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3 years ago

11

I need help for number 5

1 answer:

yKpoI14uk [10]3 years ago

8 0

Answer: 1

Step-by-step explanation:

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At the nursery, the ratio of red flowers to yellow flowers is 5:4. If there are 28 yellow flowers, how many red flowers are ther

grin007 [14]

35 red flowers

28/4=7
7x5=35

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3 years ago

Tresset [83]

-13>-5x+2>-28 subtract 2 from all expressions

-15>-5x>-30 divide each expression by -5

Be sure to reverse direction of signs when you divide/multiply by a negative value!

3<x<6

So the "graph" will be a infinitely high plane, or area, contained between the two vertical lines x=3 and x=6

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Read 2 more answers

mixas84 [53]

-3x = -3 because you would multiply one of the equations by -1 to eliminate y.

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3 years ago

Cos (90-theta) • cosec90-theta) =tano. How?

denis-greek [22]

Answer:

<u>______________________________________________________</u>

<u>TRIGONOMETRY IDENTITIES TO BE USED IN THE QUESTION :-</u>

For any right angled triangle with one angle α ,

$\cos (90 - \alpha ) = \sin \alpha$ or $\sin(90 - \alpha ) = \cos\alpha$

$cosec \: (90 - \alpha ) = \sec\alpha$ or $\sec(90 - \alpha ) = cosec\:\alpha$

<u>SOME GENERAL TRIGNOMETRIC FORMULAS :-</u>

<u></u> $\sin \alpha = \frac{1}{cosec \: \alpha }$ or $cosec \: \alpha = \frac{1}{\sin \alpha }$

<u></u> $\cos \alpha = \frac{1}{\sec \alpha }$ or $\sec \alpha = \frac{1}{\cos \alpha }$

<u>______________________________________________________</u>

Now , lets come to the question.

In a right angled triangle , let one angle be α (in place of theta) .

So , lets solve L.H.S.

$\cos (90 - \alpha ) \times cosec(90 - \alpha )$

$=> sin\alpha \times \sec\alpha$

$=> \sin\alpha \times \frac{1}{\cos\alpha }$

$=> \frac{\sin\alpha }{\cos\alpha }$

$=> \tan\alpha$ = R.H.S.

∴ L.H.S. = R.H.S. (Proved)

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3 years ago

Two coins are knocked off a table at the same time by different forces. which coin will hit the ground first?

Anastasy [175]

They will land at the same time

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3 years ago