:

https://faq.brainly.com/hc/en-us/articles/360011078640-Cancelling-subscription-purchased-on-website

Step-by-step explanation:

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3 years ago

Read 2 more answers

6 divided by 3,724? I really need to know this............

ziro4ka [17]

Answer: 620 r4 (620.6, the decimal 6 has a line over it because it is repeating)

Step-by-step explanation:

Using long division:

6 2 0 r.4

6 ) 3 7 2 4

- 36 ↓

1 2

- 12 ↓

0 4

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8 0

3 years ago

Solve for x. z=(x-7)k

aliya0001 [1]

Answer:

$x=\frac{z}{k}+7$

Step-by-step explanation:

we have

$z=(x-7)k$

solve for x

That means ----> isolate the variable x

Divide by k both sides

$\frac{z}{k}=x-7$

Adds 7 both sides

$\frac{z}{k}+7=x$

Rewrite

$x=\frac{z}{k}+7$

5 0

3 years ago