All categories

2 years ago

Please Help!!!!!!! Emergency

Mathematics

1 answer:

Stolb23 [73]2 years ago

6 0

Answer:

15 + x

Step by step explanation

For Company X, the initial cost is 30 cents plus 5 cents per minute, so the expression would be 30 + 5x (x would represent minutes.

For Company Y, the initial cost is 15 cents plus 4 cents per minute, so the expression would be 15 + 4x (x would represent minutes.)

Then subtract the expression of Y from the expression of X to show the difference in value between Y and X.

So, 30 + 5x - (15 +4x)

Distribute the subtraction sign.

30 + 5x - 15 - 4x

Solve across.

15 + x

You might be interested in

Mum is 25 years older than her son Max, but she is 1 year younger than

In-s [12.5K]

Answer:

Step-by-step explanation:

8 0

2 years ago

Please help need a 100

aivan3 [116]

I'd have to say it's A. Please don't blame me if I'm wrong. :)

4 0

3 years ago

What is the y-intercept of 6x + 12y = 60

Musya8 [376]

Answer:

it means when x =0

so 6*0+12y=60

12y=60

y=5

Step-by-step explanation:

7 0

2 years ago

Read 2 more answers

Could some one help me

nalin [4]

Answer:

None of the above.

Step-by-step explanation:

It would come out to be 3r + t.

7 0

2 years ago

Read 2 more answers

Professors at a local university earn an average salary of $80,000 with a standard deviation of $6,000. The salary distribution

Sladkaya [172]

Answer:

d. It is at most 25 percent.

Step-by-step explanation:

According to Chebyshev's inequality, for a given number of standard deviations, k, no more than 1/k² can be more than k standard deviations from the mean. In this situation the amount of standard deviations from the mean of the upper and lower bound of salaries are:

$U=\frac{\$92,000-\$80,000}{\$6,000}=2\\L = \frac{\$80,000-\$68,000}{\$6,000}= 2$

For k = 2, applying Chebyshev's inequality:

$P( \$68,000 \leq X \leq \$92,000)= \frac{1}{2^2} = 0.25$

Therefore, at most 25% of the salaries are less than $68,000 or more than $92,000.

7 0

2 years ago