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densk [106]
3 years ago
13

The yearbook club had a meeting. The meeting had

Mathematics
1 answer:
blondinia [14]3 years ago
5 0
If 30 people is three fifths of the club, then you can divide 30 by 3 to find out how many people make up one fifth of the club. So, 10 people make up one fifth of the club.

30 + 20 (which is two more fifths of the club) = 50 people (the entire club)
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What would the correct word form be for the number 382
RUDIKE [14]

Answer:

Three hundred eighty two

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Prove that: [1 + 1/tan²theta] [1 + 1/cot² thata] = 1/(sin²theta - sin⁴theta]
Stels [109]

Step-by-step explanation:

<h3><u>Given :-</u></h3>

[1+(1/Tan²θ)] + [ 1+(1/Cot²θ)]

<h3><u>Required To Prove :-</u></h3>

[1+(1/Tan²θ)]+[1+(1/Cot²θ)] = 1/(Sin²θ-Sin⁴θ)

<h3><u>Proof :-</u></h3>

On taking LHS

[1+(1/Tan²θ)] + [ 1+(1/Cot²θ)]

We know that

Tan θ = 1/ Cot θ

and

Cot θ = 1/Tan θ

=> (1+Cot²θ)(1+Tan²θ)

=> (Cosec² θ) (Sec²θ)

Since Cosec²θ - Cot²θ = 1 and

Sec²θ - Tan²θ = 1

=> (1/Sin² θ)(1/Cos² θ)

Since , Cosec θ = 1/Sinθ

and Sec θ = 1/Cosθ

=> 1/(Sin²θ Cos²θ)

We know that Sin²θ+Cos²θ = 1

=> 1/[(Sin²θ)(1-Sin²θ)]

=> 1/(Sin²θ-Sin²θ Sin²θ)

=> 1/(Sin²θ - Sin⁴θ)

=> RHS

=> LHS = RHS

<u>Hence, Proved.</u>

<h3><u>Answer:-</u></h3>

[1+(1/Tan²θ)]+[1+(1/Cot²θ)] = 1/(Sin²θ-Sin⁴θ)

<h3><u>Used formulae:-</u></h3>

→ Tan θ = 1/ Cot θ

→ Cot θ = 1/Tan θ

→ Cosec θ = 1/Sinθ

→ Sec θ = 1/Cosθ

<h3><u>Used Identities :-</u></h3>

→ Cosec²θ - Cot²θ = 1

→ Sec²θ - Tan²θ = 1

→ Sin²θ+Cos²θ = 1

Hope this helps!!

7 0
2 years ago
Jacob’s daily tips this work week were $99, $78, $58, $91, $90, and $68. Is Jacob correct in thinking that the mean best represe
Neko [114]

Answer:

D. No, Jacob is not correct. The median amount he makes is $84.00 in a day.

Step-by-step explanation:

In this case, the mean is not the best measure of this data.

We can see that there is one value lower than the rest, $58.  This brings the mean down.

With the value of $58, the mean is $80.70.  If we were to take this value out, the mean would be $85.20, which is higher.

Since the mean is brought down by this value, we should use the median.  The median of this data set is $84.

6 0
3 years ago
Read 2 more answers
Please answer this question !! Will give brainliest to the best answer and 30 points !!
sergey [27]

Hi,

Get knowledge *throw math book at brain*

8 x 8 x 8 is 512 so its not a or b, add that to 6 times 6 and it equals d 546,

Answered by Britton have a nice day:)

8 0
3 years ago
Read 2 more answers
Kill’em Dead Pest Control needs to set out 5 roach motels per square yard. In a rectangular studio apartment that’s 7 yards by 4
laila [671]
5 roach motels per square yd

A = L * W
A = 7 * 4
A = 21 square yds

so if they set out 5 roach motels per square yd, then they need to set out :
5 * 21 = 105 roach motels <==
8 0
3 years ago
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