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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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Two trains leave Cleveland at the same time. One train travels east and the other travels west. The speed of the westbound train
OlgaM077 [116]

Answer:

The eastbound train travels at 92 mph and the westbound train travels at 96 mph.

Step-by-step explanation:

We know that Velocity = distance / time

If the eastbound train travels at x miles per hour, the westbound train travels at x + 4 mph.

After 3.5 hours, they are 658 miles apart. If we solve for distance the formula given above we have: Distance = velocity x time. We have that the total distance between both trains is 658 miles.

Substituting the values of the problem and solving for x we have

658 = 3.5x+3.5(x+4)\\658=3.5x+3.5x+14\\644=7x\\92=x

Thus, the eastbound train travels at 92 mph and the westbound train travels at 96 mph.

6 0
3 years ago
Allie and Sam are ophthalmologists. Allie found that 40% of the 170 patients she saw in a week were near sighted. Sam found that
Hatshy [7]

Answer:

Allie: 68  Sam: 59

Step-by-step explanation:

You take 40% from 68 and 25% from 236 and boom.

3 0
3 years ago
Read 2 more answers
Which equation represents a line which is parallel to the line y = -x – 5?
NISA [10]

Answer:

None of them

Step-by-step explanation:

y=-x-5 => slope=-1

A. slope =-2/3

B. slope =-3/2

C. slope = 2/3

D. slope = 2/3

None of slope of the choices is -1

3 0
3 years ago
Answers for the 2 boxes please :)​
jek_recluse [69]

Answer:

(0, 3 )

Step-by-step explanation:

Given the 2 equations

x + 3y = 9 → (1)

- 2x + 2y = 6 → (2)

Multiplying (1) by 2 and adding to (2) will eliminate the x- term

2x + 6y = 18 → (3)

Add (2) and (3) term by term to eliminate x, that is

0 + 8y = 24

8y = 24 ( divide both sides by 8 )

y = 3

Substitute y = 3 into either of the 2 equations and solve for x

Substituting into (1)

x + 3(3) = 9

x + 9 = 9 ( subtract 9 from both sides )

x = 0

solution is (0, 3 )

7 0
2 years ago
Read 2 more answers
A mobile phone carrier charges an extra fee if a customer uses more than 500 minutes each month. Tom has already used 230 minute
Gekata [30.6K]
The answer is x + 230 ≤ 500
4 0
3 years ago
Read 2 more answers
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