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Hitman42 [59]
3 years ago
13

What is the solution to proportion 3/m=12/15

Mathematics
1 answer:
Anastasy [175]3 years ago
3 0
The awnser is m equals 15 over four I hope this helps u if so could you mark me the brainliest awnser
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Rectangle prisms have 6 flat surfaces.
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4. Your class is going to elect a President and Vice President. In how many ways can 2 people be elected if your class has 30 st
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Simplify without using the calculator or the sin tables.​
katovenus [111]

Answer:

1/8

Step-by-step explanation:

sin²(π/8) − cos⁴(3π/8)

Use power reduction formulas:

1/2 (1 − cos(2×π/8)) − 1/8 (3 + 4 cos(2×3π/8) + cos(4×3π/8))

Simplify:

1/2 (1 − cos(π/4)) − 1/8 (3 + 4 cos(3π/4) + cos(3π/2))

1/2 (1 − √2/2) − 1/8 (3 + 4 (-√2/2) + 0)

1/2 − √2/4 − 1/8 (3 − 2√2)

1/2 − √2/4 − 3/8 +√2/4

1/2 − 3/8

1/8

7 0
3 years ago
One number is four times another number. The sum of their reciprocals is 1/4 . What is the answer
Yakvenalex [24]
Using the information from the question, one can construct two equations:

4 z = x  ...  (1)

\frac{1}{z}  +   \frac{1}{x}   ... (2)

by substituting (1) into (2) to find x

\frac{1}{z} +  \frac{1}{4z}  =   \frac{1}{4}

\frac{5}{4z}  =   \frac{1}{4}

\frac{5}{4z}  =   \frac{1}{4}  

\frac{4z}{5}  =   \frac{4}{1}

\frac{4z}{1}  =   \frac{20}{1}

z =   \frac{20}{4}

⇒ z = 5

By substituting value of z into (1)

⇒ 4 (5) = x

⇒ x = 20

Thus the two numbers are 5 & 20 



4 0
3 years ago
Read 2 more answers
Divide. Reduce the answer to lowest terms 2 1/9 ÷ 3 1/3
aleksandrvk [35]

Answer:

I am pretty sure the answer is 19/30

Step-by-step explanation:

If u turn 2 1/9 ÷ 3 1/3 into improper fractions u will get 19/9 Divided by 10/3

Then u do the butterfly. So this would be 9 x 10 =90 and 19 x 3 =57 so this is what it looks like 57/90 and that can be simpflyed into 19/30. Becasue 3 x 19 = 57 and 3 x 30 = 90

4 0
3 years ago
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