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3 years ago

Question in the picture!!

Mathematics

2 answers:

ipn [44]3 years ago

6 0

Answer:

1. 24%

2. 30%

3. 30%

Step-by-step explanation:

1. 100%/25= 4% 4%*6=24%

2. 100%/50= 2% 2%*15=30%

3. 100%/40=2.5% 2.5%*12= 30%

olga_2 [115]3 years ago

4 0

1) 6/25 is .24 or 24%
2) 15/50 is .3 or 30%
3) 12/40 is .3 or 30%

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Which of the following is an example of simple harmonic motion?

pshichka [43]

For apex the answer is D

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3 years ago

Colin invests £1100 into his bank account.

lutik1710 [3]

Answer:

165 intreset 1265 total

Step-by-step explanation:

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1100*.05*3

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3 years ago

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National statistics show that 23% of men smoke and 18.5% of women smoke. A random sample of 175 men indicated that 45 were smoke

NeTakaya

Answer:

98% C.I. = [-0.1270, 0.0994]

Step-by-step explanation:

Here

p1= proportion of men smokers

p1= 45/175= 0.2571

p2= proportion of women smokers

p2= 42/155= 0.2709

1) Choose the significance level ∝= 0.02

2) The formula for confidence interval is

(p1^- p2^)- z ∝/2sqrt( p1^(1-p1^)/n1 + ( p2^(1-p2^)/n2))

and

(p1^- p2^) z ∝/2sqrt( p1^(1-p1^)/n1 + ( p2^(1-p2^)/n2))

3) The z value is 2.05

4) Calculations:

(p1^- p2^)- z ∝/2sqrt( p1^(1-p1^)/n1 + ( p2^(1-p2^)/n2))

Putting the values

= 0.2571-0.2709)(-2.05) sqrt ( 0.2571(1-0.2571)/175+ 0.2709(1-0.2709)/155)

=-0.1270 ( using calculator)

And

(p1^- p2^)z ∝/2sqrt( p1^(1-p1^)/n1 + ( p2^(1-p2^)/n2))

Putting the values

= 0.2571-0.2709)(2.05) sqrt ( 0.2571(1-0.2571)/175+ 0.2709(1-0.2709)/155)

=0.0994 ( using calculator)

and Putting ± 2.05 in the confidence interval formula we get limits (-0.1270, 0.0994)

6 0

3 years ago

Please someone help me solve this i dpnt know the answer

kozerog [31]

<h2>Answer With Explanation:</h2>

Firstly, let's start with <XOZ: =55°

We know that <ZOQ is 70° and angles on a line add up to 180° so we do 180-70=110 110 divided by 2 = 55 so the 2 angles (XOZ & XOP are 55)

Secondly, <OMN, <MON & <ONM = All are 60°

These 2 angles are joined to create an equilateral triangle which always adds up to 180°

So, there are 3 points to this triangle, therefore we divide 180 by 3 which is 60. The angles are 60°

Thirdly, <QON: =55°

This angle lies on the line XON which needs to add up to 180°

As we worked out before, <XOZ was 55°

So, <ZOQ was already given as 70°

We then do 55+70=125 then 180-125=55°

<QON is 55°

(I'm only in Grade 9 LOL)

4 0

2 years ago

-14, -6, 2, 0,... Is it geometric

marysya [2.9K]

Answer:

No it is not.

Step-by-step explanation:

Reason.

For geometric: common ratio r should be equal

r = T2/T1 = T3/T2 but is not true here as -6/-14 is not equal to 2/-6

5 0

3 years ago

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