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2 years ago

Jorge wants to write 4/5 as a sum of unit fractions

2 answers:

8 0

A unit fraction is a fraction where the denominator is one, so the easiest way to write 4/5 as a sum of unit fractions is to use 1/5.
So the answer would be 1/5+1/5+1/5+1/5.
Add up all the numerators and put that over their like denominators to get 4/5!

erica [24]2 years ago

8 0

Answer:

$\frac{1}{5}+\frac{1}{5}+\frac{1}{5}+\frac{1}{5}$

Step-by-step explanation:

we know that

A unit fraction is a fraction with a numerator equal to $1$

In this problem we have

$\frac{4}{5}$

rewrite as a sum of unit fractions

$\frac{4}{5}=4*\frac{1}{5}=\frac{1}{5}+\frac{1}{5}+\frac{1}{5}+\frac{1}{5}$

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A committee of 9 members is voting on a proposal. Each member casts a yea or nay vote. On a random voting basis, what is the pro

dsp73

Answer:

The required probability is $P(x)=\frac{9}{128}$ or $P(x)=0.0703125$ .

Step-by-step explanation:

Consider the provided information.

A committee of 9 members is voting on a proposal. Each member casts a yea or nay vote. On a random voting basis,

The probability of yea or nay vote is equal, = $\frac{1}{2}$

So, we can say that $p=q=\frac{1}{2}$

Use the formula: $P(x)=\binom{n}{x}p^xq^{n-x}$

Where n is the total number of trials, x is the number of successes, p is the probability of getting a success and q is the probability of failure.

We want proposal wins by a vote of 7 to 2, that means the value of x is 7.

Substitute the respective values in the above formula.

$P(x)=\binom{9}{7}(\frac{1}{2})^7(\frac{1}{2})^{9-7}$

$P(x)=\frac{9!}{7!2!}(\frac{1}{2})^7(\frac{1}{2})^{2}$

$P(x)=\frac{8\times9}{2}\times(\frac{1}{2})^9$

$P(x)=\frac{4\times9}{2^9}$

$P(x)=\frac{9}{2^7}$

$P(x)=\frac{9}{128}$ or $P(x)=0.0703125$

Hence, the required probability is $P(x)=\frac{9}{128}$ or $P(x)=0.0703125$ .

4 0

2 years ago

Reynaldo rode his bike 2 miles north and 3 miles east. Which equation should he use to find the distance, d, that takes him dire

kotykmax [81]

Answer:

The first one, 2 square+ 3 squared= d squared

Step-by-step explanation:

The theory for finding the hypotenuse of a triangle is:

$a^{2} + b^{2} = c^{2}\\or\\(2)^{2}+(3)^{2}=d^{2}$

7 0

3 years ago

Can someone please tell me why we write a number as 'difference' in math?

uranmaximum [27]

Answer:

We need to do difference so we can have how many numbers differ between the 2 numbers

Step-by-step explanation:

For example: 5-2=? We want to know what is the difference between the number which is 3 hope I explained it the best I can!!

8 0

2 years ago

Need help asap!! No links please!!! I will give brainliest to best answer. Don't answer if you don't know!

Olin [163]

Answer:

3/4 students (75/100)

Step-by-step explanation:

in total there are 100 students. 75 of them either like sports or works.

6 0

2 years ago

Christian reads 14 book every 23 week. How many books does Christian read per week? 16 38 223 6

Drupady [299]

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Divide by 2 to get 1/3 of the week:

1/4 / 2 = 1/8

Multiply by 3 to get the full week:

1/8 x 3 = 3/8

Thus your answer is B. 3/8

Have A Nice Day ❤

Stay Brainly! ヅ

- Ally ✧

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8 0

3 years ago