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3 years ago

I need help someone help me

Mathematics

1 answer:

Contact [7]3 years ago

8 0

The lateral area is 111
Hope that helped sorry if it’s wrong

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Find the complete solution of the system 5x+3y+11z=37 3y+z=12 5x+9y+13z=61

valkas [14]

Answer:

$y = \displaystyle\frac{12-z}{3}\\\\x = -2z + 5$

Step-by-step explanation:

We are given a system of equation:

$5x+3y+11z=37\\3y+z=12\\5x+9y+13z=61$

To find a solution to the given system, we follow the given steps.

1. Subtracting second equation from first and third equation, we get:

$5x+3y+11z-3y-z=37-12\\5x+10z = 25\\5x+9y+13z-3(3y+z) = 61 - 36\\5x + 10z = 25$

2. After eliminating z to obtain two equations in two variable, we observe that the two equations obtained were same.

So we have three equations that will all graph in the same plane.

Thus, there are infinite number of solution to the given system of equation.

We can write the values of x and y in the form of z:

$y = \displaystyle\frac{12-z}{3}\\\\5x + 12 - z + 11z = 37\\5x = -10z + 25\\x = -2z + 5$

3 0

3 years ago

A football is kicked from the ground and follows the graph of the function y = –t2 + 3t, where y represents height and t represe

vesna_86 [32]

Answer:

The height of the objects are the same after 2 seconds.

Step-by-step explanation:

In order to calculate at which time both objects have the same height we need to find the value of t that makes both equations equal. Therefore:

$-t^2 + 3t = -t + 4\\t^2 - 3t - t + 4 = 0\\t^2 - 4t + 4 = 0\\t_{1,2} = \frac{-(-4) \pm \sqrt{(-4)^2 - 4*1*4}}{2*1} = \frac{4 \pm \sqrt{16 - 16}}{2}\\t_{1,2} = \frac{4}{2} = 2$

The height of the objects are the same after 2 seconds.

8 0

3 years ago

Renting video games from Store S costs $2.50 per game plus a monthly fee of $5.00. Renting video games from Store T costs $5.00

elixir [45]

I believe it is B. Sorry I’m not the best at math but hope this helps !!

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4 years ago

Write a system of equations for (4,-3)

qaws [65]

y = 4x - 3 would be it !!!!

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3 years ago

Mrs.Hickmam is making cookies. She uses 2 cups of sugar for every 3 tsp. of baking soda

Paul [167]

For every cup of sugar you use 1 1/2 tsp.
X=12(1.5)
18 tsp

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4 years ago