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3 years ago

What is -3/4 + 3/8? Thanks.

Mathematics

2 answers:

AURORKA [14]3 years ago

7 0

Answer:

$- \frac{3}{8}$

Step-by-step explanation:

First, we change both denominators to the LCM (lowest common multiple) which is 8.

$- \frac{3}{4} + \frac{3}{8} = - \frac{6}{8} + \frac{3}{8}$

Since the denominators are the same, we can add the numerators.

$\frac{ - 6 + 3}{8}$

$\frac{ - 3}{8}$

or it can be written as

$- \frac{3}{8}$

Inessa05 [86]3 years ago

7 0

Answer:

Step-by-step explanation:

-3/4+3/8=

-6+3/8=

-3/8

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Exhibit 5-9 Forty percent of all registered voters in a national election are female. A random sample of 5 voters is selected. R

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Answer:

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$X \sim Binom(n=5, p=0.4)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

So then the best answer for this cas would be:

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Step-by-step explanation:

Previous concepts

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Solution to the problem

Let X the random variable of interest "number of registered voters" in a random sample of n =5, on this case we now that:

$X \sim Binom(n=5, p=0.4)$

The probability mass function for the Binomial distribution is given as:

$P(X)=(nCx)(p)^x (1-p)^{n-x}$

Where (nCx) means combinatory and it's given by this formula:

$nCx=\frac{n!}{(n-x)! x!}$

So then the best answer for this cas would be:

b. the number of registered voters in the nation

8 0

4 years ago

Find the area of the shaded region.

earnstyle [38]

There are four parts of a circle, so you have to find out the area of the circle:-

10 cm=Radius

$10^{2}$ =100

$\pi$ =3.14

3.14*100=314 $cm^{2}$

Now, find the area of the square box:-

Since half the side of the square is 10 cm, the total length of one side is 2*10 which is 20 cm.

Area=S*S

=20*20=400 $cm^{2}$

Now subtract the area of the box from the area of the square:-

400-314= 86 $cm^{2}$

That is the area of the shaded part.

Happy to help you!

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3 years ago

Please help! Will be marking brainliest!

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Answer:

integer and rational

Step-by-step explanation:

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3 years ago

Can't wrap my head around this problem. :-[

alexandr1967 [171]

Remark

The five is after the decimal point. The 10 in that form is tenths. It represents a number in the denominator. So you would write it as 5/10 and say it as 5 tenths.

The answer is D.

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4 years ago

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