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3 years ago

8(3 – 2x)+ 4(3x – 2)=-16 Can someone solve for x? please

Mathematics

1 answer:

castortr0y [4]3 years ago

4 0

Answer: x = 8

Step-by-step explanation:

8(3-2x) + 4(3x - 2) = -16

expanding the equation , we have

24 - 16x +12x - 8 = -16

16 - 4x = -16

collecting the like terms

4x = 32

x = 32/4

x = 8

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Shirts are 5% off. The original price of one shirt is $15. What is the total cost, in dollars, of a shirt at the sale price, inc

Juliette [100K]

Answer:

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Step-by-step explanation:

$\frac{y}{15} :\frac{5}{100}$

y × 100 = 5 × 15

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100y ÷ 100 = 75 ÷ 100

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$15 - $0.75

$14.25

$\frac{y}{15} :\frac{10}{100}$

y × 100 = 10 × 15

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3 years ago

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3 years ago

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Tasya [4]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

A manufactured lot of buggy whips has 20 items, of which 5 are defective. A random sample of 5 items is chosen to be inspected.

Finger [1]

Answer:

$P(X=1)$

And using the probability mass function we got:

$P(X=1) = (5C1) (0.25)^1 (1-0.25)^{5-1}= 0.396$

Step-by-step explanation:

Previous concepts

The binomial distribution is a "DISCRETE probability distribution that summarizes the probability that a value will take one of two independent values under a given set of parameters. The assumptions for the binomial distribution are that there is only one outcome for each trial, each trial has the same probability of success, and each trial is mutually exclusive, or independent of each other".

Solution to the problem

For this cae that one buggy whip would be defective is $p = \frac{5}{20}=0.25$

Let X the random variable of interest, on this case we now that:

$X \sim Binom(n=5, p=0.25)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

And we want to find this probability:

$P(X=1)$

And using the probability mass function we got:

$P(X=1) = (5C1) (0.25)^1 (1-0.25)^{5-1}= 0.396$

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3 years ago

A contractor needs to buy nails to build a house. The nails come in small boxes and large boxes. Each small box has 150 nails an

densk [106]

Answer:

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9 large

Step-by-step explanation:

4200 ÷ 150 = 28 small

4200 ÷ 450 =9 large

7 0

3 years ago

8(3 – 2x)+ 4(3x – 2)=-16 Can someone solve for x? please​

8(3 – 2x)+ 4(3x – 2)=-16 Can someone solve for x? please