All categories

4 years ago

What is the value of 2x3squared +x2squared when x = 3

Mathematics

1 answer:

irina [24]4 years ago

6 0

I suspect this is what you mean, if let me know
2x(3)^2+x(2)^2
2(3)(9)+3(4)
54+12=66

You might be interested in

A bathtub that holds 43 gallons of water contains 18 gallons of water. You begin filling it, and after 5 minutes, the tub is ful

Wittaler [7]

The tub holds 43 gallons.....it contains 18.....(43 - 18) = 25....so it needs 25 gallons.....after 5 minutes, the tub is full.....so it fills at a rate of 25/5 = 5 gallons per minute

y = 5x + 18....where y is the total gallons and x is the number of minutes
but we need it in standard form....

y = 5x + 18
-5x + y = 18
5x - y = -18 <== standard form

5 0

3 years ago

Each exterior angle of a regular n-gon has a measure of 9º. How many sides does the polygon have?

melamori03 [73]

They have 5 sides in total

7 0

3 years ago

Read 2 more answers

Classify the triangle by its angles and sides.

r-ruslan [8.4K]

Answer:

Step-by-step explanation:

This triangle has a right angle so it is right.

It also has three different sides so it is scalene.

C is the answer

8 0

3 years ago

a light in a lighthouse rotates 45° & pauses, it rotates & pauses again. the light moves a total of 95° during the 2 rot

Verdich [7]

47.5 cause in the two total rotations, it was 95 so you would divided 95 by two and get 47.5.

5 0

3 years ago

Read 2 more answers

P=(\frac{\sqrt{x} +2}{x-1}+\frac{\sqrt{x}\\ -2}{x-2\sqrt{x} +1} ) : \frac{4x}{(x-1)^{2} }

balandron [24]

The solution to the division of the given surd is: $\mathbf{P =\dfrac{(6\sqrt{x}-x^2\sqrt{x}-3x\sqrt{x}+2x+2)(x-1) }{8x} }$

<h3>Division of Surds.</h3>

The division of surds follows a systemic approach whereby we divide the whole numbers separately and the root(s) are being divided by each other.

Given that:

$\mathbf{P=(\frac{\sqrt{x} +2}{x-1}+\frac{\sqrt{x}\\ -2}{x-2\sqrt{x} +1} ) : \frac{4x}{(x-1)^{2} }}$

i.e.

$\mathbf{=\dfrac{(\frac{\sqrt{x} +2}{x-1}+\frac{\sqrt{x}\\ -2}{x-2\sqrt{x} +1} )}{ \frac{4x}{(x-1)^{2} }} }$

Using the fraction rule:

$\mathbf{\dfrac{a}{\dfrac{b}{c}}= \dfrac{a\times c}{b}}$

$\mathbf{\implies \dfrac{(\frac{\sqrt{x} +2}{x-1}+\frac{\sqrt{x}\\ -2}{x-2\sqrt{x} +1} )(x-1)^{2}}{4x}} }$

By simplification, we have:

$\mathbf{ =\dfrac{\dfrac{(6\sqrt{x}-x^2\sqrt{x}-3x\sqrt{x}+2x+2)(x-1) }{2} }{4x} }$

$\mathbf{P =\dfrac{(6\sqrt{x}-x^2\sqrt{x}-3x\sqrt{x}+2x+2)(x-1) }{8x} }$

Learn more about evaluating the division of surds here:

https://brainly.in/question/27942899

#SPJ1

6 0

2 years ago