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kramer
3 years ago
8

(Full question above)

Mathematics
1 answer:
zlopas [31]3 years ago
5 0

Answer:

B. 300

Step-by-step explanation:

Final figure volume = big cuboid volume - small cuboid volume

Volume of a cuboid = height x width x length

Final figure = (6 x 6 x 15) - (4 x 4 x 15)

Final figure = 540 - 240

Final figure = 300mm^2

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Eva8 [605]

Find the area of the square, which has a side length of 2.

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Volume = 4 x 5 = 20 square units total.

8 0
3 years ago
what positive number satisfies the condition that twice the number minus three times the reciprocal of the number is equal to 1?
marshall27 [118]
Solve:

"<span>twice the number minus three times the reciprocal of the number is equal to 1."
                                                     3(1)
Let the number be n.  Then 2n - ------- = 1
                                                       n

Mult all 3 terms by n to elim. the fractions:

2n^2 - 3 = n.  Rearranging this, we get 2n^2 - n - 3 = 0.

We need to find the roots (zeros or solutions) of this quadratic equation.

Here a=2, b= -1 and c= -3.  Let's find the discriminant b^2-4ac first:

disc. = (-1)^2 - 4(2)(-3) = 1 + 24 = 25.

That's good, because 25 is a perfect square.
                -(-1) plus or minus 5         1 plus or minus 5
Then x = ------------------------------ = --------------------------
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x could be 6/4 = 3/2, or -5/4.

You must check both answers in the original equation.  If the equation is true for one or the other or for both, then you have found one or more solutions.</span>
8 0
3 years ago
WILL MARK YOU AS BRAINLIEST!!!!!!!!!! PLEASE HELP DUE TODAY AT 1 :(((((
Alika [10]

Answer: here is a app to use  

Socratic by Google

Step-by-step explanation:

 

Socratic by Google its on iphone and sumsung

5 0
3 years ago
WILL MARK BRAINLIEST A number cube is rolled and a coin is flipped. Predict how many times you would get heads and a number grea
Over [174]

Answer:

coin flip is 1/2

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240 x 1/6 = 40

answer is C) 40

Step-by-step explanation:

8 0
3 years ago
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I will give brainleist again if you help me on this question and thanks for helping
algol [13]

Answer:

36 for area, 66 for surface area.

Step-by-step explanation:

I am not sure what it is asking, but if this is what you were asking for here it is. Surface area is harder to explain, but volume is multiply all dimensions.

Hope this is what it was asking!

5 0
3 years ago
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