I could use some help here​
I could use some help here​ - 1

Answers

Answer 1
Answer:

Answer:

3x^3 + 6x^2

Step-by-step explanation:

2x^2 + 3x^3 + 4x^2

Combine like terms

3x^3  + (2x^2+4x^2)

3x^3 + 6x^2

Answer 2
Answer:

Answer:

b. 6 x² + 4 x³

Step-by-step explanation:

2x ² + 3x³ + 4x²

Combine like terms, we get

2 x² + 4 x² + 3 x³

6 x² + 3 x³

option a and b both are similar.


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merchandise which is regularly $4.88 is on sale for 25% off. a customer buys 3 items. what is the total for 3 items?

Answers

If you would like to know the total price for 3 items, you can calculate this using the following steps:

25% of $4.88 = 25/100 * 4.88 = $1.22
$4.88 - $1.22 = $3.66

3 * $3.66 = $10.98

The correct result would be $10.98.

Select the proper placement for parentheses to speed up the addition for the expression 2+9+8+1

Answers

Answer:

(8+2) and (9+1) is the most fastest adding pair.

Step-by-step explanation:

It is easy to add zero digit number here it will be

We can club the two number or we can club two pair so as to form 10 in each of the pair

It will be (8+2) which gives 10

And (9+1) which gives 10

And it will very easy and fast to add 10 + 10

Rather than any other pair.

2+9+8+1 = (2+8) + (9+1) = 10 + 10 = 20

What value of x makes this proportion true 3/x=15/40

Answers

An expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context. The value of x makes this proportion true 3/x=15/40 is 8.

What is an Expression?

In mathematics, an expression is defined as a set of numbers, variables, and mathematical operations formed according to rules dependent on the context.

A ratio shows us the number of times a number contains another number. The value of x in the given expression can be found using the ratios. Therefore, The value of x makes this proportion true 3/x=15/40 is,

3 / x = 15 / 40

3 × 40 = x × 15

120 = 15x

x = 120/15

x = 8

Hence, The value of x makes this proportion true 3/x=15/40 is 8.

Learn more about Expression:

brainly.com/question/13947055

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If you would like to solve the equation 3 / x = 15 / 40 for x, you can calculate this using the following steps:

3 / x = 15 / 40     /*x
3 = 15 / 40 * x    /*40
3 * 40 = 15 * x   /15
x = 3 * 40 / 15
x = 8

The correct result would be 8.

Solve by the multiplication of equality 5/49*x = 20/7

Answers

5/49(x) = 20/7 
5x/49 = 20/7
5x/49 × 49  = 20/7 × 49
5x  = 140
5x / 5  = 140 / 5
x = 28


A direct variation function contains the points (–8, –6) and (12, 9). Which equation represents the function?

Answers

Answer:

Step-by-step explanation:

The direct variation is defined as

where, k is constant of proportionality.

It is given that a direct variation function contains the points (-8,-6) and (12, 9).

Substitute x=-8 and y=-6 in the above equation.

Divide both sides by -8.

The value of constant of proportionality is . So, the required equation is

At x=12,

It means, the line passing through (12,9). Hence, the equation is correct.

Therefore, the equation of the function is .

Answer:

C

Step-by-step explanation:

Help!! I'm really confused, please explain how you got it

Answers

3a²-4b
3(-6)²-4(-5)
108+20
128