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mash [69]
2 years ago
8

Expand and simplify (6x-2)^2​

Mathematics
2 answers:
IgorLugansk [536]2 years ago
4 0

Answer:

\sf 36x^2 -24x +4

solving step wise:

\sf (6x-2)^2

\sf (6x-2)(6x-2)

\sf 36x^2 -12x -12x +4

\sf 36x^2 -24x +4

or

\sf (6x-2)^2

\sf (6x)^2 +2*6x*-2+(-2)^2

36x^2 -24x +4

ANTONII [103]2 years ago
3 0

Answer:

36x²-24x+4

Step-by-step explanation:

6x-2² 6x-2 6x-2

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Sharon needs 3.5 yards or fabric to make a dress for herself and 2.25 yards of the same fabric to make a matching dress for her
maks197457 [2]

Answer:

.75 yards

Step-by-step explanation:

6.5 - 3.5 - 2.25 = .75


8 0
4 years ago
An equilateral triangle has a perimeter of 90 inches. Find the area of the equilateral triangle in simplest radical form.
KIM [24]

Answer:

450

Step-by-step explanation:

If the perimeter is 90 inches then each side must equal 30 inches. To find the area of a triangle you mulptiply the base by the height and divide by 2. The base is 30 and the height is 30. 30*30=900. 900/2=450.

6 0
3 years ago
EF is the median of trapezoid ABCD.
BARSIC [14]

Answer:

Part A) x = 11

B) length of BC =  x + 12 =  x + 12 = 11 + 12 =23

length of EF =  4x - 18 =  4(11) - 18 = 44 - 18 =26

length of AD =  3x - 18 =  3(11) - 4 = 33 - 4 =29

Step-by-step explanation:

Median of trapezium is m=\frac{base1+base2}{2}

In provided figure, base1 is x+12 and base2 is 3x-4

A) solve for value of x

calculate the median m=\frac{base1+base2}{2}

4x-18=\frac{x+12+3x-4}{2}

4x-18=\frac{4x+8}{2}

4x-18=2x+4

2x-18=4

2x = 18 + 4

2x = 22

x = 11

B) To find the length of BC, AD and EF , put the value of x in equation of lines

length of BC =  x + 12 =  x + 12 = 11 + 12 =23

length of EF =  4x - 18 =  4(11) - 18 = 44 - 18 =26

length of AD =  3x - 4 =  3(11) - 4 = 33 - 4 =29

5 0
3 years ago
I need help! I'm *so* confused! I will mark Brainliest
Naddik [55]

Answer:

(-2,21)

Step-by-step explanation:

2 days ago, Paulo's commute time was halfway between his commute times 8 and 9 days ago.

8 days ago means that x-coordinate -8 represents this day. Count 8 units to the left and find that when x = -8, y = 24 minutes.

9 days ago means that x-coordinate -9 represents this day. Count 9 units to the left and find that when x = -9, y = 18 minutes.

Find halfway commute time between points (-8,24) and (-9,18):

y=\dfrac{24+18}{2}=\dfrac{42}{2}=21,

then coordinates that Paulo should graph are

(-2, 21)

(-2 means 2 days ago, 21 is the halfway)

5 0
3 years ago
Evaluate the expression please.
Tanzania [10]

Answer:

-7

Step-by-step explanation:

-3-(-10)/-2+1

-3-5+1

-8+1

-7

6 0
2 years ago
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