Ask question

Ask question

All categories

3 years ago

11

ADD: (8x3+ 3x2 + 4 ) + (12x5 - 7x3 + 6x2)

1 answer:

Shkiper50 [21]3 years ago

8 0

The answer is: 12x5+x3+9x2+4

This is the correct answer because all of the exponents are in the correct calculation and the numbers as well.

I hoped this helped! :)

You might be interested in

Write an algebraic expression for two fifths the cube of a number

pashok25 [27]

N - the number

$\dfrac{2}{5}n^3$

7 0

3 years ago

Expand and simplify 5(2x-1)-2(3x+2)

kupik [55]

Answer:

4x - 9

General Formulas and Concepts:

<u>Pre-Algebra</u>

Distributive Property

<u>Algebra I</u>

Terms/Coefficients/Degrees

Step-by-step explanation:

<u>Step 1: Define</u>

5(2x - 1) - 2(3x + 2)

<u>Step 2: Solve for </u><em><u>x</u></em>

Distribute: 10x - 5 - 6x - 4
Combine like terms (x): 4x - 5 - 4
Combine like terms (Z): 4x - 9

6 0

2 years ago

Marta receive x amount dollars for helping her dad in the backyard she spent 1.77 of that amount on snacks after buying those sn

alexdok [17]

Answer:

x=15.50

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

A rectangular prism has a length of 8 in., a width of 4 in., and a height of 2 1/4 in.

Alexus [3.1K]

It would need 288 cubes to fill up the prism.

7 0

3 years ago

Read 2 more answers

Use Hooke's Law to determine the work done by the variable force in the spring problem. A force of 450 newtons stretches a sprin

vlada-n [284]

Answer:

The work done is 202.50Nm

Step-by-step explanation:

Given

$F =450N$

$x_1 = 30cm$

$x_2 = 60cm$

Required

The work done

First, we calculate the spring constant (k)

$F = kx_1$

$450N = k *30cm$

$k = \frac{450N}{30cm}$

$k =15N/cm$

So:

$F = kx_1$

$F(x) = 15x$

The work done using Hooke's law is:

$W =\int\limits^a_b {F(x)} \, dx$

This gives:

$W =\int\limits^{60}_{30} {15x} \, dx$

Rewrite as:

$W =15\int\limits^{60}_{30} {x} \, dx$

Integrate

$W =15 \frac{x^2}{2}|\limits^{60}_{30}$

This gives:

$W =15 *\frac{60^2 - 30^2}{2}$

$W =15 *\frac{2700}{2}$

$W =15 *1350$

$W =20250N-cm$

Convert to Nm

$W =\frac{20250Nm}{100}$

$W =202.50Nm$

7 0

3 years ago