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
34kurt
3 years ago
14

Help please!!!!!!!!!!!!!

Mathematics
1 answer:
fiasKO [112]3 years ago
5 0

Answer:

<QPR = 98.5 degrees

Step-by-step explanation:

a line = 180 degrees

7x + 4 + 9x - 40 = 180

16x - 36 = 180

16x = 216

x = 13.5

<QPR = 7x + 4 = 7(13.5) + 4 = 98.5

You might be interested in
Write five expressions that are equivalent to 20x+100
Phoenix [80]
4(5x+25)
5(4x+20)
10(2x+10)
2(10x+50)
20(x+5)

hope this helps
4 0
3 years ago
I need this answered please
TiliK225 [7]
The answers are

1: False
2: True
3: True
4: False
4 0
2 years ago
7 - 12c = 43 show work and check plz
Svetradugi [14.3K]
The answer is -3

-12c = 43 - 7
-12c = 36
÷ -12 ÷-12
c = -3
4 0
3 years ago
The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. Th
Mila [183]

Answer:

The calculated t-value is t=0.47.

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>"Americans typically eat quickly and do not spend time enjoying their meal. A researcher plans to test if those trained in mindfulness will take more time to enjoy their meal (that is, they will spend more time eating than the general population). The general population spends an average of 68 minutes per day combined eating their three meals. The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. The sample mean for those trained in mindfulness equals 74; the SS = 150. What is the calculated t-value? Round your answer to two decimal places."</em>

The degrees of freedom are (n-1)=(16-1)=15

The standard deviation is:

s=\sqrt{\frac{SS}{n-1}}=\sqrt{\frac{150}{16-1}}=\sqrt{10}=3.16

The t-value can be calculated as:

t=\frac{M-\mu}{\sigma/\sqrt{n}} =\frac{74-68}{3.16/\sqrt{16}} \\\\t=\frac{6}{3.16*4}=\frac{6}{12.64}= 0.47

4 0
3 years ago
Find the range and interquartile range for the data represented by the box plot.
Anarel [89]

<u>Given</u>:

Given that the data are represented by the box plot.

We need to determine the range and interquartile range.

<u>Range:</u>

The range of the data is the difference between the highest and the lowest value in the given set of data.

From the box plot, the highest value is 30 and the lowest value is 15.

Thus, the range of the data is given by

Range = Highest value - Lowest value

Range = 30 - 15 = 15

Thus, the range of the data is 15.

<u>Interquartile range:</u>

The interquartile range is the difference between the ends of the box in the box plot.

Thus, the interquartile range is given by

Interquartile range = 27 - 18 = 9

Thus, the interquartile range is 9.

3 0
3 years ago
Read 2 more answers
Other questions:
  • Help , least to greatest
    12·1 answer
  • I have a question for yall, im doing a sample work in geometry and its like this
    8·1 answer
  • 5 2/3 +3 3/4= <br><br> (Please also explain your thinking.)<br><br> Thanks! :)
    7·2 answers
  • 54 is 150% of what number?
    11·2 answers
  • Y4 = 2x − 1 is this a straight line?
    13·1 answer
  • Is 42 a factor of 9 yes or no
    12·1 answer
  • The expression 0.8w + 3.6 factored is
    10·2 answers
  • Please help and explain ( Brainliest for answer!)
    14·1 answer
  • Pls help I cant do this
    13·2 answers
  • Which input value produces the same output value for
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!