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Scrat [10]
3 years ago
6

Find the percentage change from 40 to 60.

Mathematics
1 answer:
aliina [53]3 years ago
5 0

Answer:

50%

thats the answer

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A certain natural number is not divisible by 7. Can it be divisible by 14, explain why or why not
Elanso [62]
For a number to be divisible by 14 it needs to be both divisible by 7 and 2 which are factors of 14. Every time you have a number (x) to check if it is divisible by some larger number you find the factor of that larger number and check is the x divisible by both.

Answer: it cannot be divisible by 14.
3 0
4 years ago
The director of the library believes that 14% of the library's collection is checked out. If the director is right, what is the
Ksivusya [100]

Answer: 0.2643

Step-by-step explanation:

Let p be the population proportion and \hat{p} be the sample proportion .

As per given question , we have

p=0.14\\\\ \hat{p}=0.13\\\\ n=478

z-score : \dfrac{\hat{p}-p}{\sqrt{\dfrac{p(1-p)}{n}}}

z=\dfrac{0.13-0.14}{\sqrt{\dfrac{0.14(1-0.14)}{478}}}\\\\=-0.630087269176\approx-0.63

The required probability ( using z-table ):-

P(z

Hence, the probability that the proportion of books checked out in a sample of 478 books would be less than 13% = 0.2643

5 0
4 years ago
How are the triangles similar pleaseee help I’ll give you BRAINLIEST
Bad White [126]

Answer:

SSS

Step-by-step explanation:

Only sides are given, not angles, so you know it's side-side-side

7 0
3 years ago
Find the value of x and y
hram777 [196]

Answer:

  • x = 12
  • y = 20

Step-by-step explanation:

There is nothing in this diagram to suggest any particular values for x and y.

__

If we assume the figure is intended to be a kite, symmetrical about its horizontal diagonal, then each segment is congruent to the one above it.

  x = 12

  y = 20

4 0
3 years ago
A snail moves at a speed of 3.484 inches per minute. If the snail keeps moving at this rate, about how
saveliy_v [14]

Answer:

18.402488 inches

Step-by-step explanation:

all you have to do is multiply the speed and minutes

3.484 x 5.282 = 18.402488

Dont forget to round if the question asks for it.

4 0
3 years ago
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