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melomori [17]
3 years ago
5

Write a ratio as a fraction in simpliest form : 12 girls in a class of 28 students

Mathematics
2 answers:
Marina86 [1]3 years ago
7 0
You first start with the ratio:
12:28

Now you see what goes in it, seems like 2, because it's an even number.
12 / 2 = 6
24 / 2 = 12

6:12 can still be divided.
6 / 2 = 3 
12 / 2 = 6

3:6 is the final product, now we have to turn it into a fraction.

3 is half of 6 so we could turn it into a one and a half fraction.
1/2

Our final product will be 1/2.

Hope this helps!~
agasfer [191]3 years ago
5 0
12/28 is equal to 3/7 (divide both the numerator and the denominator by the highest common factor).
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HELP ME ASAP.. MY TEACHER IS ASKING FOR THE ANSWER ​
Solnce55 [7]

Answer:

a) 10.7 cm

b) 11.6 cm

c) 29.9 cm²

Step-by-step explanation:

a) sin(α)/a = sin(β)/b

sin(∠BCD)/BD = sin(DBC)/DC

sin(41°)/BD = sin(55°)/13.4

BD = 13.4*sin(41°)/sin(55°) = 10.73 cm ≈ 10.7 cm

b) From ΔBCD , ∠BDC = 180-(41+55) = 84°

∠ABD and ∠BDC are alternate interior angles, so they are congruent, and

∠ABD = ∠BDC  = 84°

AD²= AB² + BD² - 2*AB*BD*cos (∠ABD) =

= 5.6² + 10.73² - 2*5.6*10.73*cos(84°) = 133.93 cm²

AD =√(133.93) ≈11.6 cm

c) Area(ADB) = (1/2)*AB*BD*sin(∠ABD)=(1/2)*5.6*10.73*sin(84°) ≈ 29.9 cm²

5 0
3 years ago
Find the center and radius of the circle with the given equation. Then graph
MissTica

Answer:

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