3 years ago

Part A: What is the value of 2x if 4x + 6 = 2x – 12?

Mathematics

1 answer:

xeze [42]3 years ago

8 0

Answer:

Step-by-step explanation:

A) 4x + 6 = 2x - 12

Subtract 6 from both sides

4x + 6 - 6 = 2x - 12 -6

4x = 2x - 18

Subtract 2x form both sides

4x - 2x = 2x - 18 - 2x

2x = -18

B) 24 = 6x - 18

6x - 18 = 24

6x - 6*3 = 24

6(x - 3) = 24

Divide both sides by 6

$\frac{6(x - 3)}{6}=\frac{24}{6}\\\\$

x - 3 = 4

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Step-by-step explanation:

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3 years ago

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levacccp [35]

Answer:

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Step-by-step explanation:

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2 years ago

Read 2 more answers

The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. a. Find the pro

Bogdan [553]

Answer:

Step-by-step explanation:

Let X be the length of pregnancy.

X is N(268, 15)

a) Prob of pregnancy lasting 307 days or longer

= P(X>307) = $P(Z>\frac{307-268}{15} )\\=P(Z>2.6)\\$

=0.5-0.4953

=0.0047

b) Lowest 2% is 2nd percentile

Z=-2.55

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= 229.75 days

If length of days >230 days then it is not premature.

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3 years ago

There are 63 female performers in a dance recital. the ratio of men to women is 5:9. how many men are in the dance recital?

valentinak56 [21]

In d ratio 5:9 which equals 5+9=14
the total female performers is 63
For men = 5/14*63=5/2*9
=45/2 =22.5
The men would be about 22.5 in the dance recital

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2 years ago

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gulaghasi [49]

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Step-by-step explanation:

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3 years ago