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3 years ago

MULTIPLE CHOICE QUESTION What is the mean 11.65 11.85 11.45 11.25

Mathematics

1 answer:

dolphi86 [110]3 years ago

4 0

11.45... to solve it, you add all of the numbers and then divide by the total number of numbers. so 126 divided by 11

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What is the answer to this problem ?5 rows of 3s and 3 rows of 5s 3x5 =15×?

Rainbow [258]

Answer:

Step-by-step explanation:

solve for x:

15x = 3 ∙5

-15 + 15x = 15 - 15

x = 0

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3 years ago

What is the graph of the inequality in the coordinate plane? x ≥ 4

34kurt

If the solution is gray area, then neither of these graphs is a solution.

If the solution is white area, then the second graph from the left is a solution.

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3 years ago

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shepuryov [24]

Angle COD is 60 degrees

angle BOC is 80 degrees

Because angle DOE is vertically opposite to angle boa, it is also 40 degrees. we know that angle DOF is 120, so angle FOE is 120-40 = 80 degree, and angle BOC is vertically opposite do it is 80 degrees.

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3 years ago

The formula for a trapezoid relates the area A, the two bases, a and b, and the height, h.

Keith_Richards [23]

multiply both sides by 2 to get

2A = (a+b)*h

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4 years ago

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A stereo system is being installed in a room with a rectangular floor measuring 15 feet by 11 feet and a 10-foot ceiling. The s

Likurg_2 [28]

Answer:

Shortest length of wire = 28.60 feet

Step-by-step explanation:

Distances In Rectangular Objects

If we want to go from one point in space to another one, the shortest possible distance is through a line. But if we are not allowed to, we must try to use as many direct paths as possible to minimize the distance.

In our case, the minimum distance will be going right from one corner to the other through the air, but we must use walls and floor. So our choices are limited to shorten the distance as much as possible by taking paths from corners whenever it's possible.

Starting from the corner where the stereo system is located, we must try to reach the other corner by using one of these options

Cross the floor by its diagonal and then go right to the other corner in the ceiling
Cross one wall by its diagonal and then go to the other corner. It can be done for each adjacent wall to the stereo system.

If we try the first option first, the diagonal of the floor measures

$\displaystyle \sqrt{15^2+11^2}$

And now we reach the other corner, traveling a total distance of

$\displaystyle L_1\sqrt{15^2+11^2}+10$

$\displaystyle L_1=28.60\ {ft}$

Trying one of the adjacent walls

$\displaystyle L_2=\sqrt{15^2+10^2}+11$

$\displaystyle L_2=29.028\ feet$

And the final option is

$\displaystyle L_3=\sqrt{10^2+11^2}+15\ feet$

$\displaystyle L_3=29,87\ feet$

We can see the first is the shortest distance, so to reach the speaker we must cross the floor by its diagonal and the go up to the speaker

Note: Each of the options analyzed have a identical counterpart by taking the opposite side first. For example, the path floor-wall could have been done as wall-ceiling, with identical results

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3 years ago