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jasenka [17]
3 years ago
9

How do you solve a quadratic formula

Mathematics
1 answer:
VladimirAG [237]3 years ago
3 0
There's a lot of ways! So, you can plug in and solve, solve for the two roots, solve for the vertex form, and solve for the standard form. Multiple ways!
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I have no idea how to even begin this question.<br><br> Thank you!
MA_775_DIABLO [31]

Answer:

  • sin(x) = ±(√2)/2
  • r.a. = 45°
  • x = 45° +k·360°
  • x = 135° +k·360°
  • x = 225° +k·360°
  • x = 315° +k·360°
  • x ∈ {135°, 225°, 315°, 405°}

Step-by-step explanation:

Start by solving for sin(x).

  4sin(x)² = 2

  sin(x)² = 1/2 . . . . divide by 4

  sin(x) = ±√(1/2) = ±(√2)/2

Use your knowledge of the sine function to recognize that the reference angle is 45°, and that the angles x will be ...

  x = ±45° or 180°±45°   with multiples of 360° added

The solutions in the desired range are ...

  x ∈ {135°, 225°, 315°, 405°}

7 0
3 years ago
Determine if the statements below are true or false. (a) The area vector A of a flat, oriented surface is parallel to the surfac
Mazyrski [523]

Answer:

TRUE TRUE FALSE TRUE FALSE TRUE TRUE TRUE

Step-by-step explanation:

5 0
3 years ago
20% of a stores sales are toys. if the store sells $1,200 in toys during one month, what are the store's total sales?
Sati [7]
$6,000 because if $1,200 is 20% of total sales than total sales must be 5 times $1,200
5 0
4 years ago
Mariana tried to drink a slushy as fast as she could. She drank the slushy at a rate of 4.5 millimeters per second. After 17 sec
Nitella [24]

Answer: There is 225 millimeters of slushy originally in the cup.

Explanation:

Since we have given that

Rate at which she drink the slushy = 4.5 millimeters

Time taken to drink the slushy by Mariana = 17 seconds

Total quantity she drank is given by

4.5\times 17=76.5\ millimeters

Still there is left some slushy,

Quantity of slushy left =148.5 millimeters

Total quantity of slushy originally in the cup was given by

148.5+76.5=225\ millimeters

Hence, there is 225 millimeters of slushy originally in the cup.


6 0
4 years ago
Read 2 more answers
Is a number that is____________<br> a multiple of two or more numbers.
PSYCHO15rus [73]

A number that can only be divided by 1 or 0 is prime. A composite number is a number that can be divided by 0, 1, 2, etc. I couldn't really get the question that you were trying to type, but this is what I came up with.

Hope this helps and just remember you are loved!

7 0
3 years ago
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