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3 years ago

Find the area. yes it is a right triangle and I'm a somewhat sure angle in the bottom left is 60°

Mathematics

1 answer:

Taya2010 [7]3 years ago

4 0

Answer:ill help all triangles should equal to 180 hope it did help you

Step-by-step explanation:

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What is the interquartile range of the data set?

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2 years ago

a toy company need to package balls with a 2in radius in sets of 2. they have two options: a square prism or a cylinder. The dim

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Answer:

Step-by-step explanation:

square prism

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2 years ago

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What is the probability that you will roll a dice and get 3, then get an ace from a deck, then (without replacing the other card

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2 years ago

A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic ca

Ugo [173]

Answer: A. 664

Step-by-step explanation:

Given : A marketing firm is asked to estimate the percent of existing customers who would purchase a "digital upgrade" to their basic cable TV service.

But there is no information regarding the population proportion is mentioned.

Formula to find the samples size , if the prior estimate to the population proportion is unknown :

$n=0.25(\dfrac{z*}{E})^2$

, where E = Margin of error.

z* = Two -tailed critical z-value

We know that critical value for 99% confidence interval = $z*=2.576$ [By z-table]

Margin of error = 0.05

Then, the minimum sample size would become :

$n=0.25(\dfrac{2.576}{0.05})^2$

Simplify,

$n=0.25\times2654.3104=663.5776\approx664$

Thus, the required sample size= 664

Hence, the correct answer is A. 664.

5 0

3 years ago

Please help, love you

ExtremeBDS [4]

Answer:

162

Step-by-step explanation:

Note that you can split the given shape into a triangle and a rectangle.

Area of rectangle = base x height

base = 12

height = 9

Plug in the corresponding numbers into the corresponding variables:

Area of rectangle = 12 x 9

= 108

Area of triangle = (base x height)/2

base = 12

height = 9

Area of triangle = (12 x 9)/2

= (108)/2

= 54

Next, add the two areas together to get the full area:

108 + 54 = 162

162 is your answer.

5 0

2 years ago