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kaheart [24]
3 years ago
11

Distribute 9(3x^3-2)

Mathematics
2 answers:
Vladimir79 [104]3 years ago
4 0

First you need to distribute the 9.

So 9 times 3 and 9 times 2

The Algebraic should look like now: (27^3x-18)

So the final answer is: 27x^{3} - 18

You cannot simplify it anymore because there are <u>no like terms left.</u>

Firlakuza [10]3 years ago
4 0

first you have multiply 9 time all inside the parethesys.

9 time 3= 27

9 time -2=18

the 9 doesn't affect the exponent 3

27x^3-18

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What is it. Please do you carry the negative or the square first.
klemol [59]

Answer:

(3)

Step-by-step explanation:

5x^2 - (2x-3)^2

5x^2- (2x-3)(2x-3)

now you distribute, the 5x^2 stay the same for now

So for now just (2x-3)(2x-3)

first 2x * 2x= 4x^2

2x * -3= -6x

-3 * 2x= -6x

-3 * -3= 9

So (2x-3)(2x-3) is 4x^2 -6x-6x+9

You can simplify that to 4x^2 -12x +9

Now we add in the 5x^2 from the start don't forget!

And we are subtracting sooo

5x^2 -(4x^2 -12x +9)

5x^2 -4x^2 +12x -9

x^2 +12x -9

4 0
3 years ago
How to simplify (1-3)^2
Lyrx [107]
If you would like to simplify (1 - 3)^2, you can do this using the following steps:

<span>(1 - 3)^2 = (-2)^2 = 4
</span>
The correct result would be 4.
6 0
3 years ago
If the odds against a student receiving an A grade in a mathematics class are 7 to 3, what is the
katovenus [111]

Answer:

70%

Step-by-step explanation:

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4 0
3 years ago
Part B A sales person earned 1375
Furkat [3]

Question:

A salesperson earns commission on the sales that she makes each month.

The salesperson earns a 5% commission on the first $5,000 she has in sales.

The salesperson earns a 7.5% commission on the amount on her sales that are greater than $5,000.  

Part A:

This month the salesperson had $8,000 in sales. What amount of commission, in dollars, did she earn?

Part B:

The salesperson earned $1,375 in commission, last month. How much money, in dollars, did she have in sales last month?

Answer:

A) The amount of commission  = $575

B) The total sales amount  =  $20000

Step-by-step explanation:

<h3><u>Part A </u></h3>

Given:

Total amount earned =  $8,000 in sales

To Find :

The amount of commission, in dollars

Solution:

The commission she earns = Commission 1+ Commission 2----------(1)

Commission 1 = 5% of 5000

Commission 2  = 7.5 % of (8000- 5000}

Finding commission 1:

= 5% of 5000

= \frac{5}{100} \times 5000

= 0.05 \times 5000

= $250 ------------------------------(2)

Finding commission 2:

=  7.5 % of (3000)

=\frac{7.5}{100}\times 3000

= 0.075 \times 3000

= $225----------------------------------(3)

Substituting (2) and (3) in (1)

The commission she earns = $250 + $225 = $575

<h3><u>Part B</u></h3>

Given:

Total commission earned = $1375

To Find :

The total sales amount = ?

Solution ;

Let the sales amount be x

Then

1375 = 5% of  5000 + 7.5 % of (x -5000)

1375 = 0.05 \times 5000 + 0.075 \times (x -5000)

1375 = 250 + 0.075x - 375

1375 = -125 + 0.075 x

1375 +125 = 0.075 x

1500 = 0.075x

x = \frac{1500}{0.075}

x = 20000

The total sales amount  is $20000

5 0
3 years ago
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