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elixir [45]
3 years ago
15

Factor 2x 4 - 20x 2 - 78.

Mathematics
2 answers:
trapecia [35]3 years ago
8 0
Divide everything by 2: 2(x4-10x2-39). Now factor: 2(x2+3)(x2-13) or B. We know it's not A because the last variable is negative so the signs must be different. :)
const2013 [10]3 years ago
6 0
2(x^4 - 10x^2 - 39)
2(x^2 - 13)(x^2 + 3)

Letter B
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PLEASE HELP ILL GIVE BRAINLIEST
valentina_108 [34]
#1 is A and #2 is 24 I think
8 0
3 years ago
4.) Trapezoids ABCD and EFGH are congruent. What is the length of side FG?
maria [59]

Answer:

C. 15m

Step-by-step explanation:

if ABCD and EFGH are congruent that means that they are equivalent to each other. If side FG is the base of that trapizoid, and side CD is the base with the measurement of 15m, then we are left to believe that side FG is 15m

5 0
4 years ago
What is the volume of the cone below?​
nataly862011 [7]

Answer:

96 pi

Step-by-step explanation:

The formula for the volume of a cone is V=pi*r^2*h/3 the radius is 4 and the height is 18 plug in those values into the equation to get V=pi*16*6 16*=96 so the answer is 96 pi.

3 0
3 years ago
Read 2 more answers
Please help explanation if possible
Zielflug [23.3K]

Answer:

length = 48 feet , width = 32 feet

Step-by-step explanation:

Using

2W + 2L = 160 with W = L - 16 , then

2(L - 16) + 2L = 160 ← distribute and simplify left side

2L - 32 + 2L = 160

4L - 32 = 160 ( add 32 to both sides )

4L = 192 ( divide both sides by 4 )

L = 48

Substitute L = 48 into W = L - 16

W = 48 - 16 = 32

Thus length = 48 feet and width = 32 feet

3 0
3 years ago
Read 2 more answers
Can someone find all m’s for me<br> please???
icang [17]
5) 1 - -1/ 2-3


-2/1

The m is -2



6)

-1-3/ 1-3

-4/-2

M= -2


7)
M= 0


8)

3-5/ 5- 0

-2/5

M= -0.4


9)

M= -1


10)
M= -3


Hope this helps


-Zayn Malik 1795



5 0
3 years ago
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