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olchik [2.2K]
3 years ago
15

a jug of orange juice is made by mixing 21 juice with 51 how many litres of water will be needed for 61 of juice?​

Mathematics
1 answer:
Fofino [41]3 years ago
8 0
Im just tryna get points
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2 point) what is the height of a d-heap that contains n elements? the height should be a function of n and
belka [17]
Assuming a d-heap means the order of the tree representing the heap is d.
Most of the computer applications use binary trees, so they are 2-heaps.

A heap is a complete tree where each level is filled (complete) except the last one (leaves) which may or may not be filled.

The height of the heap is the number of levels.  Hence the height of a binary tree is Ceiling(log_2(n)), for example, for 48 elements, log_2(48)=5.58.
Ceiling(5.58)=6.  Thus a binary tree of 6 levels contains from 2^5+1=33 to 2^6=64 elements, and 48 is one of the possibilities.  So the height of a binary-heap with 48 elements is 6.

Similarly, for a d-heap, the height is ceiling(log_d(n)).



6 0
3 years ago
Scores on an English test are normally distributed with a mean of 31.5 and a standard deviation of 7.3. Find the score that sepa
vladimir1956 [14]

If X is a random variable representing test scores, then the 41st percentile is the score x such that P(X\le x)=0.41. Transform X to the random variable Z that follows the standard normal distribution via X=31.5+7.3Z:

P(X\le x)=P\left(\dfrac{X-31.5}{7.3}\le\dfrac{x-31.5}{7.3}\right)=P\left(Z\le\dfrac{x-31.5}{7.3}\right)=0.41

The z-score for the 41st percentile is about -0.2275, so

\dfrac{x-31.5}{7.3}\approx-0.2275\implies\boxed{x\approx29.8}

6 0
4 years ago
Find the value of a/b!? can I have help?<br>​
MatroZZZ [7]

Answer:

1.5

Step-by-step explanation:

2.1/1.4 =1.5

(as the triangles are similar) i think this is the answer.

4 0
3 years ago
Pls help, Thx! Solve using the substitution method.<br> y = 2x - 4<br> 6x - 3y = 12
Kay [80]
Your answer would be 0 and -4. When you plug in 2x - 4 in for the y of the second equation and solve, you get x = 0 and y = -4.
6 0
3 years ago
deprina buys a large cup of coffe for $4.70 on her way to work everyday. if there are 24 workdays in the month, how much does de
disa [49]
$112.8 you multiple $4.70 and 24
8 0
4 years ago
Read 2 more answers
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