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sweet-ann [11.9K]
3 years ago
12

N2-14n+49 what’s the answer

Mathematics
2 answers:
Umnica [9.8K]3 years ago
6 0
A+b=14 anda*b = 49 The solution to this new system of equations is a=7, b=7. original expression is (n+7)(n+7), or (n+7)^2. *As always meaning when the coefficient of n^2 is 1. When the coefficient is 2+, it's not as simple but the same idea hope this helps
stira [4]3 years ago
5 0
(n-7) (n-7) will be your answer

n x n = n²

n x -7 = -7n
n x - 7 = -7n
-7n +(-7n) = -14n
-7 x -7 = 49

(n-7)²  is your answer

hope this helps

and if you are doing the other thing

n = 7, 7

hope this helps
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If the scale is 4 in to 5 ft, what is the actual length of a scale drawing with a length of 16 in
Gemiola [76]

Answer:

13

kStep-by-step explanation:

8 0
3 years ago
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Homeroom 101 and homeroom 102 share a hallway bulletin board. if home room 101 uses 3/5 of their half of display artwork what fr
STatiana [176]

To solve this problem you must keep on mind the following information:

The problem says that Homeroom 101 can use a half of display artwork (which is \frac{1}{2}) and they use \frac{3}{5}. Therefore, you only need to multiply both fractions, as following:

(\frac{1}{2} )(\frac{3}{5} )=\frac{3}{10}

Therefore, as you can see, the answer is: \frac{3}{10} of the bulletin board is used to display Homeroom 101’s artwork.

4 0
3 years ago
Anam is thinking of a prime number it is between 40 to 60 the differnce between is digit is 3 what prime number is anum thinking
irinina [24]
Answer:
41 or 47

Explanation:
First, list all the prime numbers from 40 to 60.
They are 41, 43, 47, 53 and 59.

It says the difference between each digit is 3, so we have to subtract the smaller digit from the larger digit in our list of prime numbers above.

4-1=3
4-3=1
7-4=3
5-3=2
9-5=4

Both 41 and 47 have a difference of 3 between their digits. So your answer is 41 or 47.
Hope this helped you!


6 0
4 years ago
Read 2 more answers
Use the shell method to find the volume of the solid generated by revolving the regions bounded by the curves and lines about th
RSB [31]

Answer:

The volume of the solid is:

\displaystyle\frac{19\pi}{6}

Step-by-step explanation:

See the graph of the region attached.

To find the intersection between the line and the parabola we set the equation equal to each other, and solve that quadratic equation by factorization:

x^2=9-8x\\x^2+8x-9=0\\(x+9)(x-1)=0\\x=-9,x=1

Since the region is the one for x\ge 0 then the intersection we are interested on is x=1 as it can also be seen in the graph.

Then we set the integral using shell method for revolving about the y-axis:

\displaystyle\int_a^b 2\pi\,x\,h(x)\,dx

Where h(x) is the height of the shell which here is the distance between the parabola and the line, so 8x-9-x^2 (since the line is on the top we subtract from it the parabola)

Then the integral becomes:

\displaystyle\int_0^1 2\pi\,x\,(8x-9-x^2)\,dx

Notice the limits of the integral are the x-axis (x=0) and the intersection of the parabola and the line that we found before (x=1)

Now, solving the integral:

Start by factoring the 2\pi and distributing the x:

=\displaystyle2\pi \int_0^19x-8x^2-x^3dx

Then use the basic rule to integrate:

=\displaystyle2\pi \left[\frac{9x^2}{2}-\frac{8x^2}{3}-\frac{x^4}{4}\right|_0^1

Then evaluate the antiderivative in the limits and subtract:

=\displaystyle2\pi\left[\frac{9}{2}-\frac{8}{3}-\frac{1}{4}-0\right]=\frac{19\pi}{6}

So the volume of the solid is \displaystyle\frac{19\pi}{6}

4 0
3 years ago
PLEASE HELP!!!
DIA [1.3K]
You would need 27 more dollars because f(x)=7x+2 plug in the 5 in x’s spot and you get 37 and so subtract it from 10 to get 27
7 0
3 years ago
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