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leva [86]
4 years ago
15

Which of the following options best describes the solution process and solution(s) for the quadratic equation? -2x2 + 3x + 4 = 7

Mathematics
1 answer:
Sophie [7]4 years ago
3 0

Answer:

Step-by-step explanation:

If there are options, please share them.

Subtract 7 from both sides.  We obtain:  -2x^2 + 3x - 3.  The coefficients of this quadratic are a = -2, b = 3 and c = -3.  Thus, the discriminant is

b^2 - 4ac, or 3^2 - 4(-2)(-3), or 9 - 24, or -15.  Because the discriminant is negative, this quadratic has two complex roots which differ:

      -3 ± i√15

x = -----------------

             -4

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How can you find and use absolute value? I can find absolute value by...
Tamiku [17]

Answer:

Step-by-step explanation: Step 1: Isolate the absolute value expression.

Step2: Set the quantity inside the absolute value notation equal to + and - the quantity on the other side of the equation.

Step 3: Solve for the unknown in both equations.

Step 4: Check your answer analytically or graphically.

5 0
3 years ago
250 divided by _ =25
Greeley [361]

Answer:

10

Step-by-step explanation:

To solve this you would do 250 divided by 25 because that solves for the unknown. This gets you 10. So, 250/10 is equal to 25

Hope this helps!

7 0
3 years ago
Will bought 3 college textbooks. One cost $32, one cost $45, and one cost $39. What is the average price of his books? Choose th
ch4aika [34]
I think the correct answer among the choices presented above is option B. Average is the sum of all the data divided the number of data added. From the statement, we have 3 prices to be added and divided by 3. Therefore, the average is calculated as

<span>($32 + $45 + $39) ÷ 3</span>
7 0
3 years ago
Rewrite the polynomial in the form ax^2+bx+c and then identify the values of a, b, and c. 6+9x^2
Ulleksa [173]

Answer:

see below

Step-by-step explanation:

6+9x^2

Rewriting in decreasing powers of x

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ax^2+bx+c

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5 0
3 years ago
Emily is picking strawberries at a speed of 3 strawberries per second. Her little sister Sophia joins Emily when there are 20 st
Zina [86]

Answer:

6 seconds

Step-by-step explanation:

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6 0
4 years ago
Read 2 more answers
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