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3 years ago

Which expression is equivalent to 9x2-2y+3x2-3y?

Mathematics

2 answers:

serious [3.7K]3 years ago

6 0

Answer:

the third option is the answer if you simplify

Harman [31]3 years ago

6 0

Answer:

Third option

Step-by-step explanation:

9x^2 - 2y + 3x^2 - 3y

Combine like terms

9x^2 + 3x^2 = 12x^2
•••••••••••••••••••••••••••
12x^2 - 2y - 3y or 12x^2 - 5y

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PLEASE HELP!! • Which of these are equivalent to -11/4 ? Choose ALL that apply.

weeeeeb [17]

Answer: -11 divided by 4 , 11 divided by -4 , -11/4 , 11/-4 ,

Step-by-step explanation:

I got it right on iready

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3 years ago

I. Let f(x) = 2x – 1, g(x) = 3x, and h(x) = x2 + 1. Compute the following: 1. f(g(-1))

aleksandrvk [35]

F(g(-1))
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3 years ago

Find the slope and the y-intercept of the graph of y = -5 - 1/2x

ololo11 [35]

Slope: − 1 /2

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3 years ago

Read 2 more answers

What is the volume of the cuboid if it is 0.4cm x 1.5cm x 3.25cm

N76 [4]

Find the volume with the equation

v = length × width × height

For your cuboid

v = .4cm×1.5cm×3.25cm
v = 1.95 cm^3

Don't forget to always put your units!

8 0

3 years ago

PLZZZ HELP Find the inverse of a 2x2 matrix Plz give answer .

liraira [26]

Answer:

$\left[\begin{array}{cc}-\frac{1}{2}&\frac{1}{6}\\-\frac{1}{2}&\frac{1}{3}\\\end{array}\right]$

Step-by-step explanation:

If a 2x2 matrix is given as:

$\left[\begin{array}{cc}a&b\\c&d\\\end{array}\right]$

The inverse is:

$\frac{1}{ad-bc}\left[\begin{array}{cc}d&-b\\-c&a\\\end{array}\right]$

Our matrix given is:

$\left[\begin{array}{cc}-4&2\\-6&6\\\end{array}\right]$

Using the formula, let's find the inverse:

$\frac{1}{ad-bc}\left[\begin{array}{cc}d&-b\\-c&a\\\end{array}\right]\\=\frac{1}{(-4)(6)-(-6)(2)}\left[\begin{array}{cc}6&-2\\6&-4\\\end{array}\right]\\=\frac{1}{-12}\left[\begin{array}{cc}6&-2\\6&-4\\\end{array}\right]\\=\left[\begin{array}{cc}-\frac{1}{2}&\frac{1}{6}\\-\frac{1}{2}&\frac{1}{3}\\\end{array}\right]$

4 0

3 years ago