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3 years ago

I need help! What should I do?!

Mathematics

1 answer:

larisa [96]3 years ago

4 0

So, to find the area of a triangle we use the formula

a=1/2bh

So to find the base measure across the bottom line.
And to find the height, measure the length of the sitter line (the one in the middle spanning from top to bottom)

We then multiply the base and the height

After that we take the answer we got from multiplying the base and the height and divide it by 2

And the number you get after you divide it by 2 is the area of the triangle.

So, we know the base of the triangle is 6cm and the height is 2cm
Then we do 6×2=12
12/2=6

So the area is 6cm
and the number closest to 6 is 12
So your answer should be A

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Step-by-step explanation:

Using normal distribution

z = (x - mean) / standard deviation

Nine percent of americans say they are well informed about politics in comparison to most people.

That means probability of success is p =9/100 = 0.09,

then probability of failure is

q = 1-p =1 -0.09= 0.91

n = number of sample = 200

x=(8% of 200) = 0.08×200 =16

mean = np = 200×0.09= 18

Standard deviation = npq = 200×0.09×0.91= 16.38

We are looking for the probability that less than 8% of the people sampled will answer yes to the question

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P (x greater than 16) =P(x lesser than/equal to 15)

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= -0.18

Looking at the normal distribution table

P(x greater than 16) = 0.5714

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2 years ago

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Step-by-step explanation:

Collinear points have the same gradient

find the gradient(slope) between AB first

$= \frac{1 - 2}{3 - 1} \\ = \frac{ - 1}{2}$

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Find the gradient between AC now

$= \frac{4 - 2}{ - 3 - 1} \\ = \frac{2}{ - 4} \\ = \frac{ - 1}{2}$

YOUR LAST STATEMENT NOW WILL BE

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1 year ago