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Stolb23 [73]
3 years ago
7

ΔABC is an isosceles triangle with AB = BC = 6 units, D and E are the midpoints of AB and BC respectively.The length of AC is 8

units. The length DE is__units.
Mathematics
1 answer:
shutvik [7]3 years ago
4 0
4 units. DE=1/2 AC.....
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Helpp mee pleaseeeeeeee
mario62 [17]

Answer:

52

Step-by-step explanation:

2((8)+(12)+(6))

2(8+12+6)

2(26)

52

8 0
2 years ago
A basketball player participates in a one-and-one free throw situation. The player has a 70% free throw percentage. What is the
julia-pushkina [17]

Answer:

The average number of points this player will get in 100 one-and-one free throw situations is 70.

Step-by-step explanation:

For each free throw, there are only two possible outcomes. Either the player makes it, or he does not. The probability of the player making a free throw is independent of other free throws. So we use the binomial probability distribution to solve this question.

Binomial probability distribution

Probability of exactly x sucesses on n repeated trials, with p probability.

The expected value of the binomial distribution is:

E(X) = np

70% free throw percentage.

This means that p = 0.7

What is the average number of points this player will get in 100 one-and-one free throw situations?

This is E(X) when n = 100. So

E(X) = np = 100*0.7 = 70

The average number of points this player will get in 100 one-and-one free throw situations is 70.

3 0
3 years ago
Read 2 more answers
A rectangular patio has a length of 12 1/2 feet and an area of 103 1/8 square feet. What is the width of the patio?
Rina8888 [55]
Length of the rectangular patio = 12 1/2 feet
                                                  = 25/2 feet
Area of the rectangular patio = 103 1/8 square feet
                                               = 825/8 square feet
Let us assume the width of the rectangular patio = x feet
 Then
Area of the rectangular patio = Length * Width
825/8 = (25/2) * x
25x/2 = 825/8
25x = (825 * 2)/8 feet
25x = 825/4 feet
x = 825/(4 * 25) feet
   = 33/4 feet
   = 8 1/4 feet
So the width of the rectangular patio is 8 1/4 feet. I hope the procedure is clear enough for you to understand.
6 0
3 years ago
A plant grew 3 1/4 inches over a 6 1/2 month period.what was the average monthly growth rate for the plant
Solnce55 [7]

Answer:

0.5 inches per a month

Step-by-step explanation:

you turn them to a decimal to make them easier and then divide them to get the answer.

5 0
3 years ago
Out of students appeared in an examination 75% passed in English, 55%. passed in Mathematics, 5% failed in both subjects and 21
rusak2 [61]

Based on the percentage that passed English and those who passed Mathematics and those who failed and passed both, the total number of students who appeared in the examination are 60 students.

The number of students who passed only in Math are 12 students.

<h3>What number of students sat in the exam?</h3>

This can be found as:

= Total who passed English only + Total who passed Math only + Total who failed both + Total who passed both

Assuming the total is n, the equation becomes:

n = 0.75n - 21 + 0.55n - 21 + 21 + 0.05n

n = 1.35n - 21

21 = 0.35n

n = 21 / 0.35

= 60 students

The number who passed mathematics only is:

= (60 x 55%) - students who passed both

= 33 - 21

= 12 students

Find out more on Venn diagrams at brainly.com/question/24581814

#SPJ1

4 0
1 year ago
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