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3 years ago

For the following system, subtract the second equation from the first equation.

Mathematics

1 answer:

schepotkina [342]3 years ago

5 0

Here we multiply the 2nd eqation with -1 and then add both
and answer is
-6y=12

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Find the midpoint of the segment with the given endpoints.<br> (-4,-5) and (10,- 9)

Elanso [62]

Answer:

(3, -7)

Step-by-step explanation:

$\left(\frac{-4+10}{2}, \frac{-5-9}{2} \right)=(3, -7)$

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1 year ago

Eva works as a salesperson at an electronics store and sells phones and phone accessories. Eva earns a $8 commission for every p

adoni [48]

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Step-by-step explanation:

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3 years ago

In a group of 21 students, 8 students take Art courses, 7 students take Music courses. Two students take both courses. A student

Blababa [14]

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3 years ago

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7 0

3 years ago

Read 2 more answers

What’s the height of the can?

kondaur [170]

Answer:

5 inches

Step-by-step explanation:

The formula to find the surface area of a cylinder is A = 2πrh + 2πr²

Since we need the height we will need to solve for h

First we can subtract 2πr² from both sides to get A - 2πr² = 2πrh
Then we can divide both sides by 2πr to get $h=\frac{A-2\pi r^{2} }{2\pi r}$

Now we can plug in our known values and solve for h

Here we were given the diameter, d, however this formula is in terms of the radius, r.
The diameter is equivalent to double the radius, d = 2r
Therefore the radius is equivalent to half the diameter, $r=\frac{1}{2} d$
Plugging in d to solve for r we get $r=\frac{1}{2}(2)$ which simplifies to r = 1

The two variables for this equation we have no obtained, A = 12π and r = 1, so we can plug them into our equation to solve for the height

$h=\frac{12\pi -2\pi (1)^{2} }{2\pi (1)}=h=\frac{12\pi -2\pi }{2\pi }=\frac{10\pi }{2\pi } =5$
The height is 5 inches

4 0

3 years ago