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Klio2033 [76]
3 years ago
11

Need this answer asap giveing 20 points!

Mathematics
1 answer:
katen-ka-za [31]3 years ago
6 0

Answer:

ok um what’s the question?

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→<br> Enter a formula using k to connect the two<br> variables.<br> y is proportional to x³
DiKsa [7]

Directly proportional to x.

<h3>What is propotionality?</h3>
  • In algebra, proportionality is the equality of two ratios.
  • A and B are in the same ratio as C and D in the formula a/b = c/d.
  • When one of a proportion's four quantities is unknown, a proportion is often built up to resolve the word problem.
  • By multiplying one numerator by the opposing denominator and equating the result to that of the other numerator and denominator, the equation can be solved.
  • Any relationship that has a constant ratio is said to be proportionate. For instance, the ratio of proportionality is the average number of apples per tree, and the amount of apples in a crop is proportional to the number of trees in the orchard.

Acc to our question-

  • If two variables' ratios (yx)
  • (x and y) have the same value as a constant (k=yx)
  • therefore the ratio's variable (y) in the numerator is the sum of the other variable and the constant (y=k:x).
  • With a proportionality constant of k, it is claimed that y is directly proportional to x in this instance.

Hence,Directly proportional to x.

learn morr about propotionality click here:

brainly.com/question/24868934

#SPJ13

3 0
1 year ago
Which term of the AP . 27, 24, 21, .... is zero?
dmitriy555 [2]

Answer: 27,24,21....

d=24-27=-3 a=27

let nth term=0

a+(n-1)d=0

27+(n-1)-3=0

(n-1)-3=-27

n-1=9

n=10

Step-by-step explanation:

3 0
3 years ago
Multiple Choice: A prism and a pyramid have identical bases and heights. The volume of the prism is: Twice as large as the pyram
Natali [406]

Answer:

<h3>Three times as large as the pyramid's volume</h3>

Step-by-step explanation:

Let the volume of prism be Vp

Let the Volume of pyramid be Vy

Vp = Base Area * Height .... 1

Vy = Base * Height/3 ....2

From 2;

Vp = BH/3

BH = 3Vy

Since Vp = BH, then;

Vp = 3Vy

This shows that the volume of prism is three times as large as pyramids volume

8 0
3 years ago
A simple random sample of electronic components wil be selected to test for the mean lifetime in hours. Assume that component li
Serjik [45]

Answer:

189 components must be sampled.

Step-by-step explanation:

We have that to find our \alpha level, that is the subtraction of 1 by the confidence interval divided by 2. So:

\alpha = \frac{1 - 0.99}{2} = 0.005

Now, we have to find z in the Ztable as such z has a pvalue of 1 - \alpha.

That is z with a pvalue of 1 - 0.005 = 0.995, so Z = 2.575.

Now, find the margin of error M as such

M = z\frac{\sigma}{\sqrt{n}}

Assume that component lifetimes are normally distributed with population standard deviation of 16 hours.

This means that \sigma = 16

How many components must be sampled so that a 99% confidence interval will have margin of error of 3 hours?

n components must be sampled.

n is found when M = 3. So

M = z\frac{\sigma}{\sqrt{n}}

3 = 2.575\frac{16}{\sqrt{n}}

3\sqrt{n} = 2.575*16

\sqrt{n} = \frac{2.575*16}{3}

(\sqrt{n})^2 = (\frac{2.575*16}{3})^2

n = 188.6

Rounding up:

189 components must be sampled.

4 0
3 years ago
More math help please!
Nata [24]
AS we know that:

V=SA*h

And we have the volume and we can calculate the SA,,,

So that, we can conclude:
h= \frac{V}{SA} = \frac{323.5}{\pi (7)^2} =2.1015~~in

Are you satisfied?




3 0
3 years ago
Read 2 more answers
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