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Lyrx [107]
3 years ago
13

What is the correct expansion of (2x+3) (2x^2-5)

Mathematics
2 answers:
Dmitry_Shevchenko [17]3 years ago
7 0

Answer:

4x^3 + 6x^2 -10x - 15

Step-by-step explanation:

* means multiply

4x^3 + 6x^2 -10x - 15

2x * 2x^2 = 4x^3

2x * -5 = 10x

3 * 2x^2 = 6x^2

3 * -5 = -15

iren2701 [21]3 years ago
4 0

Answer:

4x³ + 6x² - 10x - 15

Step-by-step explanation:

(2x+3) (2x²-5)

4x³ - 10x + 6x² - 15

4x³ + 6x² - 10x - 15

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How would I graph this and find the solution to this system. <br> y=-1/2x+4
Lesechka [4]

Answer: Easy, graph and solution

Step-by-step explanation: First what you want to do  use the slope intercept form to find the slope and y intercept; -1/2 and y intercept (0,4). Any line can be graphed using 2 points. Select two x values, plug them into the equation to find the corresponding y values. Solution

1.) Step; x and y

Table:

             0║4

             8║0

  • All you had to do is divide 0=-x/2 +4= .  (8) For the x intercept you get 8and for y you get 4 because you divided  0=-0/2+4

5 0
3 years ago
Write an equation of a linear function with a slope of -3 and y intercept of (0,-7)
just olya [345]
Y= -3x-7
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3 0
3 years ago
Question 1 (1 point) How many terms are in the polynomial? 3x3 + 4x2 - 8x - 5 3 4 7 ​
yKpoI14uk [10]

Answer:

  4

Step-by-step explanation:

The polynomial 3x^3 +4x^2 -8x -5 has 4 terms. A term is a product or single variable or constant separated from other terms by a plus or minus sign.

The four terms are ...

  • 3x^3
  • 4x^2
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7 0
4 years ago
If you toss a coin and spin the spinner, what is the probability of landing on heads and spinning blue?
ivann1987 [24]

Answer:

Step-by-step explanation:

There are two sides on a coin, heads and tails. So, the probability  of flipping heads is going to be 1/2, as there is one chance out of the two options that you will flip a head. As for spinning blue, there are 3 options that are blue out of the four color options given. So, the probability of spinning blue would be 3/4. Hope this helped :) Take this with a grain of salt, though. It's been a while since I reviewed probabilities.

4 0
3 years ago
Given m∥n, find the value of x and y.
Korolek [52]

Answer:

x = 15

y = 63

Step-by-step explanation:

9x - 7 + 4x - 8 = 180

13x = 195

x = 15

9x - 7 = 2y + 2

126 = 2y

y = 63

8 0
2 years ago
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