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3 years ago

5

In order to conduct a certain experiment, four students are randomly selected from a class of 20. how many different groups of f

our stdents are possible

1 answer:

chubhunter [2.5K]3 years ago

8 0

20x4=80
i am assuming this is correct this is how i learned just take all numbers in equation and multiply by each other

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Given: PRST square

yuradex [85]

There is no difficulty in this problem until you construct the figures. How can we do it is shown in the attached picture. After drawing PRST, from the point P, we can draw PMKD and later we can complete PMCT as a result. From this picture, we can see that the side of PMCT is also a. Then, the area of this square is $A=a^{2}$

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3 years ago

The ratio of the measures of the three angles in a tangle 3107. Find the measures of the angles and write them in size order,

N76 [4]

Answer:

27, 90 and 63

Step-by-step explanation:

Given

Ratio of triangle sides

$Ratio = 3 : 10 : 7$

Required:

The length of each side

Triangles in a triangle add up to 180.

The side with ratio 3 is:

$S_1 = \frac{3}{3 + 10 + 7} *180$

$S_1 = \frac{3 *180}{20}$

$S_1 = \frac{540}{20}$

$S_1 = 27$

The side with ratio 10 is:

$S_2 = \frac{10}{3 + 10 + 7} *180$

$S_2 = \frac{10 *180}{20}$

$S_2 = \frac{1800}{20}$

$S_2 = 90$

Lastly:

The side with 7 as its ratio

$S_3 = \frac{7}{3 + 10 + 7} *180$

$S_3 = \frac{7 *180}{20}$

$S_3 = \frac{1260}{20}$

$S_3 = 63$

Hence, the angles are: 27, 90 and 63

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3 years ago

What is 80% of 25 help me

sladkih [1.3K]

(i have to make this 20 characters long)
80% of 25 is 20

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3 years ago

1. A plumber cut a pipe into 6 identical pieces. Each piece measures 17.4 feet long.

iragen [17]

Answer:

104.4 for A.

Step-by-step explanation:

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3 years ago

Please help me I don’t understand this at all

ZanzabumX [31]

A, C, and D are the answers.

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3 years ago

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