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guajiro [1.7K]
3 years ago
9

-3(x + 2)2 + 4 = -8 what’s the answer

Mathematics
2 answers:
podryga [215]3 years ago
8 0
X=0

-3(0+2)2+4 distribute -3 to the parentheses-PEMDAS
(0-6)2+4 multiply 2 by the parentheses
(0-12)+4 solve the equation
= -8
Gnesinka [82]3 years ago
7 0

Answer:

x = 0

Step-by-step explanation:

First, multiply the -3 by two (<u>-3</u>(x + 2)<u>2</u> + 4 = -8) -- -6(x+2)+4 = -8.

Then, subtract 4 from both sides (-6(x+2)+<u>4</u> = -8) -- -6(x+2) = -12

After that, divide both sides by -6 (<u>-6</u>(x+2) = -8) -- \frac{-6\left(x+2\right)}{-6}=\frac{-12}{-6}

Simplify -- x+2=2

Subtract 2 from both sides (x+<u>2</u>=2) -- x = 0

Hope this helped! Good luck with future math problems :)

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Sand for use on icy roads is stored in a conical pile 14.2 m high and with a base diameter of 34.4 m calculate the volume of the
sammy [17]

Answer:

1. The volume of the pile is 4,399.7719 m^3

2. The number of sanders to be filled from a pile is 638

Step-by-step explanation:

Here, we firstly would calculate the volume of the pile

Mathematically, that will be;

V = 1/3 * pi * r^2 * h

from the question, h = 14.2

Mathematically, r = d/2

r = 34.4/2 = 17.2 m

So the volume will be:

V = 1/3 * 3.142 * 17.2^2 * 14.2

V = 4,399.7719 m^3

To find the number of sanders to be filled,

we simply divide the volume obtained by the volume a sander can take

That will be;

4,399.7719/6.9

= 637.6 which is 638

4 0
3 years ago
A store that specializes in shipping packages reports that the distribution of packages shipped during the winter holidays is no
scZoUnD [109]

Answer: Hey, do you know how to screenshot images? There is also a website for Brainly if needed

Step-by-step explanation:

7 0
3 years ago
0.8x = 12. Solve for X. PLEASEEE HELPPP!!
kenny6666 [7]

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Step-by-step explanation:

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3 years ago
Read 2 more answers
Triangle ABC is shown below.<br> What is the length of line segment AC?
Rzqust [24]

Answer:

The length of the line segment AC is equal to 14

Step-by-step explanation:

The triangle above is an isosceles triangle, In an Isosceles triangle the two angles; B and C are the same, hence the two sides; AB and AC are also the same.

AB=2x    and AC= 3x - 7

AB = AC

which implies;

2x = 3x - 7

subtract 3x from both-side of the equation

2x - 3x = 3x -3x -7

-x = -7

Multiply through by -1

x = 7

But we were ask to find the the length of the line segment AC

AC = 3x - 7

substituting x = 7 into the above equation will yield;

AC = 3(7) - 7 = 21 - 7 =14

Therefore the length of the line segment AC is equal to 14

3 0
3 years ago
Simplify the expression. . 1 V 3.0 2​
Vlad [161]

Answer:

81x^4/16  (81x to the fourth over 16)

Step-by-step explanation:

First you apply the exponent rule: (a/b)^c  ->  a^c/b^c

So it looks like this: 3x^2/4^2

Then you apply the exponent to the whole thing, and 3^4 is 81, x^4 stays like that, and 2^4 is 16

You can't simplify any more after that so that's your answer

Hope this helps!

5 0
3 years ago
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