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Cloud [144]
3 years ago
9

24 is what percent of 78?

Mathematics
1 answer:
Aliun [14]3 years ago
3 0

Answer:

30.77

Step-by-step explanation:

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A city planner designs a park that is a quadrilateral with vertices at J(-3,1), K(1,3), L(5,-1), and M(-1,-3). There is an entra
Ksivusya [100]
The Quadrilateral is JKLM, 

let M_{JK}, M_{KL}, M_{LM}, M_{JM}, be the midpoints of JK, KL, LM and JM respectively.

---------------------------------------------------------------------------------------------------------

Given any 2 point P(m,n) and Q(k,l),<span>

the coordinates of the midpoint of the line segment PQ are given by the formula:

M_{PQ}=( \frac{m+k}{2} ,&#10;\frac{n+l}{2}), </span>

-------------------------------------------------------------------------------------------------

thus the coordinates of points M_{JK}, M_{KL}, M_{LM}, M_{JM},

are as follows:

M_{JK}= (\frac{-3+1}{2}, \frac{1+3}{2})=(-1,2), \\\\M_{KL}= (\frac{1+5}{2}, \frac{3-1}{2}=(3,1), \\\\M_{LM}= (\frac{5-1}{2}, \frac{-1-3}{2})=(2, -2),\\\\ M_{JM}= (\frac{-3-1}{2}, \frac{1-3}{2})=(-2,-1)


------------------------------------------------------------------------------------------------

The distance between any 2 points P(a,b) and Q(c,d) in the coordinate plane, is given by the formula:<span>

 |PQ|= \sqrt{ (a-c)^{2} + (b-d)^{2}&#10;}</span>

------------------------------------------------------------------------------------------------

thus the distances connecting the opposite entrances can be calculated as follows:


|M_{JK},M_{LM}|= \sqrt{ (-1-2)^{2} + (2-(-2))^{2} }= \sqrt{9+16}=5

|M_{KL}M_{JM}|= \sqrt{ (3-(-2))^{2} + (1-(-1))^{2}}= \sqrt{25+4}= \sqrt{29}=5.39


Thus the total distance of the paths joining the opposite entrances is 

5+5.39 units = 50 m + 53.9 m = 104 m (rounded to the nearest meter)


Answer: 104 m



8 0
3 years ago
In a given binomial distribution, there are 625 trials, and the probability of success is p =0.29. What is the variance?
Shkiper50 [21]

Answer:

128.69.

Step-by-step explanation:

The variance is np(1 - p)

= 625*(0.28) * 0.71

= 128.69.

3 0
3 years ago
Can someone help me out on this math problem?
denis-greek [22]

1 ,3, 1

The first one is 1 the second is 3 and the last one is 1

8 0
2 years ago
Help me with this!!!!
Lelechka [254]

Answer:

You didn't show the whole question.

Step-by-step explanation:

4 0
3 years ago
Miller opens a savings account by making a deposit of $249.45. Every week, he deposits another $31.75 in the account. which expr
svp [43]

Answer:

To find the total you would need to multiply the 31.75 by w to get the total amount of his weekly deposits, then that would get added to the initial amount of 249.45

The equation would be 249.45 + 31.75w

Step-by-step explanation:

Brainliest?

6 0
3 years ago
Read 2 more answers
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