MATHEMATICS HIGH SCHOOL

Choose the correct simplification of the expression (−2x + 8y)(9x − 3y).−18x2 + 78xy − 24y2
18x2 + 78xy − 24y2
−18x2 − 78xy + 24y2
−18x2 + 72xy − 24y2

Answers

Answer 1
Answer: For these kinds of expressions use FOIL (first, outside, inside, last).

-2x • 9x = -18x^2
-2x • -3y = 6xy
8y • 9x = 72 xy
8y • -3y = -24y^2

Now combine them all:

-18x^2 + 78xy - 24y^2
Answer 2
Answer:

Answer:

The answer is A I just took the test

Step-by-step explanation:

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What is the slope of the line 12x+4y=24?

Answers

12x+4y=24\ \ \ \ /-12x\n\n4y=-12x+24\ \ \ \ /:4\n\ny=(-12)/(4)x+(24)/(4)\n\ny=-3x+6\n\nAnswer:the\ slope\ is\ m=-3
12x+4y=24 \n \n the \ slope \ intercept \ form \ is : \n \n y= mx +b \n \n 4y =-12x+24 \ \ / :4 \n \ny=-(12)/(4)x+(24)/(6)\n \ny=-3x+ 4 \n \nAnswer : \ the \ slope \ m =-3

Add.17. (+5) + (-2) + (-1)
18. (-7) + (-6) + (-2)
19. (+11) + (-9) + (-4)
20. (+4) + (-8) + (+6)

Answers

Answer:

17. +5-2-1=+2

18. -7-6-2=15

19. +11-9-4=-2

20.+4-8+6=+2

Solve the inequality 3m greater than or equal to 9

Answers

Hello, 

3m \geq 9\,\,(Divided\,\,for\,\,3)\n \n (3m)/(3) \geq (9)/(3)\n \n \boxed{m \geq 3}\,\, \,\,or\,\,\,\,\boxed{m \in\to[3, +\infty)}

Solve for x: |x − 2| 10 = 12 a.) x = 0 and x = 4
b.) x = −4 and x = 0
c.) x = −20 and x = 4
d.) no solution

Answers

|x - 2| + 10 = 12
|x - 2| = 12 - 10 = 2
x - 2 = 2 or x - 2 = -2
x = 2 + 2 or x = -2 + 2
x = 4 or x = 0

You can find the product of any two binomials using the _____ property.

Answers

distributive property

The symmetry of a hyperbola with a center at (h, k) only occurs at y = k.

True or False

Answers

Answer:

The given statement is a False statement.

Step-by-step explanation:

We know that the center of a hyperbola is the mid-point of the transverse axis of the hyperbola.

If the curves of hyperbola opens up and down such that the center is (h,k) then the symmetry of hyperbola is:

                             y=k

and if the curve opens to the right and to the left and the center is at (h,k) then the symmetry of hyperbola is:

                               x=h

Hence, the statement:

    The symmetry of a hyperbola with a center at (h, k) only occurs at y = k.

is FALSE.
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