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2 years ago

Please tell me what to multiply by like the equations (finding the surface area)

Mathematics

2 answers:

Alborosie2 years ago

5 0

The top part of the shape would be (8×6)×1/2 to get that side. since it's the same as the bottom, multiply by that by two. so as of right now, you have two sides done (top and bottom sides). Next, lets do the side closest to us in the picture. since its a rectangle, all you have to do is 8×4. Add that to the answer we got earlier from the top and bottom sides. that gives us three sides done. we are going to do the one behind it next. That's a triangle as well. we will do 10×4 to get the area of that side. we will add that to get the total of 4 out of the 5 sides. Lastly, we will do the remaining side. 6×4. Add the answer of 6×4 to the earlier answer and that will get you the suface area of the whole shape. If you have follow up questions or wondering where i got each of the numbers from, comment and i will get back to you. Hope this helps and ignore any typos.

cupoosta [38]2 years ago

3 0

Length time weith time highth

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Identify the pair of angles shown in the figure. answers A. LINEAR PAIR B. COMPLEMENTARY C. CONGRUENT D. VERTICAL

posledela

Answer:

linear pair

Step-by-step explanation:

The two angles add together to form a straight line, which is 180 degrees.

These angles are supplementary, or a linear pair

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2 years ago

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In an effort to improve scores on college-entrance exams, the principal at a large high school chooses 35 students

denpristay [2]

Using the t-distribution, it is found that the test statistic for the hypotheses test is given by:

$t = \frac{-1.75 - 0}{\frac{7.12}{\sqrt{35}}}$

<h3>What are the hypotheses tested?</h3>

At the null hypotheses, it i tested if the mean difference remains the same, that is:

$H_0: \mu = 0$

At the alternative hypotheses, it is tested if it has decreased, hence:

$H_a: \mu < 0$ .

<h3>What is the test statistic?</h3>

The test statistic is given by:

$t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}$

The parameters are:

$\overline{x}$ is the sample mean.

$\mu$ is the value tested at the null hypothesis.

s is the standard deviation of the sample.

n is the sample size.

The parameters are given as follows:

$\overline{x} = -1.75, s = 7.12, n = 35$ .

Hence the test statistic is given by:

$t = \frac{\overline{x} - \mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{-1.75 - 0}{\frac{7.12}{\sqrt{35}}}$

More can be learned about the t-distribution at brainly.com/question/16162795

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1 year ago

How is the rangeof a set of data different from a IQR

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It is defined as the difference between the largest and smallest values in the middle 50% of a set of data<span>. To compute an </span>interquartile range<span> using this definition, first remove observations from the lower quartile. Then, remove observations from the upper quartile.</span>

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2 years ago

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A school band gives a year-end concert. It is held in a 400-seat auditorium. Each concert ticket sells for $10, and 85% of the t

bazaltina [42]

Answer: $3,400

Step-by-step explanation:

There are 400 seats in the auditorium which means that there are 400 tickets to be sold.

85% of these tickets are sold. The number of tickets sold is:

= 85% * 400

= 340 tickets were sold.

Each ticket sells for a total of $10.

The amount of money made from ticket sales is therefore:

= No. of tickets sold * price of ticket

= 340 * 10

= $3,400

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2 years ago

A dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly as

mina [271]

Answer:

Step-by-step explanation:

Given that a dairy scientist is testing a new feed additive. She chooses 13 cows at random from a large population of cows. She randomly assigns nold = 8 to get the old diet, and nnew = 5 to get the new diet including the additive.

From the data given we get the following

N Mean StDev SE Mean

Sample 1 8 43 5.1824 1.832

Sample 2 5 73 21.0832 9.429

df = 11

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b) Enclosed

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d) Test statistic= -3.1233

(because of unequal variances we use that method)

95% confidence interval = ( -56.6676 , -3.3324 )

p value <0.05 our alpha

So reject null hypothesis.

The two means are statistically significantly different.

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3 years ago