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Alecsey [184]
4 years ago
6

The water at the end of a pier was 28 meters deep at midnight. As the tide came in, the water depth increased at a rate of 0.012

meters per minute. Which equation can be solved to find t, the time in minutes it took the water depth to reach 30 meters?
(t/0.012) - 28 = 30
0.012t + 28 = 30
(t/0.012) + 28 = 30
0.012t – 28 = 30
Mathematics
1 answer:
Nastasia [14]4 years ago
4 0

Answer:

  0.012t + 28 = 30

Step-by-step explanation:

The depth starts at 28 meters. The amount of increase in t minutes will be 0.012t, so the total depth after t minutes is ...

  0.012t +28

We want to find when that is equal to 30, so the appropriate equation is ...

  0.012t +28 = 30

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Translate the following verbal expressions into
AleksAgata [21]

Answer:

16 + 4n

3(x - 8)

(5 × y) - 3

Step-by-step explanation:

16 increased by 4 times a number:

16 + 4n

Three times the difference of x and 8:

3(x - 8)

3 less than the product of 5 and y:

(5 × y) - 3

7 0
3 years ago
PLEASEEE HELPPPP!!!
natima [27]

Considering the desired result of the hypothesis test, we the closest mean time to 1.5 hours, hence the correct option is:

C. 1.6 hrs

<h3>What should be the mean?</h3>

The closer the mean is to the sample mean, the less likely we are to reject the null hypothesis.

In this problem, the sample mean is of 1.5 hours, hence, the closest value, considering the absolute value of the difference, is of 1.6 hours, hence option C is correct.

More can be learned about the test of an hypothesis at brainly.com/question/16313918

6 0
2 years ago
Find the measure of the angle HELP PLSSS URGENT!
Alecsey [184]

Answer:

It is 40 degrees

Step-by-step explanation:

The 2 lines, x and y are forming 90 degrees, and since we know that part of that complementary angle is 50 degrees, we would do:

50+x=90

-50    -50

-------------

x=40

8 0
3 years ago
Suppose a graduate program has sent acceptance letters to 45 applicants, but only has enough funding for 30 students. Let the st
gulaghasi [49]

Answer:

the probability that the graduate program will have enough funding for all student that join the program is 0.3653 (36.53%)

Step-by-step explanation:

since each student is independent on others the random variable X= x students of 45 applicants will join the program has a binomial probability distribution

P(X=x)= n!/[(n-x)!*x!]*p^x*(1-p)^x

where

n= total number of students= 45

p= probability that a student join the program= 0.7

x= number of students that join the program

then in order to have enough funding x should not surpass 30 students , then

P(X≤30)= ∑P(X) for x from 1 to 30 = F(30)

where F(30) is the cumulative probability distribution

then from binomial probability tables

P(X≤30)= F(30)= 0.3653 (36.53%)

therefore the probability that the graduate program will have enough funding for all student that join the program is 0.3653 (36.53%)

5 0
3 years ago
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lana [24]
(1-1/3)x*(1-1/5)=28 8/15x=28 x=52.5. Therefore, he had 52.5$before
6 0
3 years ago
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