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-BARSIC- [3]
3 years ago
14

Identify the values a, b, and c is the first step in using the quadratic formula to find the solution(s) to a quadratic equation

. What are the values a, b, and c in the following quadratic equation? 18=-9x+7x2
Mathematics
2 answers:
zlopas [31]3 years ago
7 0

The values are a = 7, b = -9, c = -18.

<u>Step-by-step explanation:</u>

The given quadratic equation is 7x^{2} - 9x = 18

The general form of the quadratic equation is ax^{2} + bx + c = 0

where,

  • a is the coefficient of x².
  • b is the coefficient of x.
  • c is the constant term.

Now, you have to modify the given quadratic equation similar to the general form of quadratic equation.

So, bring the constant term 18 to the left side of the equation for equating it to zero.

⇒ 7x^{2} - 9x - 18 = 0

Compare the above equation with general form ax^{2} + bx + c = 0

⇒ a = 7

⇒ b = -9

⇒ c = -18

Therefore, the values of a, b, and c are 7, -9 and -18.

Liula [17]3 years ago
7 0

Answer:

-7, 9, 18

Step-by-step explanation:

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HELP ASAP FOR LOTS OF POINTS AND BRAAINLIEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
WARRIOR [948]

Answer:

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Step-by-step explanation:

Hope this helped!

7 0
3 years ago
How much will have to deposit into an account that pays 5.25% simple interest today, in order to earn $345.45 interest in seven
Ann [662]

To earn $345.45 simple interest in 7 years, you have to invest $940.

<u>Step-by-step explanation:</u>

Step 1:

Given details are Simple Interest Rate (R) = 5.25%, Simple Interest (SI) = $345.45, Time (T) = 7 years

Step 2:

Use the above details to find principal using the formula for Simple Interest (SI) = PRT/100

⇒ 345.45 = (P × 5.25 × 7)/100

⇒ 34545 = 36.75 P

⇒ P = $940

3 0
3 years ago
1 1/5 as decimal because im doing surface area but its hard​
professor190 [17]

Answer:

1.2

Step-by-step explanation:

1 \frac{1}{5\\}=1.2

7 0
3 years ago
Subtract 5x - 2 from -3x +4
Solnce55 [7]

Answer:

8x+2

Step-by-step explanation:

Or -8x+2 but i think its 8x+2

4 0
3 years ago
Please help!!!<br> i would really apreciate it
postnew [5]

Answer:

it should be the graph on the bottom right

Step-by-step explanation:

The income should be more than the cost in order to make a profit and that happens for Leanne when she sells 8 quilts, so the 8 should be on the x-axis (the axis named "Quilts Sold")

The income should be 0 in the beginning bc when she sells 0 quilts she will be earning 0.

after selling 8 quilts her income will be higher than her costs

(Though naming the y-axis as "profit" is not accurate bc when she sells 0 quilts she will lose money since she will be spend money to make the quilts but not earn the money to compensate for the cost).

with all of these reasons combined the correct should be the one on the bottom right

3 0
3 years ago
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