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3 years ago

What is the area of a triangle.

Mathematics

2 answers:

Firdavs [7]3 years ago

8 0

Answer:

The area of a triangle is the base times height times 1/2. Please mark brainliest!!!!

ololo11 [35]3 years ago

6 0

Answer:

1/2 x b x h

Step-by-step explanation:

The area of a triangle is

A half x base x height

= 1/2 x b x h

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PLSSS HELP IF YOU TURLY KNOW THISS

Lelu [443]

Answer:

8(4+2x)=16

distributive property

32+16x=16

subtract

16x=-16

divide

x=-1

7 0

3 years ago

A golf charges $18 for a package including the full 18- hole course . The course also sells buckets of gold balls for$20 each .

Bogdan [553]

Answer:

Well ummmm, what are the answers and the question?

Step-by-step explanation:

3 0

3 years ago

Factor the expression using the GCF. A. 2(4a + 8c) B. 4(2a + 4c) C. 8(a + 2c) D. 16( 12 a + c) Not multiple choice

dimulka [17.4K]

Note: The expression is missing. Consider the expression is $8a+16c$ .

Given:

The expression is

$8a+16c$

To find:

Factor form of the given expression by using GCF.

Solution:

We have,

$8a+16c$

Factors of each term:

$8a=2\times 2\times 2\times a$

$16c=2\times 2\times 2\times 2\times c$

The common factors are 2, 2 and 2. So,

$GCF(8a+16c)=2\times 2\times 2$

$GCF(8a+16c)=8$

Taking out the greater common factor (GCF) in the given expression, we get

$8a+16c=8(a+2c)$

Therefore, the required expression is $8(a+2c)$ and the correct option is C.

5 0

3 years ago

Fireworks on July4th.A local news outlet reported that 56% of 600 randomly sampled Kansasresidents planned to set off fireworks

rosijanka [135]

Answer:

The margin of error is 3.97 percentage points.

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence interval $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

$n = 600, p = 0.56$

95% confidence interval

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.56 - 1.96\sqrt{\frac{0.56*0.44}{600}} = 0.5203$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.56 + 1.96\sqrt{\frac{0.56*0.44}{600}} = 0.5997$

The margin of error is the upper limit subtracted by the proportion, or the proportion subtracted by the lower limit. They are the same values.

So the margin of error is 0.5997 - 0.56 = 0.56 - 0.5203 = 0.0397 = 3.97 percentage points.

6 0

3 years ago

During the semester, all the students in a statistics class kept track of the number of mailings they received from a predatory

Verdich [7]

Answer:

The first step on this case is order the dataset on increasing way, and after do this we got:

11 14 15 16 17 17 18 19 21

We have a sample size of n =9

And in order to find the 75th percentile we need to find the position for this percentile with this formula:

$n_{75} = 0.75* 9= 6.75\approx 7$

So then we can conclude that the 75th percentile would be approximately on the 7 position of the dataset ordered and we got:

$x_{75} = 18$

Step-by-step explanation:

For this case we have the following data:

16 17 11 21 15 14 17 18 19

The first step on this case is order the dataset on increasing way, and after do this we got:

11 14 15 16 17 17 18 19 21

We have a sample size of n =9

And in order to find the 75th percentile we need to find the position for this percentile with this formula:

$n_{75} = 0.75* 9= 6.75\approx 7$

So then we can conclude that the 75th percentile would be approximately on the 7 position of the dataset ordered and we got:

$x_{75} = 18$

8 0

3 years ago