All categories

3 years ago

Can someone help with either question plz

Mathematics

1 answer:

AfilCa [17]3 years ago

4 0

Answer:

A = 204

Step-by-step explanation:

The formula for the area of a parallelogram is

A = bh

Data:

P = 60

h = AX =12

MX = 5

Calculation:

MA² = MX² + h² = 5² + 12² = 25 + 144 = 169

MA = √169 = 13

P = 2MA + 2MH = 2MA + 2(MX + HX) = 26 + 2(5 + HX) = 60

26 + 10 + 2HX = 60

36 + 2HX = 60

2HX = 24

HX = 12

b = MH = MX + HX = 5 + 12 = 17

A = bh =17 × 12 = 204

The area of the parallelogram is 204.

You might be interested in

A 12 ft long playground is marked off into 1/5 ft long section for a game,how many sections are there

Mrac [35]

So its 12 divided by 1/5 so
12 x 1= 12
1 x 5= 5

That is 12 over 5 and u will divide the numerator by the denominator to get 2.4
Dont know if thts exactly right bcuz its been a while since i learned this but i hope it helps

4 0

3 years ago

Which number is a prime number? 161. 151. 141. 171.

Scorpion4ik [409]

I think the answer is 151.

3 0

3 years ago

25% of the student's in Mrs.Brown's class like chocolate ice cream. How many students are in her class if 6 students like chocol

Katen [24]

Answer:

24 students.

Step-by-step explanation:

25% is 1/4 of 100.

6*4= The number of students.

7 0

3 years ago

Read 2 more answers

If Hillary can read 560 words in 7 minutes how many words can Hilary read in 1 minute

Elza [17]

To find the number of words she can read per minute, we would do 560 divide by 7 minutes

560/7 = 80 words per minute

Hope this helps

3 0

3 years ago

Read 2 more answers

Suppose that administrators at a large urban high school want to gain a better understanding of the prevalence of bullying withi

boyakko [2]

Answer:

lower limit =0.261

upper limit =0.369

Step-by-step explanation:

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".

Description in words of the parameter p

$p$ represent the real population proportion of people that have experienced bullying

X= 63 people in the random sample that have experienced bullying

n=200 is the sample size required

$\hat p=\frac{63}{200}=0.315$ represent the estimated proportion of people that have experienced bullying

$z_{\alpha/2}$ represent the critical value for the margin of error

The population proportion have the following distribution

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

Numerical estimate for p

In order to estimate a proportion we use this formula:

$\hat p =\frac{X}{n}$ where X represent the number of people with a characteristic and n the total sample size selected.

$\hat p=\frac{63}{200}=0.315$ represent the estimated proportion of people that they were planning to pursue a graduate degree

Confidence interval

The confidence interval for a proportion is given by this formula

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

For the 90% confidence interval the value of $\alpha=1-0.90=0.1$ and $\alpha/2=0.05$ , with that value we can find the quantile required for the interval in the normal standard distribution.