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marishachu [46]
2 years ago
15

Find the surface area of a cube with sides = 9 inches. Think about finding area of 1 face and then multiplying by 6.

Mathematics
2 answers:
nadezda [96]2 years ago
7 0

Answer:

Step-by-step explanation:

babunello [35]2 years ago
4 0
<h2>Answer:</h2>

<u>We know that cube is made up of 6 enclosed square together of side 9cm</u>.

Area of one square = a²

= 9² = 81cm².

So, Area of 6 faces = 6a²

= 6 × 81 = 486cm².

You might be interested in
For which equations is 8 a solution? Select the four correct answer
maxonik [38]

Answer:

I <em>believe</em> the answers are= 2, 3, 6, 8

Step-by-step explanation:

For #2, you would subtract 2 from both sides. 10-2=8. x=8.

For #3, you would add 4 to both sides of the equation, making the final answer: x=8

For #6, you would divide both sides by 3. 24 divided by three is 8.

For #8, I multiplied the whole equation by 8, which is the denominator of x/8. 1 times 8=8. The final answer would be x=8.

Hope this helps!  

8 0
2 years ago
Read 2 more answers
1. what is the period of the function f(x) shown in the graph?
ki77a [65]
Problem 1)

Answer: pi/2

-------------------------------

Place your pencil at (0,3) which is a good starting point, since x = 0 is often a good starting point. Trace along the curve until you reach back up at y = 3 again. So you'll go down and then back up until you reach (pi/2, 3). The difference in x values is pi/2-0 = pi/2. Every pi/2 units, the graph curve repeats itself over and over infinitely. 

Note: this is not the only way to determine the period. You can start at any point really. It helps to start at a min or max value, or at x = 0. In this case, it happened to be both. 

===========================================================
Problem 2)

Answer: See figure 2 (attached image)

-------------------------------

Point A is at (0,0)
Point B is at approximately (1.57,-2) which is exactly (pi/2,-2)

===========================================================
Problem 3)

Answer: See figure 3 (attached image)

===========================================================
Problem 4)

Answer: Choice B
The graph is horizontally compressed by a factor of 2 and shifts up 1 unit

-------------------------------

The jump from x to 2x will have the period go from 2pi to pi. The graph curve repeats itself more and more often (twice as often). Therefore we have an accordion squeeze effect going on, or think of it like a spring being pressed down. We have horizontal compression along the x axis.

Adding 1 to the end shifts every point upward 1 unit. Overall, this gives the visual the entire curve itself is shifted up 1 unit.

===========================================================
Problem 5)

Answer: f(x) = 5.05*sin((pi/12)x)+5.15

-------------------------------

max = 10.2
min = 0.1
difference = 10.2-0.1 = 10.1
Divide this difference in half: 10.1 = 5.05
So a = 5.05 is the amplitude

The period is T = 24 hrs since the height is 5.15 at midnight of one day, it rises and then falls and rises back to 5.15 by the next midnight
b = 2pi/T = 2pi/24 = pi/12
c = 0 since there is no phase shift in this sine function

d = 5.15 is the midline, which is the starting height at x = 0

f(x) = a*sin(bx-c)+d
f(x) = 5.05*sin((pi/12)x-0)+5.15
f(x) = 5.05*sin((pi/12)x)+5.15

===========================================================
Problem 6)

Answers are:
A) The max height of the Ferris wheel is 64 ft
B) The radius of the Ferris wheel is 30 ft

-------------------------------

The largest height of the table is 64, so 64 is the max height. This is why A is true.

B is true since the max is 64 and the min is 4, so 64-4 = 60 is the diameter, making the radius r = d/2 = 60/2 = 30

C is false because the height at t = 0 is 34 ft, but the lowest point is at height h = 4

D is false because the period is actually 10 seconds. Eg: going from t = 7.5 to t = 17.5 is a time of 10 seconds. During this time, the heights are 4, 34, 64, 34, 4 telling us that a full cycle has taken place.

===========================================================

4 0
3 years ago
Question: (Graph photo attached)
Anna11 [10]

The double bar graph shows the number of imports and exports for a company in a certain week.

On how many days was the number of exports greater than the number of imports?

Answer: From the given double bar graph, we clearly see:

Number of imports for a company on Monday = 15

Number of exports for a company on Monday = 7

Number of imports for a company on Tuesday = 18

Number of exports for a company on Tuesday = 9

Number of imports for a company on Wednesday = 14

Number of exports for a company on Wednesday = 14

Number of imports for a company on Thursday = 15

Number of exports for a company on Thursday = 6

Number of imports for a company on Friday = 9

Number of exports for a company on Friday = 19

From the above information, we clearly see that only on Friday the number of exports are greater than number of imports. Therefore, there is only 1 day when the number of exports greater than the number of imports.

Hence the option D. 1 is correct



8 0
3 years ago
Please answer CORRECTLY !! Will mark brainliest !!!!!
Karolina [17]

Answer:

the answer is d sorry if im wrong

5 0
3 years ago
Which statements about the value of the digits in the number 1,111,111 are true?
shepuryov [24]

The digit in the hundred thousand places is 10 times the value of the digit in the ten thousand place option, third is correct.

<h3>What is the ratio?</h3>

It is described as the comparison of two quantities to determine how many times one obtains the other. The proportion can be expressed as a fraction or as a sign: between two integers.

The digit in the hundred thousand places = 1

And can be written as 100,000

The digit in the ten thousand places = 1

And can be written as 10,000

Taking ratio:

10000/100000 = 1/10

1 = 10×1

Thus, the digit in the hundred thousand places is 10 times the value of the digit in the ten thousand place option, third is correct.

Learn more about the ratio here:

brainly.com/question/13419413

#SPJ1

5 0
2 years ago
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