All categories

3 years ago

Please help. Need to understand it. At least give an answer.

Mathematics

2 answers:

worty [1.4K]3 years ago

6 0

Answer:

A, 3 8/33.

Step-by-step explanation:

x = 3.242424.....

100x = 324.2424.....

If we subtract, we get 99x = 324.2424... - 3.2424.... = 321.

99x = 321

x = 321 / 99 = 107 / 33 = 3 8/33

cluponka [151]3 years ago

3 0

Answer:

The asnwer is the first one:

Step-by-step explanation:

You do this

x = 3.242424242424

100x = 324.24242424242424242424

-x

= 329/99

3-24/99

3 8/33

You might be interested in

{(1,2),(3,4),(5,6),(7,8),(9,0)}

Jobisdone [24]

The domain is (1,3,5,7,9) and the range is (2,4,6,8,0)

4 0

3 years ago

Best Method using system of equations x=4y+8 2x-8y=-3

Mkey [24]

In this case, since one equation is in the form of x=, substitution would be best for this problem. Simply plug in 4y + 8 in place of x in the second equation, solve for y, then plug that value into the first equation to find x.

8 0

3 years ago

Read 2 more answers

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

denis-greek [22]

Answer:

______________________________________________________

TRIGONOMETRY IDENTITIES TO BE USED IN THE QUESTION :-

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

SOME GENERAL TRIGNOMETRIC FORMULAS :-

$\sin \alpha = \frac{1}{cosec \: \alpha }$ or $cosec \: \alpha = \frac{1}{\sin \alpha }$

$\cos \alpha = \frac{1}{\sec \alpha }$ or $\sec \alpha = \frac{1}{\cos \alpha }$

______________________________________________________

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)

3 0

2 years ago

Which logaritnmic equation equivalent to the exponential equation below 5c=125

nataly862011 [7]

I assume you meant to write 5^c = 125. The equivalent logarithmic expression for this would be ㏒₅125=c.

3 0

3 years ago

Marge cuts 16 pieces of tape. each piece is 3/8 inches long. how much tape did she use

hoa [83]

16 x 3/8 so 16/1 x 3/8 = 48/8. 48 divided by 8 is 6. So 6 inches.

3 0

3 years ago