All categories

2 years ago

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

Mathematics

2 answers:

serious [3.7K]2 years ago

6 0

Answer:

the third option is the answer if you simplify

Harman [31]2 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

You might be interested in

WILL GIVE BRAINLIST AND FIVE STARS IF ANSWER IS CORRECT FOR THIS!

Arada [10]

Answer:

5= initials times number of clothing

Step-by-step explanation:

5 0

3 years ago

Carlos y pedro cumplen el mismo dia. Carlos tiene el doble de edad que pedro cuando pedro tenia la edad que tiene carlos ahora.

earnstyle [38]

12 años ????????????????

5 0

2 years ago

2^3a^7 times 2a^3 NEEE HELP

hichkok12 [17]

Step-by-step explanation:

explain step by step on photo, double check just in case

6 0

3 years ago

Two trains leave the same station at the same time, but are headed in opposite directions. One train travels at 70 mph and the o

uranmaximum [27]

Let

x--------> the time in hours

y-------> the distance in miles

we know that

The speed is equal to

$Speed=\frac{distance}{time}$

in this problem

$Speed=\frac{y}{x}$

$y=(Speed)*x$

Equation First Train

$y1=70x$

Equation Second Train

$y2=80x$

$y1+y2=600\ miles$ ---------> equation $1$

Substitute the values of $y1$ and $y2$ in the equation $1$

$70x+80x=600$

Solve for x

$150x=600$

$x=4\ hours$

therefore

the answer is

$4\ hours$

4 0

2 years ago

Read 2 more answers

In a certain town, 22% of voters favor a given ballot measure. for groups of 21 voters, find the variance for the number who fav

Galina-37 [17]

c. 4.6

21 X .22= 4.6

Calculating the variance requires finding the product of 21 and 22%. To make this easier we convert 22% into it's decimal form and construct the equation. To back check this answer we can use 10% of 21 voters which equals 2.1% then double that amount to reach 4.2%, knowing that we now have a close approximation of the variance we can eliminate answers a, b, and d, leaving c as the only logical choice.

5 0

2 years ago