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ruslelena [56]
1 year ago
9

If m A. 25° B. 12.5° C. 37.5° D. 50°

Mathematics
1 answer:
chubhunter [2.5K]1 year ago
8 0
It’s A because the angles are acute and thoses are 25
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An office manager recorded the number of reams of paper that were used for a printer each month for six months: 15, 10, 25, 19,
Virty [35]
A) 
<span>10, 15, 17, 19, 25 </span>
<span>Min: 10 </span>
<span>Median: 17 </span>
<span>Max: 25 </span>

<span>lower Quartile: (10+15)/2 = 12.5 </span>
<span>upper Quartile: (19+25)/2 = 22 </span>

<span>b) </span>
http://imageshack.us/photo/my-images/22/... 

<span>c) </span>
<span>Mean: (10 + 15 + 17 + 19 + 25)/5 = 17.2 </span>

<span>[ ( 17.2 - 10 )^2 + ( 17.2 - 15 )^2 + ( 17.2 - 17 )^2 + ( 17.2 - 19 )^2 + ( 17.2 - 25 )^2 ] / 5 = 24.16 </span>

<span>√( 24.16 ) ≈ 4.92 </span>
<span>-------------- </span>
<span>4) </span>

<span>[ 4. . .-2 . . . -12 ------> 3R1 - 4R2 ----> R2 </span>
<span>3. . .-1 . . . -3 ] </span>

<span>[ 4. . .-2 . . . -12 ------> R1 - R2 ----> R1 </span>
<span>0. . .-2 . . . -24 ] </span>

<span>[ 4. . ..0 . . . .12 ------> R1/4 ----> R1 </span>
<span>0. . .-2 . . . -24 ] R2/-2 ----> R2 </span>

<span>[ 1. . ..0 . . . .3 </span>
<span>0. . .1 . . . 12 ] </span>

<span>x = 3 & y = 12 

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!
</span>
6 0
3 years ago
6 1/4% as a decimal?
sergij07 [2.7K]
First you have to change it into an improper fraction. The improper fraction would be 25/4% and to find the decimal you take the numerator divided by the denominator. So you would take 25÷4=6.25% The answer is 6.25%. Hope this helps
6 0
2 years ago
Suppose that replacement times for washing machines are normally distributed with a mean of 9.3 years and a standard deviation o
Ad libitum [116K]
The probability will be found as follows:
z-score is given by:
z=(x-μ)/σ
where:
mean-μ=9.3
standard deviation-σ=1.1 
but
σ/√n=1.1/√70=0.1315
thus the z-score will be:
z=(9.1-9.3)/0.1315
z=-1.5209
thus:
P(x<9.1)=P(z<-1.5209)=0.0643
7 0
3 years ago
Hello everyone can you answer this for me? What is A in the equation attached? Please and thank you.
lapo4ka [179]

Answer:

a = 6

Step-by-step explanation:

Hello!

Solve:

  • 4(3a - 4) = 56
  • 3a - 4 = 14          (factoring out 4)
  • 3a = 18               (adding 4 to both sides)
  • a = 6                   (dividing by 3)

Another way:

  • 4(3a - 4) = 56
  • 12a - 16 = 56        (distributive property)
  • 12a = 72               (moving like terms)
  • a = 6                    (dividing by 12)

Distributive Property of Multiplication:

The process of distributing the outside factor to the terms in the parenthesis.

Example:

4(3a - 4)\\\\4(3a) - 4(4)\\\\12a - 16

7 0
2 years ago
Read 2 more answers
Please help fast, I will mark BRAINLIEST 10. Find the rule. *
AURORKA [14]

Answer:

the answer to the question is y=x+2.

8 0
2 years ago
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