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2 years ago

Choose the correct written expression for 34 – (9 ÷ 3).

Mathematics

2 answers:

Mamont248 [21]2 years ago

8 0

Answer:

C) 34 minus the quotient of 9 and 3

Step-by-step explanation:

the parenthesis are around 9 and 3 so therefore you would have to subtract the quotient of 9 and 3 from 34.

brainliest pls

kumpel [21]2 years ago

7 0

Answer:

34 minus the quotient of 9 and 3

Step-by-step explanation:

I looked it up not gonna lie LOL

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How many acres of land are in a rectanglar parcel 234' * 878'

uysha [10]

An acre is 43,560 ft² because the customary system hates you.

Let's find out how many square feet the parcel is so we can convert it into acres.

The area of a rectangle is its base times its height.

A = bh
A = 234 ft * 878 ft
A = 205,452 ft²

Divide by 43,560.

A ≈ <span>4.7165 acres. (round as needed)</span>

7 0

3 years ago

A sample survey is designed to estimate the proportion of sports utility vehicles being driven in the state of California. A ran

mart [117]

Answer:

a) The 95% confidence interval would be given (0.070;0.121).

b) "increase the sample size n"

"decrease za/2 by decreasing the confidence"

Step-by-step explanation:

Notation and definitions

$X=48$ number of vehicles classified as sports utility.

$n=500$ random sample taken

$\hat p=\frac{48}{500}=0.096$ estimated proportion of vehicles classified as sports utility vehicles.

$p$ true population proportion of vehicles classified as sports utility vehicles.

A confidence interval is "a range of values that’s likely to include a population value with a certain degree of confidence. It is often expressed a % whereby a population means lies between an upper and lower interval".

The margin of error is the range of values below and above the sample statistic in a confidence interval.

Normal distribution, is a "probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean".

The population proportion have the following distribution

$p \sim N(p,\sqrt{\frac{\hat p(1-\hat p)}{n}})$

(a) Use a 95% confidence interval to estimate the proportion of sports utility vehicles in California. (Round your answers to three decimal places.)

The confidence interval would be given by this formula :

$\hat p \pm z_{\alpha/2} \sqrt{\frac{\hat p(1-\hat p)}{n}}$

For the 95% confidence interval the value of $\alpha=1-0.5=0.05$ and $\alpha/2=0.025$ , with that value we can find the quantile required for the interval in the normal standard distribution.

$z_{\alpha/2}=1.96$

And replacing into the confidence interval formula we got:

$0.096 - 1.96 \sqrt{\frac{0.096(1-0.096)}{500}}=0.070$

$0.096 + 1.96 \sqrt{\frac{0.096(1-0.096)}{500}}=0.121$

And the 95% confidence interval would be given (0.070;0.121).

We are confident (95%) that about 7.0% to 12.1% of vehicles in California are classified as sports utility .

(b) How can you estimate the proportion of sports utility vehicles in California with a higher degree of accuracy? (HINT: There are two answers. Select all that apply.)

For this case we just have two ways to increase the accuracy one is "increase the sample size n" since if we have a larger sample size the estimation would be more accurate. And the other possibility is "decrease za/2 by decreasing the confidence" because if we decrease the confidence level the interval would be narrower and accurate

7 0

3 years ago

What is 3gh 2 x 4g 3h 3

Alexus [3.1K]

Answer:

(3•22g4h5)

Step-by-step explanation:

Step 1: ((3gh2 • 4) • g3) • h3

Step 2: ((3•22gh2) • g3) • h3

Step 3: 3.1 h2 multiplied by h3 = h(2 + 3) = h5

Final answer: (3•22g4h5)

(IF THIS HELPED PLEASE GIVE BRAINLIEST OR RATE IT 5 STARS!)

5 0

3 years ago

What times what makes 23

TiliK225 [7]

8 times 3 equals 23 and that is one of the answers

5 0

3 years ago

Can someone pls help first gets brainilest

atroni [7]

It’s letter d

since m and n are parallel the measure of b will be equivalent to the angle 35 degrees

4 0

3 years ago