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mylen [45]
3 years ago
7

The product of a binomial and a trinomial is x3+3x2-x+2x2+6x-2 Which expression is equivalent to this

Mathematics
1 answer:
solong [7]3 years ago
8 0
The answer is the first one.
Explanation:
X^3 stays the same because there are no other cubed numbers in the problem
Next you combine the x^2s
The x^2s are +3x^2 and +2x^2
Since they are both positive, you add them: 3x^2 + 2x^2 = 5x^2
Next you do the x values
-x and +6x, also known as 6x - x = 5x
Lastly, you just add in the -2 and get:
X^3 + 5x^2 + 5x - 2
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timofeeve [1]

Answer:

- 4x - 8

Step-by-step explanation:

- 4(x + 2) =  - 4x - 8

Hope this helps ;) ❤❤❤

7 0
3 years ago
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Jeffersonville Bank is offering it's customers a record 3.4% compound interest on new savings accounts. Mr. Kirks opens an accou
slega [8]
The answer to ur question is $2171.40. to find the answer out you would divide 2,100 by 100 then multiply that by 3.4 and ur answer would be 71.4 and jus add that to his total and u have ur answer
6 0
3 years ago
15 points<br> I really need help with this and it’s due soon please help me and explain.
PilotLPTM [1.2K]

A square's diagonal has a length equal to √(2) times the length of its sides. So if the side length is <em>x</em>, then the diagonal is such that

√(2) <em>x</em> = 10 cm

→   <em>x</em> = 10/√(2) cm ≈ 7.07 cm

The perimeter of a square is 4 times its side length, so the perimeter is

4 (10/√(2) cm) = 40/√(2) cm ≈ 28.3 cm

which makes 28.4 cm the closest answer.

8 0
3 years ago
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FIRST ANSWER GETS BRANLIEST
Darina [25.2K]

There are two steps to this problem. The first step is to make an equation for the cost of each company. The cost of each one involves 2 variables. However, we can ignore the number of days since the question asks for per day.

CostA = 90 + .40(miles)

CostB = 30 + .70(miles)

We want to know when A is a better deal or when A costs less. That is when CostA < CostB. We can then substitute the right sides of our equations into the inequality. This will give:

90 + .40(miles) < 30 + .70(miles)     This is where we will now begin to solve for the number of miles.

-30                      -30                       Subtract 30 from both sides.

60 + .4(miles) < .7(miles)                Simplify

      -.4(miles)   -.4(miles)                Subtract .4(miles) from both sides

60 < .3(miles)                                 Simplify

/.3     /.3                                        Divide both sides by .3

200 < miles                                   Simplify

So for A to cost less the number of miles must be greater than 200.

5 0
3 years ago
Write the word sentence as an equation. Then solve the equation.
lesya692 [45]

Answer:

27

Step-by-step explanation:

Here's the complete question:

Write the word sentence as an equation. Then solve the equation. A number k increased by 7 is 34.

An increase in k simply means that there's an addition. This will be:

k + 7 = 34

k = 34 - 7

k = 27

Therefore, the value of k is 27

Step-by-step explanation:

4 0
3 years ago
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