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3 years ago

Subtract. (9x² + 5x² + 5x – 3) - (8x - 2)

Mathematics

1 answer:

Afina-wow [57]3 years ago

5 0

Answer:

=14x² −3x −1

Step-by-step explanation:

simplifying step-by-step.

9x2+5x2+5x−3−(8x−2)

Distribute the Negative Sign:

=9x2+5x2+5x−3+−1(8x−2)

=9x2+5x2+5x+−3+−1(8x)+(−1)(−2)

=9x2+5x2+5x+−3+−8x+2

Combine Like Terms:

=9x2+5x2+5x+−3+−8x+2

=(9x2+5x2)+(5x+−8x)+(−3+2)

=14x2+−3x+−1

Answer:

=14x2−3x−1

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The cashier has been directed to sell an item for half off its regular price of$1.98.what is the sale price

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$1.98 divided by 2 is $0.99
So the sale price is $0.99

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3 years ago

A service center receives an average of 0.6 customer complaints per hour. Management's goal is to receive fewer than three compl

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Answer:

0.18203 = 18.203% probability that exactly four complaints will be received during the next eight hours.

Step-by-step explanation:

We have the mean during a time-period, which means that the Poisson distribution is used to solve this question.

In a Poisson distribution, the probability that X represents the number of successes of a random variable is given by the following formula:

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

In which

x is the number of sucesses

e = 2.71828 is the Euler number

$\mu$ is the mean in the given interval.

A service center receives an average of 0.6 customer complaints per hour.

This means that $\mu = 0.6h$ , in which h is the number of hours.

Determine the probability that exactly four complaints will be received during the next eight hours.

8 hours means that $h = 8, \mu = 0.6(8) = 4.8$ .

The probability is P(X = 4).

$P(X = x) = \frac{e^{-\mu}*\mu^{x}}{(x)!}$

$P(X = 4) = \frac{e^{-4.8}*4.8^{4}}{(4)!} = 0.18203$

0.18203 = 18.203% probability that exactly four complaints will be received during the next eight hours.

5 0

3 years ago

Write an equation in the form y=mx for the proportional relationship that passes through the points (2, -15) and (6, -45).

nydimaria [60]

Answer:

Y=-15/2x

Step-by-step explanation:

7 0

2 years ago

Find the measurement

xenn [34]

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$6z + 7 = 8z - 9$

$8z - 9 = 6z + 7$

Add sides 9

$8z - 9 + 9 = 6z + 7 + 9$

$8z = 6z + 16$

Subtract sides 6z

$- 6z + 8z = - 6z + 6z + 16$

$2z = 16$

Divide sides by 2

$\frac{2z}{2} = \frac{16}{2} \\$

$z = 8$

Thus ;

$NP = 8z - 9$

$NP = 8(8) - 9$

$NP = 64 - 9$

$NP = 64 - 4 - 5$

$NP = 60 - 5$

$NP = 55$

Done...

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6 0

3 years ago

Help me solve this pls

ddd [48]

Answer:

$\frac{x - 10}{8}$

Step-by-step explanation:

$\frac{3x}{8} - \frac{x + 5}{4}$

The common denominator of both fractions is 8. Therefore,, divide the denominator of each fraction, then multiply what you get by the numerator of each fraction.

Thus:

$\frac{1(3x) - 2(x + 5)}{8}$

$\frac{3x - 2x - 10}{8}$

$\frac{x - 10}{8}$

5 0

3 years ago