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Mariana [72]
3 years ago
14

A rod of aluminium has a mass of 575.4g and a volume of 210cm3

Mathematics
1 answer:
andreev551 [17]3 years ago
6 0

Answer:

0.274g/cm^3

Step-by-step explanation:

density = mass / volume

so d = 575.4 / 210

d = 0.274g/cm^3

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The diagonal of a TV is 42 inches. The base is 38 inches wide. How tall is the Tv? Round your answer to the nearest tenth. Put y
Yuki888 [10]

Answer:20.6 inches

Step-by-step explanation:

The diagonal measure of a rectangular TV screen is 42 inches. The width of the screen is 36.6 inches.

The diagonal , width and height forms a right angle triangle

So we apply pythagorean theorem

Diagonal is the hypotenuse

LEt the height of the screen is 'h'

c^2= a^2 + b^2

42^2= 36.6^2 + h^2

Subtract 36.6^2 from both sides

h^2 = 424.44

Take square root on both sides

h=20.60194

Round to nearest tenth

Height of the screen = 20.6 inches

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2 years ago
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Step-by-step explanation:

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3 years ago
Easy word problem (click photo)
Sedaia [141]

Answer:

90 apples

Step-by-step explanation:

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2 years ago
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select whether the equation has a solution or not, square root x-2- square root 2x= square root x+2 (a. roots b. no roots)
Agata [3.3K]

The equation is \sqrt{x-2 \\ \\ -\sqrt{2x} = \sqrt{x +2}


Solution

<u>Step 1:</u>

Take square on both sides, we get

3x - 2\sqrt{x-2}\sqrt2{x} -2 = x +2

<u>Step 2:</u>

Subtract 3x - 2 from both sides, we get

-2\sqrt{x-2} \sqrt{2x} = -2x + 4

<u>Step 3:</u>

Again, square on both sides in order to get rid of the square root from the above equation, we get

8x^{2}-16x = 4x^{2} -16x +16

Now we have to simplify it,

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<u>Step 4:</u>

Now we have to solve this quadratic equation, in order to get the solution.

We get x = 2 and x = -2, When we verifying solution in the original given equation, the solution does not satisfy the equation.

Reason: We get negative number in the square root.

Therefore, it has no Roots.


<em>Answer: b) No roots</em>

5 0
3 years ago
If 9 inches of ribbon will make a 4-inch ribbon curl, how many inches of ribbon will it take to make the 6-inch ribbon curls the
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Divide 4 and 9 by 2 that will give you the size of a 2 in ribbon curl then add that back to the original 4 in Ribbon curl to make a 6 in
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