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KonstantinChe [14]
3 years ago
15

I need these answers I have no idea how to even do this please help

Mathematics
1 answer:
pav-90 [236]3 years ago
3 0

Answer:

y=5x+5

Step-by-step explanation:

What you're doing is creating an equation for #1 in slope-intercept form (y=mx+b)

Where m is the slope and b is your y-intercept!

If you already have 5 gallons in the tank and your adding 5 more gallons every minute, let x be your minutes:

y=5x+5

For #2 you're going to graph this, but you need to know your slope and y-intercept! In this case your slope is 5 and your y-intercept is 5. your graph would look like the picture attached.

For #3, yes! It does make sense to draw a line because the amount of water is increasing in the tank by 5 gallons every minute, meaning it will increase until she stops it.

For #4 If there had been no water in the tank already then the whole equation would change to just being y=5x, because there would be no starting amount. This also means that the graph would look different and it would start at 0 rather than at 5.

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Use a net of the square pyramid, if necessary, to find the surface area of the pyramid.
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Answer:

160

Step-by-step explanation:

You take the area of one of the triangles, which is 24, multiply that by 4. You get 96. You then add 64, the area of the square base, and end up with 160.

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3 years ago
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Tim and Tom are trying to earn money to buy a new game system over a 3-month period. Tim saved $45.14 each month. If they need a
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Use cramers Rule to solve the following system:
Jet001 [13]

Answer:

The solution to the system is x=1,y=-2 and z=-5

Step-by-step explanation:

Cramer's rule defines the solution of a system of equations in the following way:

x= \frac{D_x}{D}, y= \frac{D_y}{D} and z= \frac{D_z}{D} where D_x, D_y and D_z are the determinants formed by replacing the x,y and z-column values with the answer-column values respectively. D is the determinant of the system. Let's see how this rule applies to this system.

The system can be written in matrix form like:

\left[\begin{array}{ccc}5&-3&1\\0&2&-3\\7&10&0\end{array}\right]\times \left[\begin{array}{c}x&y&z\end{array}\right] = \left[\begin{array}{c}6&11&-13\end{array}\right]

Then each of the previous determinants are given by:

D_x = \left|\begin{array}{ccc}6&-3&1\\11&2&-3\\-13&10&0\end{array}\right|=199 Notice how the x-column has been substituted with the answer-column one.

D_y = \left|\begin{array}{ccc}5&6&1\\0&11&-3\\7&-13&0\end{array}\right|=-398 Notice how the y-column has been substituted with the answer-column one.

D_z = \left|\begin{array}{ccc}5&-3&6\\0&2&11\\7&10&-13\end{array}\right|=-995

Then, substituting the values:

x= \frac{D_x}{D}=\frac{199}{199}\\ x=1

x= \frac{D_y}{D}=\frac{-398}{199}\\ y=-2

x= \frac{D_z}{D}=\frac{-995}{199}\\ x=-5

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3 years ago
Which of the following is an example of a census?
atroni [7]

Answer:

B

Step-by-step explanation:

because its something thats important and needs to be done

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What is the solution to the linear equation?
murzikaleks [220]

4b + 6 = 2 – b + 4

4b + 6 = 2 – b + 4

+b                  +b

5b + 6 = 2 + 4

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     -6      -6

5b = 0

/5     /5

b = 0

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