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Gwar [14]
2 years ago
7

Solve the following equation for x.

Mathematics
1 answer:
Drupady [299]2 years ago
5 0

Answer:

6 {x}^{2}  + 54x + 120 = 0 \\ factors :  4 \: and \:  5 \\ =  (6x  + 24)(x + 5) \\   =  > x =  -4 \: and \:  - 5

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4 to the power of 55
LenaWriter [7]

\\ \sf\longmapsto 4^{55}

\\ \sf\longmapsto (4^5)^{11}

\\ \sf\longmapsto 1024^{11}

\\ \sf\longmapsto 1024^31024^41024^3

\\ \sf\longmapsto 1,073,741,824\times 1,073,741,824\times 1,099,511,627,776

\\ \sf\longmapsto 1.29807421E+33

6 0
2 years ago
Find the volume of the pyramid.
Korvikt [17]

Answer: 20

Step-by-step explanation:

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5 0
2 years ago
$17.00. If the CD is 20% off, and sales tax is 8%, what is the total price of the CD, including tax?
Over [174]
Divide 17 by .2 and multiply by .8
4 0
3 years ago
100 points!! Brainliest if correct
ollegr [7]

Answer:

SA = 16x^2 +30x+6

Step-by-step explanation:

The surface area is given by

SA = 2 (lw + lh + wh)

The length is 2x, the width is (x+3) and the height is (2x+1)

SA = 2 ((2x)*(x+3) + (2x)*(2x+1) + (x+3) (2x+1))

We need to distribute

SA = 2 ((2x^2+6x) + (4x^2+2x) + (2x^2 +6x+x+3))

Combine like terms

SA = 2 (2x^2+ 4x^2+2x^2+6x+2x  +6x+x+3)

SA = 2 (8x^2+15x+3)

Multiply by 2

SA = 16x^2 +30x+6

8 0
3 years ago
Read 2 more answers
Solve the system by substitution. <br> −7x−10y= 40 <br> x=−2y
Harrizon [31]

Answer:

x= -20, y= 10

Step-by-step explanation:

Label the two equations:

-7x -10y= 40 -----(1)

x= -2y -----(2)

Substitute (2) into (1):

-7(-2y) -10y= 40

Expand:

14y -10y= 40

Simplify:

4y= 40

Divide both sides by 4:

y= 40 ÷4

y= 10

Substitute y= 10 into (2):

x= -2y

x= -2(10)

x= -20

5 0
2 years ago
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