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3 years ago

If f(x) = 2x – 6 and g(x) = x – 2x2, find each value. f(h + 9)

Mathematics

1 answer:

Zigmanuir [339]3 years ago

5 0

Answer:

Solution for If f(x) = 2x – 6 and g(x) = x – 2x2, find each value. f(2)

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In a company, 55% of the workers are men . If 1800 people work for the company who aren't men , how many workers are there i

madreJ [45]

Answer:

4000 people id.k any other method

Step-by-step explanation:

55% = men

100-55=45

45% = 1800 (not men)

divide both by 45

1% = 40

times both by 55

55% = 2200 men

2200 + 1800 = 4000

3 0

2 years ago

The lengths of lumber a machine cuts are normally distributed with a mean of 106 inches and a standard deviation of 0.3 inch. (

Vinvika [58]

Answer:

a) $P(X>106.11)=P(\frac{X-\mu}{\sigma}\frac{106.11-106}{0.3})=P(z>0.37)$

And we can find this probability with the complement rule:

$P(z>0.37)=1-P(z$

b) $z =\frac{106.11- 106}{\frac{0.3}{\sqrt{44}}}= 2.431$

And if we use the z score we got:

$P(z>2.431) =1-P(z$

Step-by-step explanation:

Let X the random variable that represent the lengths of a population, and for this case we know the distribution for X is given by:

$X \sim N(106,0.3)$

Where $\mu=106$ and $\sigma=0.3$

Part a

We are interested on this probability

$P(X>106.11)$

And we can use the z score formula given by:

$z=\frac{x-\mu}{\sigma}$

And using this formula we got:

$P(X>106.11)=P(\frac{X-\mu}{\sigma}\frac{106.11-106}{0.3})=P(z>0.37)$

And we can find this probability with the complement rule:

$P(z>0.37)=1-P(z$

Part b

For this case we select a sample of n =44 and the new z score formula is given by:

$z=\frac{x-\mu}{\frac{\sigma}{\sqrt{n}}}$

And if we find the z score we got:

$z =\frac{106.11- 106}{\frac{0.3}{\sqrt{44}}}= 2.431$

And if we use the z score we got:

$P(z>2.431) =1-P(z$

6 0

3 years ago

An internet service provider uses the function R = 3 log(a + 2) + 15 to relate R, the sales revenue from hosting websites, to a,

elena55 [62]

Answer:

a=10R−153−2

Step-by-step explanation:

3 0

3 years ago

8. If 30 cents out of every 1 dollar goes to taxes and the rest is net income, what's the

aniked [119]

Answer:

D. 3:7

Step-by-step explanation:

1 dollar = 30 cents tax + 70 cents net income

<u>The ratio of taxes to net income:</u>

30 : 70 =
3 : 7

Correct choice is D

4 0

2 years ago

Read 2 more answers

Simplify 16a divided by 4ab

zimovet [89]

Answer:

4b^-1

Step-by-step explanation:

16a/4 = 4a

4a/a = 4

4/b = 4b^-1

5 0

3 years ago

Read 2 more answers