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Westkost [7]
3 years ago
14

Find the rate of interest per annum when 1. P= 900 T= 2 years S.l. = 90

Mathematics
1 answer:
Bas_tet [7]3 years ago
6 0

Answer:

5% p.a will rate of interest

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An SRS of 450 450 high school seniors gained an average of ¯ x = 20 x¯=20 points in their second attempt at the SAT Mathematics
maria [59]

Answer: (15.47, 24.53)

Step-by-step explanation:

We know that the confidence interval for population mean is given by :_

\overline{x}\pm z^*\dfrac{\sigma}{\sqrt{n}}

, where n= sample size.

\sigma = standard deviation.

\overline{x}= sample mean.

z*= Critical value.

Given : n= 450

\overline{x}=20

\sigma=49

Critical value for 95% confidence = z*=1.96     [From z-value table]

Then, the 95% confidence interval will be :-

20\pm (1.96)\dfrac{49}{\sqrt{450}}

\approx 20\pm (1.96)(2.31)

\approx 20\pm 4.53

=(20-4.53,\ 20+4.53)=(15.47,\ 24.53)

Hence, the 95% confidence interval for the mean change in score μ μ in the population of all high school seniors. : (15.47, 24.53)

3 0
3 years ago
Find the product.
prohojiy [21]

Answer:

A. -14 B.-57 C.-14 D.-25

(I USED MY BRAIN SO IT MIGHT BE WRONG)

3 0
3 years ago
Read 2 more answers
Plz help me with this binary division whith full process/explanation 1001010 ÷ 101​
aivan3 [116]

Answer:

Step-by-step explanation:

Its like doing a long division with base 10 numbers:

           1110    <----------- Quotient

101)1001010

        101

         1000

            101

               111

                101

                  100

So the answer is 1110 remainder 100.

We can confirm this by converting to decimal numbers

1001010 = 74 and 101 = 5.

74 / 5 = 14 remainder 4.

3 0
2 years ago
4/y+2=10/5y solve for y
pantera1 [17]

Answer: y=−1 or y=2

Step-by-step explanation:

8 0
2 years ago
At which points are the equations y = x- + 3x + 2 and y = 2x + 3 approximately equal?
jarptica [38.1K]

Select all the correct locations on the graph. At which points are the equations y = x2 + 3x + 2 and y = 2x + 3 approximately equal? 2.

4 0
2 years ago
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