3 years ago

What is the decimal equivalent of 4 over 9.?

Mathematics

1 answer:

nadya68 [22]3 years ago

5 0

The decimal equivalent of 4/9 is 0.44444444444

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Here's a super easy one. <br><br> What part of 72 is 36a?

skelet666 [1.2K]

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3 years ago

Suppose the mean SAT verbal score is 525 with a standard deviation of 100, while the mean SAT math score is 575 with a standard

Ipatiy [6.2K]

Answer:

The mean of the combined math and verbal scores is 1100, while the standard deviation is 141.

Step-by-step explanation:

Normal variables

Normal variables have mean $\mu$ and standard deviation $\sigma$

When we add normal variables, the combined mean is the sum of both means, and the standard deviation is the square root of the sum of both variances. The distribution is still normal.

In this question:

Verbal: $\mu_{V} = 525, \sigma_{V} = 100$ .

Math: $\mu_{M} = 575, \sigma_{M} = 100$

Combined:

$\mu = \mu_{V} + \mu_{M} = 525 + 575 = 1100$

$\sigma = \sqrt{\sigma_{V}^{2}+\sigma_{M}^{2}} = \sqrt{100^2 + 100^2} = 141$

The mean of the combined math and verbal scores is 1100, while the standard deviation is 141.

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3 years ago

If it’s 3:00 how long will it take before the hands are at a right angle again

UNO [17]

Answer:

4 hours

Step-by-step explanation:

3+1=4

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3 years ago

9/7-8/6= <br> Find the expresstions

Sergio039 [100]

Answer:
8/7 divided by 9/7=8/9

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2 years ago

Read 2 more answers

12. (r - 5)3 + r2 ifr= -3 and s= -4

Natasha2012 [34]

Answer:

-503

Step-by-step explanation:

the statement tell us:

(r - 5)^3 + r^2

r= -3

so we have:

(-3 - 5)^3 + (-3)^2

(-8)^3 + 9

-512+9 = -503

6 0

3 years ago