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3 years ago

Which function is nonlinear? A.9y+3=0 B. y-4x=1 C.y=2+6x4 D.x-2y=7 E.x/y+1=2

Mathematics

2 answers:

Sunny_sXe [5.5K]3 years ago

5 0

Answer:

Step-by-step explanation:

VladimirAG [237]3 years ago

4 0

Answer:

9y+3=0 is linear

y-4x=1 is linear

y=2+6x4 is not linear

x-2y=7 is linear

x/y+1=2 is linear

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5.63 round to nearest tenth

White raven [17]

5.6 is 5.63 rounded to the nearest tenth

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4 years ago

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What is the solution of the system? Use elimination.

sweet [91]

Answer:

The solutions to the system of the equations by the elimination method will be:

$x=2,\:z=-1,\:y=2$

Step-by-step explanation:

Given the system of the equations

$2x\:+\:2y\:+z\:=\:7$

$-x-\:y\:+z\:=\:-5$

$x+3y-4z=12$

solving the system of the equations by the elimination method

$\begin{bmatrix}2x+2y+z=7\\ -x-y+z=-5\\ x+3y-4z=12\end{bmatrix}$

$\mathrm{Multiply\:}-x-y+z=-5\mathrm{\:by\:}2\:\mathrm{:}\:\quad \:-2x-2y+2z=-10$

$\begin{bmatrix}2x+2y+z=7\\ -2x-2y+2z=-10\\ x+3y-4z=12\end{bmatrix}$

$-2x-2y+2z=-10$

$+$

$\underline{2x+2y+z=7}$

$3z=-3$

$\begin{bmatrix}2x+2y+z=7\\ 3z=-3\\ x+3y-4z=12\end{bmatrix}$

$2x+6y-8z=24$

$-$

$\underline{2x+2y+z=7}$

$4y-9z=17$

$\begin{bmatrix}2x+2y+z=7\\ 3z=-3\\ 4y-9z=17\end{bmatrix}$

Rearranging the equations

$\begin{bmatrix}2x+2y+z=7\\ 4y-9z=17\\ 3z=-3\end{bmatrix}$

solve $3z=-3$ for z:

$z=-1$

$\mathrm{For\:}4y-9z=17\mathrm{\:plug\:in\:}z=-1$

solve $4y-9\left(-1\right)=17$ for y:

$4y-9\left(-1\right)=17$

$4y+9=17$

$4y=8$

$y=2$

$\mathrm{For\:}2x+2y+z=7\mathrm{\:plug\:in\:}z=-1,\:y=2$

solve $2x+2\cdot \:2-1=7$ for x:

$2x+2\cdot \:2-1=7$

$2x+3=7$

$2x=4$

$x=2$

Therefore, the solutions to the system of the equations by the elimination method will be:

$x=2,\:z=-1,\:y=2$

5 0

3 years ago

Preston is making cookies. He has 4 over 5 cup of flour in a bag. He then used two 1 over 10 cups of flour for his recipe. Which

Setler79 [48]

Answer:

I'm pretty sure the answer is C. 6 over 10 , because 4 over 5 minus 2 times 1 over 10 equals 4 over 5 minus 3 over 10

Step-by-step explanation:

4/5 - 2(1/10) =

4/5 - 2/10 =

8/10 - 2/10 =

6/10

8 0

3 years ago

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Can someone help please will mark brainlist

Gekata [30.6K]

Answer:

r = 45
A = 6361.7

Step-by-step explanation:

x^2 + y^2 = 2025
this is a circle
root 2025 will give the radius
root 2025 = 45
pi * 2025 will give the area
A = 6361.7

6 0

3 years ago

Rewrite the parametric equations in Cartesian form x=-t^2 y=t^2

nalin [4]

Hello from MrBillDoesMath!

Answer:

y = x

Discussion:

x = t^2

y = t^2

I hope you see that

x = t^2 = y

Thank you,

MrB

4 0

3 years ago