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3 years ago

4x- 2y = 8 2x + y =2

Mathematics

1 answer:

Juli2301 [7.4K]3 years ago

5 0

Answer:

x = 3/2 , y = -1

Step-by-step explanation:

I'm assuming that you are being asked to solve the system of equations for x and y.

given:

4x- 2y = 8 ---------------(1)

2x + y =2 -----------------(2)

We can solve this by elimination:

multiple (2) by 2, we get:

2(2x + y) =2(2)

4x + 2y = 4 ------------(3)

(1) + (3) , we get:

(4x- 2y) - (4x + 2y) = 8 + 4

8x = 12 (divide both sides by 8)

x = 12/8

x = 3/2 answer, substitute this into (2)

2(3/2) + y =2

3 + y = 2 (subtract 3 from both sides)

y = 2 - 3

y = -1 answer

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A bacteria kills one third of a million ant colony daily

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Answer:

Hello there!

Is your question a question cause it doesn't sound like one (I don't mean to be rude or anything)

I searched it up on the internet in a question like form

(ex. What bacteria kills 1/3 of a million ant colonies daily?)

and I got this.

<h2>pathogenic fungus Metarhizium</h2>

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https://www.sciencedaily.com/releases/2018/01/180109113231.htm

Hope this helps!

Step-by-step explanation:

this kills millions of ants though. (see attached image)

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3 years ago

The graph shows the distance y, in feet, a pendulum moves to the right (positive displacement) and to the left (negative displac

Dmitriy789 [7]

Answer:

2.5 seconds

Step-by-step explanation:

Resting position is at y = zero which mean x intercept

So, we need to find the time between two consecutive points of intersection with the x-axis.

Which mean it is the half period of the given function as it is a sine wave

From the graph we can deduce that

2.5 seconds are required for the pendulum to move from its resting position, swing in one direction and return to its resting position.

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3 years ago

Find the total surface area of this triangular prism. 21 cm 29 cm 22 cm 20 cm

mixer [17]

Answer:

313

Step-by-step explanation:

First of all you need to find out the surface of the front.

So you need to do 29cm + 29cm = 58cm.

You then have to do 22cm + 22cm = 44cm

So if you add those two numbers up you will get the front surface which is 102cm.

Next, you need to find the surface of the side.

So you need to do 20cm + 21cm = 41cm

After that, you need to find the back surface.

So you need to add 22cm +22cm = 44cm

Then you have to do 21cm + 21cm = 42cm

Add those two together to get 86cm

Then, you need to do the bottom of the shape.

So you need to add 22cm + 22cm (again) = 44cm

You then need to do 20cm + 20cm = 40cm

Add those together to get 84cm

Finally, you need to add 84cm + 86cm + 102cm + 41cm = 313cm

So your answer is:

Surface: 313

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2 years ago