3 years ago

30 : 48 as a ratio in simplest form

Mathematics

2 answers:

jonny [76]3 years ago

7 0

10:16 is the ration in simplest form.

umka21 [38]3 years ago

5 0

The answer is either 10:16 or 5:8

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Krissi has $14 in the bank and earns $8 a day. John has 35$ and earns $5 a day when will krissi have more money?

SOVA2 [1]

Answer: 8 days

Step-by-step explanation:

K=14+8x

J=35+5x

when K=J they will have the same amount

14+8x=35+5x

8x=21+5x

3x=21

x=7 days until they have the same amount- 8 days until she has more

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2 years ago

Find the value of a:<br> a(x+3)<5x+15-x<br> a=

Vinil7 [7]

Answer:

a= 4x+15/x+3

Step-by-step explanation:

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3 years ago

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Dennis_Churaev [7]

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2 years ago

Solve the quadratic equation<br> (x+2)^2=1

bagirrra123 [75]

Answer: x = -1, -3

Step-by-step explanation:

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2 years ago

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(1+cos2x)/(1-cos2x) = cot^2x

sesenic [268]

We will turn the left side into the right side.

$\dfrac{1 + \cos 2x}{1 - \cos2x} = \cot^2 x$

Use the identity:

$\cos 2x = \cos^2 x - \sin^2 x$

$\dfrac{1 + \cos^2 x - \sin^2 x}{1 - ( \cos^2 x - \sin^2 x)} = \cot^2 x$

$\dfrac{1 - \sin^2 x + \cos^2 x }{1 - \cos^2 x + \sin^2 x} = \cot^2 x$

Now use the identity

$\sin^2 x + \cos^2 x = 1$ solved for sin^2 x and for cos^2 x.

$\dfrac{\cos^2 x + \cos^2 x }{\sin^2 x + \sin^2 x} = \cot^2 x$

$\dfrac{2\cos^2 x}{2\sin^2 x} = \cot^2 x$

$\dfrac{\cos^2 x}{\sin^2 x} = \cot^2 x$

$\cot^2 x = \cot^2 x$

8 0

2 years ago