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stepan [7]
3 years ago
10

In don't understand how to work this problem out

Mathematics
1 answer:
andrezito [222]3 years ago
4 0
x^2+8x-11=\\
x^2+8x+16-27=\\
(x+4)^2-27=\\
(x+4-\sqrt{27})(x+4+\sqrt27)=\\
(x+4-3\sqrt{3})(x+4+3\sqrt3)

x^2+6x-11=\\
x^2+6x+9-20=\\
(x+3)^2-20=\\
(x+3-\sqrt{20})(x+3+\sqrt{20})=\\
(x+3-2\sqrt5)(x+3+2\sqrt5)
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B should be your answer. 125-360= -235

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3 years ago
20. What is the volume, in terms of r, for a cylindrical
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Step-by-step explanation:

Volume of cylindrical container

= \pi {r}^{2} h \\  \\  = 3.14 \times ( {3.25)}^{2}  \times 10 \\  \\  = 3.14 \times 10.5625 \times 10 \\  \\  = 331.6625  {cm}^{3}  \\  \\  \approx \: 331.66 \:  {cm}^{3}

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a line has the equation 4y=3x-8 which is the equation of a line parallel to this line that has a y intercpt of 4?
Nikolay [14]

Answer:

y=34x+2.625

y=34x+2.75

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y=34x+1.25

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Correct answer:

y=−34x+2.75

Step-by-step explanation:

5 0
3 years ago
Select the correct answer. What is the domain of the function f(x) = 4x − 16? all real numbers all positive real numbers all pos
bagirrra123 [75]
Hello!

Since the function has no undefined points or domain constants the answer is all real numbers

The answer is all real numbers

Hope this helps!
8 0
3 years ago
Read 2 more answers
PLEASE HELP!!! Show your work too, please!
dimulka [17.4K]

Step-by-step explanation:

first fish tank: 95-4x

second fish tank: 40+5x

1. Define variable

The variable x represents the number of days.

2. Write the inequality

<em>95-4x=40+5x</em>

<em />

3. You probably don't need the answer but I am just going to solve.

The first fish tank will have less water than the second fish tank after 7 days.

<em>95-4x=40+5x </em>

<em>95-4(7)=40+5(7)</em>

<em>95-28=40+35</em>

<em>67=75</em>

<em>Since the first equation (95-4x) represents the first fish tank, and the second equation (40+5x) represents the second fish tank, the solution shows how the amount of water in the first fish tank is less than the amount of water un the second fish tank after 7 days.</em>

8 0
3 years ago
Read 2 more answers
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