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3 years ago

11

Idk get points or smth i dont need help anymore besides maybe mental help.

1 answer:

lilavasa [31]3 years ago

8 0

Answer:

Step-by-step explanation:

You might be interested in

Find the equation, (f(x) = a(x-h)2+ k), for a parabola containing point (-1,0) and having (-3, 4) as a vertex. What is the stand

kirill115 [55]

$(h;\ k)\ -\ \text{the coordinates of the vertex}$

$\text{therefore we have:}\ f(x)=a(x+3)^2+4$

$\text{a parabola that passes through the point (-1; 0)}$

$\text{substitute the coordinates of the poin (-1; 0) to the equation}$

$(-1;\ 0)\to x=-1;\ y=0\\\\0=a(-1+3)^2+4\\\\0=a(2)^2+4\\\\0=4a+4\ \ \ |-4\\\\4a=-4\ \ \ |:4\\\\a=-1$

$f(x)=-(x+3)^2+4=-(x^2+2\cdot x\cdot3+3^2)+4=-(x^2+6x+9)+4\\\\=-x^2-6x-9+4=-x^2-6x-5$

5 0

3 years ago

Need help ASAP please

KatRina [158]

Answer: choice D) 5

Step-by-step explanation:

22.5/9=2.5

23.5/2.5=9.4

9.4-4.4=5=x

3 0

3 years ago

Janet had 2 pieces of candy. She ate<br> one. How many did she have left?

Kobotan [32]

Answer:

One

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

A small 17 kilogram canoe is floating downriver at a speed of 2 m/s. What is the

RideAnS [48]

<h2>Hello!</h2>

The answer is:

Answer: 34

Units: Joules

$KE=34J$

<h2>Why?</h2>

The kinetic energy is the work needed to accelerate an object to a determined speed.

The kinetic energy can be calculated using the following equation:

$KE=\frac{1}{2}mv^{2}$

Where,

m, is the mass of the object.

v, is the speed of the object.

So, we are given the information:

$mass=17kg\\\\v=\frac{2m}{s}$

Then, substituting and calculating we have:

$KE=\frac{1}{2}mv^{2}$

$KE=\frac{1}{2}*17kg*(\frac{2m}{s})^{2}$

$KE=8.5kg*(\frac{4m^{2}}{s^{2}})$

$KE=34\frac{kg.m^{2}}{s^{2}}=34J$

Have a nice day!

7 0

3 years ago

Please explain I just started learning this

Digiron [165]

Answer:

x=5

y=7

Step-by-step explanation:

y = x+2 so plug that in the next equation as y

so it be --> 5x+(-4)(x+2)= -3 now use distributive property

(-4 times x)+(-4 times 2)= -4x+-8 replug that back in

5x-4x+-8 = -3 subtract your x

1x = x so ---> x+-8 = -3 now to get rid of -8 we have to add 8 to it

x= -3 but whatever you do to one side u do to the other so u have to add 8 to -3---> so it be x=5

now take that x=5 and plug it in to your first eqaiuton to get y

y=5+2 ---> y =7

6 0

3 years ago