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mel-nik [20]
3 years ago
14

The sum of 4 and y divided by 5 equal to 9. Find the value of y.​pls a better solution

Mathematics
1 answer:
rosijanka [135]3 years ago
6 0

Answer:

y=41

Step-by-step explanation:

Let us start by writing an equation. <em>4 plus y divided by 5 equals to 9</em> :

\frac{4+y}{5}=9

Great! Now let us solve for the variable, <em>y</em>, by isolating the terms:

4+y=45\\y=41

<em>I hope this helps! Let me know if you have any questions :)</em>

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Can someone please explain how to do these?
Pani-rosa [81]

Answer:

<u>First question answer:</u> The limit is 69

<u>Second question answer:</u> The limit is 5


Step-by-step explanation:

For the first limit, plug in x=8 in the expression (9x-3), that's the answer for linear equations and limits.

So we have:

9x-3\\9(8)-3\\72-3\\69

The answer is 69


For the second limit, if we do same thing as the first, we will get division by 0. Also indeterminate form, 0 divided by 0. Thus we would think that the limit does not exist. But if we do some algebra, we can easily simplify it and thus plug in the value x=1 into the simplified expression to get the correct answer. Shown below:

\frac{x^2+8x-9}{x^2-1}\\\frac{(x+9)(x-1)}{(x-1)(x+1)}\\\frac{x+9}{x+1}

<em>Now putting 1 in x gives us the limit:</em>

\frac{x+9}{x+1}\\\frac{1+9}{1+1}=\frac{10}{2}=5

So the answer is 5

3 0
3 years ago
For a group of 100 people, compute(a) the expected number of days of the year that are birthdays of exactly 3 people.(b) the exp
Scilla [17]

Answer:

Step-by-step explanation:

Leaving leap years, a year contains 365 days.

For a group of 100 people, each person is independent of the other and probability of any day being his birthday has a chance of

\frac{1}{365}

a) Probability that  exactly 3 people have same birthday = \frac{1}{365^3}

Each day is independent of the other

And hence no of days having exactly 3 persons birthday out of 100 persons is binomial with n = 365 and p = \frac{1}{365^3}

Expected value of days = np = \frac{1}{365^2}

b) Distinct birthdays is binomail with p =1/365 and n = 365

Hence

expected value = np =1

4 0
4 years ago
4) A random sample of students at Westcott Elementary were asked how many siblings they had. The following data was collected: 0
netineya [11]
A) 0
B) 6
C) middle number, or middle 2, averaged, so 3
D) 1
E) 4
F) 6-0 = 6
6 0
3 years ago
Given a circle with a circumference of 10cm, which equation shows how the relationship between a circumference and its diameter
sweet-ann [11.9K]

Answer:

D

Step-by-step explanation:

Multiply the circumference by the diameter which is D

3 0
3 years ago
I already know dis but what I want to know if u do. what is the difference between a prime number and a composite ​
Lynna [10]

Answer:

The opposite of prime numbers are composite numbers. A composite number is a positive  natural l number that has at least one positive divisor other than one or itself. The number 1 is not a prime number by definition - it has only one divisor.

Step-by-step explanation:

5 0
3 years ago
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