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adelina 88 [10]
3 years ago
6

All of the following expressions have the same value, when x = -2 and y = 4, except _____.

Mathematics
2 answers:
Mrrafil [7]3 years ago
6 0
I think the answer is c
irinina [24]3 years ago
4 0

Answer:

C

Step-by-step explanation:

When plugged in it is -4(-2)² which equals -16 while the others equal 16

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100 points
Pavlova-9 [17]
STEP
1
:

y
Simplify —
3
Equation at the end of step
1
:

y
(((18•(x5))•(y3))+((6•(x2))•(y4)))+((((24•(x6))•—)•x)•y)
3
STEP
2
:

Equation at the end of step
2
:

y
(((18•(x5))•(y3))+((6•(x2))•(y4)))+((((23•3x6)•—)•x)•y)
3
STEP
3
:

Canceling Out:

3.1 Canceling out 3 as it appears on both sides of the fraction line


Equation at the end of step
3
:

(((18•(x5))•(y3))+((6•(x2))•(y4)))+((8x6y•x)•y)
STEP
4
:

Equation at the end of step
4
:

(((18•(x5))•(y3))+((2•3x2)•y4))+8x7y2
STEP
5
:

Equation at the end of step
5
:

(((2•32x5) • y3) + (2•3x2y4)) + 8x7y2
STEP
6
:

STEP
7
:
Pulling out like terms

7.1 Pull out like factors :

8x7y2 + 18x5y3 + 6x2y4 = 2x2y2 • (4x5 + 9x3y + 3y2)

Trying to factor a multi variable polynomial :

7.2 Factoring 4x5 + 9x3y + 3y2

Try to factor this multi-variable trinomial using trial and error

Factorization fails

Final result :
2x2y2 • (4x5 + 9x3y + 3y2)
3 0
2 years ago
2x-y=10 y=-4x+2 substitution method
AlladinOne [14]

Answer:

the solution is (2, -6)

Step-by-step explanation:

Substitute the second equation into the first, replacing y in the first:

2x - (-4x+2) = 10

Simplifying, we get:

2x + 4x - 2 = 10, or:

6x = 12, which yields x = 2.

Substituting 2 for x in the second equation yields y = -4(2) + 2 = 0, or y = -6

Then the solution is (2, -6).

5 0
2 years ago
The angle of depression from a balloon on a 75ft string to a person on the ground is 36°. How high is the balloon?
Rainbow [258]

Answer:

Step-by-step explanation:

sin36=h/75

h=75sin36

h=44.08ft

5 0
2 years ago
What is the probabilty of drawing a diamond from a standard deck of cards on a second draw, give that a diamond was drawn on the
kobusy [5.1K]

Answer:

need help too

Step-by-step explanation:

8 0
2 years ago
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10x - (5+3x)<br> To short LOL
never [62]
10x - (5+3x)
10x - 8x
10x - 8
18x
5 0
3 years ago
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