1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Romashka-Z-Leto [24]
3 years ago
5

Which equation represents: three times the difference of a number and five is nine

Mathematics
1 answer:
jolli1 [7]3 years ago
6 0
Answer would be: 3(x-5)= 9
You might be interested in
A physicist examines 25 water samples for nitrate concentration. The mean nitrate concentration for the sample data is 0.165 cc/
xz_007 [3.2K]

Answer:

The 80% confidence interval for the the population mean nitrate concentration is (0.144, 0.186).

Critical value t=1.318

Step-by-step explanation:

We have to calculate a 80% confidence interval for the mean.

The population standard deviation is not known, so we have to estimate it from the sample standard deviation and use a t-students distribution to calculate the critical value.

The sample mean is M=0.165.

The sample size is N=25.

When σ is not known, s divided by the square root of N is used as an estimate of σM:

s_M=\dfrac{s}{\sqrt{N}}=\dfrac{0.078}{\sqrt{25}}=\dfrac{0.078}{5}=0.016

The degrees of freedom for this sample size are:

df=n-1=25-1=24

The t-value for a 80% confidence interval and 24 degrees of freedom is t=1.318.

The margin of error (MOE) can be calculated as:

MOE=t\cdot s_M=1.318 \cdot 0.016=0.021

Then, the lower and upper bounds of the confidence interval are:

LL=M-t \cdot s_M = 0.165-0.021=0.144\\\\UL=M+t \cdot s_M = 0.165+0.021=0.186

The 80% confidence interval for the population mean nitrate concentration is (0.144, 0.186).

6 0
3 years ago
Divide 645 by 3 to get your answer
likoan [24]

Answer:

645/3 = 215

Step-by-step explanation:

You can use long division to find the answer.

6 0
3 years ago
i sell a jacket i bought for 200 dollars at a 20% increase. how much money will i make off of selling it
Ann [662]

Answer:

$40

Step-by-step explanation:

4 0
3 years ago
Any help on this pleasee anyone??
meriva
False, it would not make a right triangle
8 0
3 years ago
What is the mean absolute deviation of the following data set
tatuchka [14]

Answer:

4.32

Step-by-step explanation:

First, we have to find the mean of the data set.

16, 11, 9, 12, 11, 10, 10, 8, 15, 0, 2, 15, 14, 7, 11, 5, 14, 20, 3, 11, 13, 7, 0, 5, 21 all added together equals 250. 250 divided by 25 = 10. So 10 is the mean.

Now we have to find the absolute distances of each number from the mean.

16 - 10 = 6... 11 - 10 = 1... so on, giving us this -->

6, 1, 1, 2, 1, 0, 0, 2, 5, 10, 8, 5, 4, 3, 1, 5, 4, 10, 7, 1, 3, 3, 10, 5, 11

Finally, we have to find the mean of the distances (which is done by adding all the numbers above and dividing the sum by the number of values there are).

108 divided by 25 = 4.32.

So, 4.32 is the mean absolute deviation (MAD) of the following data set.

4 0
2 years ago
Other questions:
  • What is 1096782×67736
    6·1 answer
  • How long will it take Mario to jog 7,560 feet if he jogs 6 feet each second?
    12·1 answer
  • Can you give me an equation that equals to 31
    15·2 answers
  • Help meeeeeeeeeeeeeeeeeeeeeeeeeee
    8·1 answer
  • Bill rows his boat at 10 miles per hour. He rowed 20 miles down a stream and then rowed back to his starting point. The stream w
    5·2 answers
  • Use 3.14 for pi to estimate the area of a circle. The diameter is given. Round your answer to the nearest hundredth if necessary
    11·2 answers
  • Helpppppp it’s due in 30 minutes.
    11·1 answer
  • Suppose a pentagon graphed on a coordinate plane willundergo a dilation.Which of these is a true statement?
    15·2 answers
  • Cheese has holes.
    8·2 answers
  • If there are 7.5 gallons in every cubic foot, how many gallons of water are needed to fill a pool that is 50 feet long, 30 feet
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!