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ivolga24 [154]
3 years ago
9

Please help me ASAP!

Mathematics
2 answers:
spin [16.1K]3 years ago
7 0

Answer:

10

Step-by-step explanation:

2x+46+3x-6 = 90

5x + 40 = 90

5x = 50

x =10

melamori03 [73]3 years ago
4 0
The answer is 10 I think I’m right
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Eight percent of all college graduates hired by companies stay with the same company for more than five years. The probability,
Maurinko [17]

Answer:

0.1662 = 16.62% probability that exactly 2 will stay with the same company for more than five years

Step-by-step explanation:

For each graduate, there are only two possible outcomes. Either they stay for the same company for more than five years, or they do not. Graduates are independent. This means that we use the binomial probability distribution to solve this question.

Binomial probability distribution

The binomial probability is the probability of exactly x successes on n repeated trials, and X can only have two outcomes.

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

In which C_{n,x} is the number of different combinations of x objects from a set of n elements, given by the following formula.

C_{n,x} = \frac{n!}{x!(n-x)!}

And p is the probability of X happening.

Eight percent of all college graduates hired by companies stay with the same company for more than five years.

This means that p = 0.08

Sample of 11 college graduates:

This means that n = 11

The probability, rounded to four decimal places, that in a random sample of 11 such college graduates hired recently by companies, exactly 2 will stay with the same company for more than five years is: the absolute tolerance is +-0.0001

The tolerance means that the answer is rounded to four decimal places.

The probability is P(X = 2). So

P(X = x) = C_{n,x}.p^{x}.(1-p)^{n-x}

P(X = 2) = C_{11,2}.(0.08)^{2}.(0.92)^{11} = 0.1662

0.1662 = 16.62% probability that exactly 2 will stay with the same company for more than five years

4 0
3 years ago
Can you please help me on this it says fully simplify using only positive exponents 5x8y7/25x4y
dangina [55]

Answer:

1/5x^12 * y^8.

Step-by-step explanation:

((5x^8*y^7/25)x^4)(y)

=1/5x^12 * y^8.

4 0
2 years ago
10. There are 355 students at Median Middle School. If there 8% of the students were absent on Tuesday, how many students were a
Setler79 [48]

To solve this question, we simply need to divide the total amount of students by 8% to find out how many students were absent and how many were present.

However, we can't simply multiply it by 8%, so we need to turn that into a decimal.

8% - 0.08

<em>Multiply:</em>

<em>355 x 0.08</em>

<em>= 28.4</em>

<em>Round:</em>

<em>28 kids were absent</em>

<em>Subtract:</em>

<em>355 - 28</em>

<em>= 327</em>

<em />

<em>This means that </em><em>28 kids were absent</em><em>, and </em><em>327 kids were present</em><em>.</em><em> </em>

<em />

<em />

6 0
2 years ago
-5x= -15 solve for x
cricket20 [7]

Answer:x=3

Step-by-step explanation:

-5x=-15

divide by -5

x=3

7 0
3 years ago
Read 2 more answers
a local hamburger shop sold a combined total of 616 hamburgers and cheeseburgers on sunday. there were 66 moore cheeseburgers so
Ksju [112]

Answer:

242 Hamburgers,  374 Cheeseburgers

Step-by-step explanation:

Step 1: 616/2-66=242 Hamburgers

Step 2: 616-242=374 Cheeseburgers

Step 3: Check Work 242+374=616

4 0
3 years ago
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