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4 years ago

Which expression is equal to (3x +1)(4x – 1)?

Mathematics

1 answer:

ella [17]4 years ago

3 0

Answer:

Step-by-step explanation:

(3x + 1) ( 4x - 1)

Expand

3x ( 4x - 1) +1( 4x - 1)

12x² - 3x + 4x - 1

12x² + x - 1

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How do you factor -5a^9+20a^7

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Factor the polynomial:: -5a^7 (a+2) (a-2).

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4 years ago

What is the complement of the supplement of 130 degrees?

Brut [27]

Answer:

50°

Step-by-step explanation:

180° - 130° = 50°

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3 years ago

Solve each equation for given variable<br> 12 - 4i= -8

gayaneshka [121]

ANSWER: I = 5

STEP BY STEP EXPLANATION:

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3 years ago

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The weights of certain machine components are normally distributed with a mean of 8.04 g and a standard deviation of 0.08 g. Fin

NISA [10]

Answer:

The bottom 3 is separated by weight 7.8896 g and the top 3 is separated by weight 8.1904 g.

Step-by-step explanation:

We are given that

Mean, $\mu=8.04 g$

Standard deviation, $\sigma=0.08g$

We have to find the two weights that separate the top 3% and the bottom 3%.

Let x be the weight of machine components

$P(Xx_2)=0.03$

$P(X$

=0.03

From z- table we get

$P(Z1.88)=0.03$

Therefore, we get

$\frac{x_1-8.04}{0.08}=-1.88$

$x_1-8.04=-1.88\times 0.08$

$x_1=-1.88\times 0.08+8.04$

$x_1=7.8896$

$\frac{x_2-8.04}{0.08}=1.88$

$x_2=1.88\times 0.08+8.04$

$x_2=8.1904$

Hence, the bottom 3 is separated by weight 7.8896 g and the top 3 is separated by weight 8.1904 g.

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3 years ago

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Kazeer [188]

Answer:

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Step-by-step explanation:

When taking the square root of m^6, you can make 3 pairs.

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4 years ago

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