Simplify and find value. a 3x^3−x^3+5x^3−9x^3 if x=−1

Mathematics

2 answers:

Snowcat [4.5K]3 years ago

7 0

Answer:

the answer is 2

Step-by-step explanation:

so when you simplify this problem you have to put (-1) in parentheses and then you multiply each number by itself and if it's an addition you add it.

balandron [24]3 years ago

4 0

Answer:

I think it is 2

Sorry if I got it wrong

You might be interested in

The concavity of a function is described by its

lesya [120]

The concavity of a function is described by its second derivative.

-The expression will not directly tell us whether the function is concave up or concave down and where it changes, though graphing the function may give us some sort of idea.

-The first derivative tells us the critical/important values (where there could be asymptotes), as well as where the function is increasing/decreasing.

-The second derivative tells us again the critical/important values, but also where the function is concave up/down. We find concavity in the same way we find increasing/decreasing using the first derivative.

-The third derivative, at least in my experience, has only been used to find acceleration of a function.

Hope this helps!! :)

8 0

3 years ago

PLS HELP ILL MARK BRAINLIEST FOR EXPLANATION If the spinner shown below is spun 40 times, predict the number of times the spinne

riadik2000 [5.3K]

b 1 10
—— = —— = ——
total 4 40 so it would be 10

5 0

3 years ago

Read 2 more answers

Please please help needs to be submitted in 15 minutes!!!

ollegr [7]

Answer:

Volume of prism 1: 104 cubic inches

Surface area of prism 2: 650 square inches

Step-by-step explanation:

To find the volume of prism 1, set up a proportion using the side lengths and the volume of prism 2.

The ratio of the side lengths will be your scale factor. When finding volume using scale factor, you need to cube the scale factor. The numerator in the proportion are from prism 1 and the denominator is prism 2. Prism 1 is the numerator since it is the new image and we are solving for it's volume.

$(\frac {4}{10}) ^{3} =\frac{x}{1625} \\\\\frac{64}{1000} =\frac{x}{1625} \\\\$

$1000x=104000\\\frac{1000x}{1000} =\frac{104000}{1000} \\x = 104$

To find the surface area of Prism 2, we are going to setup another proportion, but this time we are going to square the scale factor since we are finding area. Prism 2 will be the numerator and prism 1 will be the denominator.

$(\frac{10}{4} )^2 = \frac{x}{104} \\\frac{100}{16} =\frac{x}{104} \\16x=10400\\\frac{16x}{16}=\frac{10400}{16}\\ x= 650$