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Ipatiy [6.2K]
3 years ago
9

X (2x - 7)^3= (2x)^3- 7^3 = 8x3 - 343

Mathematics
1 answer:
emmainna [20.7K]3 years ago
4 0

Answer:

(2x - 7)³ ≠ (2x)³- 7³

Step-by-step explanation:

(2x - 7)³= (2x)³- 7³

Use pascal's triangle to expand left side. Simplify all else.

(2x)³ + 3(2x)²(-7)¹ + 3(2x)¹(-7)² + (-7)³ = 8x³- 343

8x³ + 3(4x²)(-7) + 3(2x)(49) + (-7)³ = 8x³- 343

8x³ - 84x² + 294x - 343 = 8x³- 343

LS ≠ RS

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Tomtit [17]
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The formula is 2(wl+hl+hw)

Now all we have to do is substitute in our values and solve.

2(wl+hl+hw)=
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4 0
3 years ago
150 seconds is >, <, or = 3 minutes
kap26 [50]

Answer:

150 seconds< 3 minutes

Step-by-step explanation:

a minute is 60 seconds; 60×3 =180

180 seconds is greater than 150 seconds

4 0
3 years ago
Read 2 more answers
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stiks02 [169]

Answer:

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Step-by-step explanation:

8 x 3(1/2) = 28 cups

28 / 12 = 2 (1/3) cups

3 0
3 years ago
Identify an equation in point-slope form for the line perpendicular to y =3/4x -4 that passes through (-1, 7).
PilotLPTM [1.2K]

Answer:

y - 7 = -4/3(x + 1)

Step-by-step explanation:

<u>Given</u>

  • y =3/4x -4
  • (-1, 7)

<u>Convert to point slope form</u>

y - y1 = m(x - x1)

m: represents what the slope is

y - 7 = -4/3(x + 1)

<u>Distribute -4/3</u>

-4/3 * x = -4/3x

-4/3 * 1 = -4/3

y - 7 = -4/3x - 4/3

<u>Add seven in both sides</u>

21/3 -4/3 = 17/3

y = -4/3x + 17/2

<u>Answer</u>

linear equation: y = -4/3x + 17/2

point-slope form: y - 7 = -4/3(x + 1)

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3 years ago
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gladu [14]

Answer:

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