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
Lelu [443]
3 years ago
12

Could someone explain me question 9 thank you

Mathematics
1 answer:
nordsb [41]3 years ago
4 0
R1 / r2 = sqrt(m2)  / sqrt(m1)  Notice the numbering system. If the 2 is on the denominator for the r, then it will be in the numerator for the m. You must substitute carefully.

r1 / r2 = sqrt(30) / sqrt(12) 
r1 / r2 = sqrt(2)*sqrt(3)(sqrt(5) / sqrt(3) sqrt(4) but sqrt(4) = 2.

ri / r2 = sqrt(2)* sqrt(3)*sqrt(5) / sqrt(3) * 2 Now you can cancel out sqrt(3)
r1 / r2 = sqrt(2)*sqrt(5) / 2

r1 / r2 = sqrt(10)/2 <<<< answer
B <<< answer. Notice that they put sqrt(2) and sqrt(5) together again.


You might be interested in
What is the value of the underline digit?<br><br> 14.097
weqwewe [10]

Answer:14.097

Step-by-step explanation:

6 0
2 years ago
At a cake sale, David bought 3 cakes and paid $10.50. At the same price, Lisa bought 4 cakes and 8 cookies and paid $14.80. What
Olin [163]

Price of a Cake

10.5/3= 3.5

1 Cake = $3 and 5 cents, 3.5

Price of a cookie

3.5*4=14

14 out of 14.80 was the cost of 4 cakes

Which leaves us with 0.8

8/0.8= 0.1

The Price of 1 cookie is 0.1

1 Cake: 3.5

1 Cookie: 0.1

7 0
3 years ago
How do I solve 3(x+5)=39
azamat
3(x+5)=39

3 * x + 3 * 5 = 39

3x + 15 = 39

3x = 39 - 15

3x= 24
x = 8


4 0
2 years ago
Read 2 more answers
If the ratio was 0.5 in to 1.5, what is the actual length of the car
Sonja [21]

Answer:

Actual length = 36

Step-by-step explanation:

<u>0.5 inches</u> = <u>12 inches</u>

    1.5         =      x

0.5x = 18      Solve for x

x = 36

I hope this helped and please mark me as brainliest!

7 0
2 years ago
The area of a rectangular rug is 28 m2. The length is 7 m.<br> What is the width?
hoa [83]

Answer:

4 i think

Step-by-step explanation:

6 0
3 years ago
Other questions:
  • Failure to adequately plan for retirement can result in
    6·1 answer
  • What is the volume of a cube shaped box with edges 6 cm. in length
    5·1 answer
  • What is the radius of the incircle of a regular hexagon with a side of 20 cm ?
    6·1 answer
  • Determine which pair of points has a positive slope.
    13·1 answer
  • PLEASE HELP FAST!!!! 20 POINTS!!!!<br> 80 + 10x = 0 + 20x<br> Show work, please!!!
    10·2 answers
  • Find the measure of angle E
    5·1 answer
  • Which ordered pair is a solution of the equation?
    15·2 answers
  • Graph the solution of the inequality on a number line.<br> 2(x – 3) – 5x
    13·1 answer
  • Tony wants to put a total of at least x stamps in 3 albums. If he puts 42 stamps in the first album and 58 stamps in the second
    7·2 answers
  • I need help with b and c please and thank you!!
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!