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3 years ago

How to find the surface area of the open net

Mathematics

1 answer:

Kruka [31]3 years ago

5 0

To find the surface area of the open net, you’ll have to find the area of the faces
So, since there are 6 boxes you’ll have to find the area of the faces and add it up to find the surface area
10x4=40x4=160
3x4=12x2=24
160+24=184

Hope this helps ;)

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Solve the inequality g+5 /2

GarryVolchara [31]

The answer is D) g>1

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3 years ago

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In 2010, the population of a city was 101,000. From 2010 to 2015, the population grew by 8%. From 2015 to 2020, it fell by 5.7%.

alexira [117]

Answer:

6.5%

Step-by-step explanation:

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3 years ago

Write four consecutive numbers with a mean and medium of 14.5

Ivanshal [37]

Answer:

13, 14, 15, 16

Step-by-step explanation:

Call the first number n. Then the next three consecutive numbers (assuming integers) are n + 1, n + 2, n + 3.

The mean is the total of the numbers divided by how many there are.

$\frac{n+(n+1)+(n+2)+(n+3)}{4}=14.5$

Simplify and multiply by 4.

$4n+6=58\\4n=52\\n=13$

The first number is 13.

The median is 14.5, halfway between the "middle" numbers 14 and 15. This is just a check; no additional equation is necessary.

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3 years ago

A market researcher for Eric’s Electronics wants to study TV viewing habits of residents in Chicago. The individuals in the surv

Elena L [17]

Answer:

Step-by-step explanation:

Confidence interval is written in the form,

(Sample mean - margin of error, sample mean + margin of error)

The sample mean, x is the point estimate for the population mean.

Since the sample size is large and the population standard deviation is known, we would use the following formula and determine the z score from the normal distribution table.

Margin of error = z × σ/√n

Where

σ = population standard Deviation

n = number of samples

From the information given

1) x = 17.5

σ = 5

n = 50

To determine the z score, we subtract the confidence level from 100% to get α

α = 1 - 0.9 = 0.1

α/2 = 0.1/2 = 0.05

This is the area in each tail. Since we want the area in the middle, it becomes

1 - 0.05 = 0.95

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Confidence interval = 17.5 ± 1.16

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4 years ago

What's the degrees in this equation.

vfiekz [6]

My work shown is how to get x. now that you have x plug it into the equation.
To test your answer add both 51 and 39, and you should get 90 (the measurement of a right angle)

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4 years ago