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2 years ago

On what interval is the function increasing.

1 answer:

5 0

The derivative of a function may be used to determine whether the function is increasing or decreasing on any intervals in its domain. If f′(x) > 0 at each point in an interval I, then the function is said to be increasing on I. f′(x) < 0 at each point in an interval I, then the function is said to be decreasing on I.

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What is the answer to 9a-3(2a-4)=15

Alecsey [184]

Answer:

a=1

Step-by-step explanation:

The answer to this problem is 1. This is the answer because using PEMDAS, you would first have to distribute -3.

So: 9a+ -6a+12=15

Combine like terms:

3a+12=15

Subtract 12 on each side. 3a= 3

Divide 3 on each side.

a=1

Hope this helps!! :D

4 0

3 years ago

Read 2 more answers

Given equations A and B as 2/5x+y=12 and 5/2y-x=6 respectively which expression will eliminate the variable X a) 5/2A+2/5B b)5/2

frutty [35]

Answer:

C) $A+\frac{2}{5}B$

Step-by-step explanation:

Given Equations:

A) $\frac{2}{5}x+y=12$

B) $\frac{5}{2}y-x=6$

In order to eliminate $x$ we need to multiply $\frac{2}{5}$ to equation B and add it to A.

Multiplying $\frac{2}{5}$ to B.

⇒ $\frac{2}{5}\times (\frac{5}{2}y-x)=\frac{2}{5}\times 6$

⇒ $(\frac{2}{5}\times\frac{5}{2}y)-(\frac{2}{5}x)=\frac{12}{5}$

⇒ $y-\frac{2}{5}x=\frac{12}{5}$

Adding it equation A.

$\frac{2}{5}x+y=12$

+ $-\frac{2}{5}x+y=\frac{12}{5}$

We get $2y=\frac{72}{5}$

Thus $x$ is eliminated.

So, the expression used to eliminate $x$ is:

$A+\frac{2}{5}B$

4 0

3 years ago

Find an equation of a line that has a slope 7 and passes through the point 3,11

choli [55]

You’re given that m=7 (slope is 7), so setup the slope-intercept form with that info: y = 7x + b.

Now you need to find b. Plug in (3,11) for x and y, x=3 and y=11.

11 = 7*3 + b

Notice the only variable left is b, so you’ll find b this way.

11 = 21 + b and then subtract 21 from both sides:

11 - 21 = b

-10 = b

Plug that back into the equation and you have y = 7x -10

5 0

3 years ago

How does one solve for the n+1st term with the nth term of a sequence

love history [14]

Answer:

<h3>The answer is option B</h3>

Step-by-step explanation:

The nth term of the sequence is

A(n) = 5n + 7

To find the (n+1)st term substitute n+1 into the general equation

That's

<u>For (n + 1)st term</u>

A(n+1) = 5(n+ 1) + 7

A(n+1) = 5n + 5 + 7

Hope this helps you

4 0

3 years ago

Read 2 more answers

3x+2y=2x+8 in point slope form

masya89 [10]

Answer:
3x+2y=2x+8
3x-2x+2y=8
3x-2x=8-2y
x=8-2y

3 0

4 years ago