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3 years ago

F(x) = x2 + 3x g(x) = 2x – 5 Find f (x) + g(x)

Mathematics

1 answer:

AVprozaik [17]3 years ago

3 0

Answer:

Step-by-step explanation:

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Which of these equations are in slope-intercept form?

maxonik [38]

Answer:

y = mx + b

Step-by-step explanation:

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2 years ago

Here is a graph of the equation

Rudik [331]

Answer:

(2,6) is the answer of this question

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3 years ago

A veterinarian wants to know if pit bulls or golden retrievers have a higher incidence of tooth decay at the age of three. The v

BigorU [14]

Answer: B) [-0.0332,0.1332]

Step-by-step explanation: <u>Confidence</u> <u>Interval</u> is an interval where we can be a percentage sure the true mean is.

The confidence interval for a difference in population proportion is calculated following these steps:

First, let's find population proportion for each population:

$p_{1}=\frac{30}{120}=0.25$

$p_{2}=\frac{32}{160}=0.2$

Second, calculate standard deviation for each proportion:

$\sigma_{1}=\sqrt{\frac{0.25(0.75)}{120} } = 0.0395$

$\sigma_{2}=\sqrt{\frac{0.2(0.8)}{160} } = 0.0316$

Now, we calculate standard error for difference:

$SE=\sqrt{\sigma_{1}^{2}+\sigma_{2}^{2}}$

$SE=\sqrt{0.0395^{2}+0.0316^{2}}$

SE = 0.0505

The z-score for a 90% CI is 1.645.

Then, confidence interval is

$p_{1}-p_{2}$ ± z-score.SE

$0.25-0.2$ ± $1.645(0.0505)$

0.05 ± 0.0831

The limits of this interval are:

inferior: 0.05 - 0.0831 = $-0.0332$

superior: 0.05 + 0.0831 = 0.1332

The 90% confidence interval for the difference in the population proportion of pit pulls and golden retrievers is $[-0.0332,0.1332]$ .

8 0

3 years ago

Doris needs to purchase AT LEAST 40 party decorations. The Party Palace charges $0.50 per decorative streamer and $0.25 per ball

Lana71 [14]

Try going for B because do 8 times 0.50 and 0.25 times 33 = to 12.25

4 0

2 years ago

PQ=20,RS=20 and the measure of ARC PT= 35 Find the measure of arc RS

Oksi-84 [34.3K]

If RS arc is = to the RS central angle then the RS arc would be 20 degrees, but if the RS is on the Circumference then the RS arc would be 40.

4 0

2 years ago