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Licemer1 [7]
3 years ago
8

When you would not need to use the quadratic formula

Mathematics
1 answer:
sergiy2304 [10]3 years ago
3 0

Answer: When the quadratic equation  can be factored or solved by completing the square, you do not need to use the quadratic formula

Step-by-step explanation: In the form   ax² + bx + c

Whenever <em><u>a</u></em> is 1 (implied, no coefficient of x²) and the constant,  <u><em>c</em></u>, is a multiple of numbers whose sum or difference is equal to <u><em>b</em></u>, factoring is much quicker and easier than using the quadratic formula.

Even when there is a coefficient of x², there are procedures to find the factors and solve for x without resorting to the quadratic formula.

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Write the standard equation of the circle with the given Center and radius:
Kipish [7]

9514 1404 393

Answer:

  B.  (x +4)² +(y +5)² = 64

Step-by-step explanation:

The equation for a circle with center (h, k) and radius r is ...

  (x -h)² +(y -k)² = r²

Filling in your given values, you have ...

  (x -(-4))² +(y -(-5))² = 8²

Simplifying, you get ...

  (x +4)² +(y +5)² = 64 . . . . . . . matches choice B

_____

<em>Additional comment</em>

As you learn more different "standard form" equations, it may be helpful to keep a list, along with reminders of what the variables stand for and how the equation is used.

5 0
2 years ago
6 (1/3x-2) please help me
levacccp [35]

Answer:

The answer will be 2x-12

Step-by-step explanation:

Hope this Helped

3 0
2 years ago
Read 2 more answers
Augustin has 20 different chess boards. If he played 3 games per day, each game played on a different board, how long would it t
Nutka1998 [239]

Answer:

514 days

Step-by-step explanation:

We use the formula (r+n-1)/r(n-1)

There are 1540 combinations. Then, we'll divide them by three because were not just finding the amount of combinations, but the time it'd take to play them all.

We get 513.333(cont.)

thats not really possible, so we're gonna go with 514 instead, rounding up. Normally we'd round down, because the number behind the decimal is below 5, but we really want to make sure we get every combination in there.

Hope this is helpful!

8 0
3 years ago
What is the solution of the inequality shown below X-3&gt;7
True [87]

Step-by-step explanation:

x-3>7 =>

x>10

hope this helps

5 0
2 years ago
At a cookout, the ratio of hamburgers to veggie burgers is 12:5. If 30 veggie burgers were eaten, how many hamburgers were eaten
Slav-nsk [51]

Answer:

72

Step-by-step explanation:

12x6=72

4 0
2 years ago
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