3 years ago

Find the value of this expresion if x=3 and y=-1

Mathematics

1 answer:

Strike441 [17]3 years ago

8 0

What’s the expression?

You might be interested in

Plsss hurry i need help brainliest involed

dybincka [34]

45.5 is your answer, you will have to multiple the height times the base ( 5 x 9.1 )

7 0

2 years ago

PLEASE HELP ME THIS IS DUE TODAY, I NEED HELP!!!!!!

natita [175]

Answer:

I will explain in comments I just want some points for helping you.

Step-by-step explanation:

sorry that sounds selfish. :'(

4 0

2 years ago

If x =4 calculate the value of 2x squared - 5

Vlad1618 [11]

<span>2x squared - 5
= 2(x)^2 - 5
= 2(4)^2 - 5
= 2(16) - 5
= 32 - 5
= 27</span>

3 0

3 years ago

What is the vertex of the graph of the function below? <br><br>y = x2 + 8x + 12

Vera_Pavlovna [14]

Hello,

$The\,\,formula\,\,for\,\,the\,\,vertex\,\,of\,\,a\,\,quadratic\,\,equation\,\,is: \\ V=( -\frac{b}{2a},f(-\frac{b}{2a}) )$

That means that we must first obtain x, then we replace x in the function to get y, so:

$x=- \frac{b}{2a} \\ \\ x=- \frac{8}{2*(1)} \\ \\ \boxed{x=-4} \\ \\ Reeplacing \,\,x: \\ y=(-4)^{2} +8*(-4)+12 \\ y=16-32+12 \\ \boxed{y=-4}$

Answer: V=(-4 , -4)

5 0

2 years ago

78 round to the nearest tenth

LenaWriter [7]

78 rounded to the nearest tenth is 80

3 0

3 years ago