HELPME PLEASE I BEG IU REALLLY NEED YOUR HELP I BEG I RELALY NEED HELP :( A LOT OF POINTS!

Answers

Answer 1

Answer: Question 75:
Simplify
-4x(3x^2-2x+1)

Answer:
-12x^3+8x^2-4x

Question 76:
(2x-6)(x+1)

Answer:
2x^2-6x+2x-6=2x^2-4x-6

Question 77:
8x^4+2x^3-4x^2

Answer:
GCF (Greatest Common Factor)
2x^2(4x^2+x-2)
GCF=2x^2

Question 78:
25x^8+15x^5

Answer:
5x^5(5x^3+3)

Question 79:
(x-4)(x+2)

Answer: x^2-2x-8

Question 80:
2x^2+7x+6
Factors: (2x+3)

Answer:
(2x+3)(x+2)
Other Factor:
(x+2)

Question 81:
(2x-1)^2

Answer:
4x^2-4x+1

Question 82:
4x^2-25

Answer:
(2x-5)(2x+5)

Question 83:
x^3+27

Answer:
(x+3)(x^2-3x+9)

Question 84:
x^3-125

Answer:
(x-5)(x^2+5x+25)

Question 85:
x^2=121
x=square root of 121

Answer:
x=11, -11

Question 86:
(x+3)(x+7)=0

Answer:
x=-3,-7

Question 87:
x^2-16=0
(x-4)(x+4)=0

Answer:
x=-4,4

Question 88:
x^2-3x-40=0
(x-8)(x+5)=0

Answer:
x=8,-5

Question 89:
x^2+3x+?

Answer:
x^2+3x+9/4
(x+3/2)(x+3/2)
9/4

Question 90:
x^2+5x=-1
x^2+5x+25/4=-1-25/4
(x+5/2)^2=the square root of -29/4
x+5/2=(square root of -29)/2

Answer:
x=(-5+ or - the square root of -29)/2

Question 91:
x^2+2x+c=0
1 real solution

Answer:
c=1

Question 92:
Use quadratic formula.
2x^2-4x+1=0
x=-b+ or - (the square root of b^2-4ac)/2a
x=4+ or - (the square root of 16-8)/4
x=4+ or - (the square root of 8)/4
x=+ or - 2 rad 2

Question 93:
y=2x^2

Answer:
y=1/2x^2

When the factor of x decreases, the graph widens.

Ur Welcome!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 2

Answer:

Answer:

Step-by-step explanation:

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Answer all 5 please!
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How many ways can a square be classifed

Answers

4 ways
It's a quadrilateral
It's also a rectangle and rhombus
And a square is a square
It also may be classified as some more, but that's all I can think of

Help with number 12 and 13 And please show work so I can understand how to do it

Answers

13: multiply the amount by the tax rate (to make a percent a decimal move the decimal point 2 places to the left) and add the original amount and the taxed amount together. For 12 do above but then multiply the total by the tip rate and add together (basically the same as the tax again) :) I hope this helps

An observer spots a plane flying at a 42 degree angle to his horizontal line of sight. If the plane is flying at an altitude of 15,000 ft, what is the distance (x) from the plane (P) to the observer (O)

Answers

This seems like a high school question. I will use trigonometry.

The three points (P, O, and the point on the ground directly below P [call it G]) form a right triangle. The 42-degree angle is opposite PG, the altitude of the plane. Since we are told to find x, which is PO, we can use the definition of the sine function, which is opposite divided by hypotenuse.

$sin(42^o)=(opp)/(hyp)=(15,000ft)/(x)$

Solving for x,

$x=(15,000ft)/(sin42^o)=(15,000ft)/(.66913)=22420\ ft$

This makes sense because the hypotenuse must be longer than either of the legs.

What's the square root of 52

Answers

The square root of 52 is 7.211

The answer is 7.21110255093.

Keyanna saved $75 this summer by babysitting. After school, she makes $10 a week babysitting. a) Write an equation for the amount, A, of money that she will have after w weeks.
b) How much will she have after 5 weeks?
c) How many weeks until she has $255?

Answers

Given:
Savings : $75
Babysitting earnings : $10 a week.

a) A = $75 + $10w

b) A = $75 + $10 * 5 weeks
A = $75 + $50
A = $125

c) A = $75 + $10w
$255 = $75 + $10w
$255 - $75 = $10w
$180 = $10w
$180/$10 = w
18 = w
Keyanna needs to babysit for 18 weeks.

Which phrase represents the expression 14x-19?

Answers

nineteen less than a number multiplied by 1414x means multiply 14 times a number-19 represents less than