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siniylev [52]
3 years ago
14

Simplify (2x2 - 5) - (3x2 + 4).

Mathematics
2 answers:
34kurt3 years ago
8 0

Answer: -x^2 - 9

Step-by-step explanation: Get rid of the parentheses and change the problem to 2x2 - 5 - 3x2 - 4. Combine like terms. The correct answer is -x2 - 9.

statuscvo [17]3 years ago
6 0

Answer:

-x² - 9 is your simplified form

Step-by-step explanation:

Combine terms with the same amount of variables.

(2x² - 5) - (3x² + 4)

First, distribute the negative sign to all terms within the second parenthesis

(2x² - 5) - 3x² - 4

Combine like terms

2x² - 3x² = -x²

-5 - 4 = -9

-x² - 9 is your simplified form

~

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torisob [31]
24 bottles in total.....6 orange and 4 apple

probability of first picking an orange is 6/24 reduces to 1/4
probability of second picking an apple is 4/23

probability of both is 1/4 * 4/23 = 1/23
7 0
4 years ago
The square root of 42. The answer needs to be simplified. The problem must be solved by using perfect squares. The answer can't
Rasek [7]
From what I can tell, this can't be simplified, because there are no factors of 42 that are perfect squares.  I would leave it as the square root of 42.
5 0
3 years ago
3 (x-5) =5<br> what is x?
azamat

Answer: 20/3

So when solving this equation first distribute our 3,we will now have   3x-15=5.

Next we will Add 15 to both sides of our equation. Now we have 3x=20.Then divide our terms,and you will have 3x/3 = 20/3

<u>This will leave you with  1x=20/3. </u>

So the X is 20/3.

      Hope that helped!

8 0
3 years ago
Paul is saving for a down payment to buy a house. The account earns 13% interest compound quarterly, and he wants to have $15,00
Tatiana [17]

Answer:

The principal must be = $8991.88

Step-by-step explanation:

Formula for compound interest is:

A = P(1 + \frac{r}{n})^{nt}

Where A is the amount after 't' years.

P is the principal amount

n is the number of times interest is compounded each year.

r is the rate of interest.

Here, we are given that:

Amount, A = $15000

Rate of interest = 13 % compounded quarterly i.e. 4 times every year

Number of times, interest is compounded each year, n = 4

Time, t = 4 years.

To find, Principal P = ?

Putting all the given values in the formula to find P.

15000 = P(1 + \frac{13}{400})^{4\times 4}\\\Rightarrow 15000 = P(1 + 0.0325)^{16}\\\Rightarrow 15000 = P(1.0325)^{16} \\\Rightarrow 15000 = P \times 1.66817253\\\Rightarrow P = \dfrac{15000}{1.66817253}\\\Rightarrow P \approx \$8991.88

So, <em>the principal must be = $8991.88</em>

4 0
3 years ago
Which of the following groups of terms can be used interchangeably when working with normal distributions?
BARSIC [14]

Answer:

The correct answer is D) areas, probability, and relative frequencies

Step-by-step explanation:

This is because each of these terms refers to an amount of space surrounding the mean on the normal distribution curve. Each of them let's us know how likely a spot is to have a value within it.

The z-score would not fit this as it identifies the value and how far away a single spot on the graph would be.

5 0
3 years ago
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