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Nutka1998 [239]
3 years ago
13

Brainliest + points! Please HELP and explain

Mathematics
1 answer:
Papessa [141]3 years ago
5 0

Answer:

D

Step-by-step explanation:

The hypotenuse is x and the adjacent side to the given angle is 54

cos20° = \frac{adjacent}{hypotenuse} = \frac{54}{x}

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Answer:

Angle 4 and 8.  C.

Step-by-step explanation:

6 0
3 years ago
What is the value of x?
anzhelika [568]
We know that 5x-3x =2x

So x(5x-3x)=x×2x

=(2x)^2

=4x^2

Which is given as 18.

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3 years ago
Hey I need help with this maths question
irinina [24]

Answer:

X=4

Step-by-step explanation:

2X - 10 = -2

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8 0
3 years ago
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A newspaper is conducting a statewide survey concerning the race for governor. The newspaper will take a simple random sample of
katen-ka-za [31]

Answer:

Larger sample size gives less std error and hence test statistic is larger.

Step-by-step explanation:

Given that a newspaper  is conducting a statewide survey concerning the race for governor. The newspaper will take a simple random sample of n registered voters and determine X = the number of voters that will vote for the Democratic candidate. Is there evidence that a clear majority of the population will vote for the Democratic candidate

Group        I   II

Success    640 64

Total   1200 120

p 0.533333333 0.533333333

q 0.466666667 0.466666667

se 0.014401646 0.045542003

p diff 0.033333333 0.033333333

Z 2.314550249 0.731925055

p      0.01           0.233

we find that though p is the same, std error is very small for larger sample size thus making z statistic much bigger.  So we get p value less than 0.05 whereas for 120 sample size, std error is large so Z statistic is small thus making p value to accept null hypothesis

3 0
3 years ago
1/2+1 1/2 i need the answer fast
iogann1982 [59]

Answer:

the answer is 2

Step-by-step explanation:

1/2 plus 1 is 1 1/2 then add another 1/2

3 0
2 years ago
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