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Sliva [168]
2 years ago
11

The principal of a school claims that 30 % of grade 3 pupils stay in the playground after their classes. A survey among 500 grad

e 3 pupils revealed that 150 of them stay in the playground after their classes. Use 99% confidence to conduct a test of proportions.
No unrelated answers or links or you will be reported. Thanks​
Mathematics
1 answer:
ycow [4]2 years ago
5 0

Answer:

A survey among 500 grade 3 pupils revealed that 150 of them stayin the playground after their classes. Use 95% confidence to conduct a test of proportion. 1 1.

Step-by-step explanation:

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Completely factor the following expression t^2+4tv+4^2
VashaNatasha [74]
Here is all I got for you. From the starting expression to the simplest one.
t^2 + 4tv + 4^2 =
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3 years ago
Solve the given inequality. Describe the solution set using the set-builder or interval notation. Then, graph the solution set o
Korolek [52]

Answer:

B

Step-by-step explanation:

10(10m+6)<=12        

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100m     <=12-60

100m    <=-48

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This says values for m that are less than or equal to -.48

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6 0
3 years ago
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Which equation represents a line with a slope of -2?
tekilochka [14]

y= mx+b

slope is also m

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3 years ago
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The shorter leg of a right triangle is two less than the hypotenuse. The longer leg is one less than the hypotenuse. Find all th
Marina86 [1]

Answer:

x = 5

Step-by-step explanation:

using the Pythagorean theorem:

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reduce:

2x²-6x+5 = x²

subtract x² from each side:

x²-6x+5 = 0

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x=5

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