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adell [148]
3 years ago
9

Complete the steps for having the quadratic formula using the following ax^2+bx+c=0

Mathematics
1 answer:
melisa1 [442]3 years ago
4 0
In order to solve am equation with the quadratic formula, we need to take the coefficients that are available and use them with the quadratic formula. Since there are no coefficients given here, we would just use the quadratic formula in its base form. 

\frac{-b +/-  \sqrt{ b^{2} -4ac } }{2a}
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Cherie bought 2 cupcakes and got $12.50 back.Sonya bought 4 cupcakes and got $5.00 back.If they each paid with the same amount o
blondinia [14]

Answer:

The cost of 1 cupcake  = $3.75.

Step-by-step explanation:

Let the cost of one cupcake = $ x.00

Now, the money spent by Cherie on 2 cupcakes = 2 ($x.00) = $2x

Also, the money spent by Sonya on 4 cupcakes = 4 ($x.00)  = $4x

Now, according to the question:

$2x  + $12.50  = $4x  + $5.00

or, 2x + 12.50 = 4x + 5

⇒ 4x - 2x = 12.50 - 5

or, 2x = 7.50

or, x  = 7.50/2 = 3.75

or, x = $3.75

Hence, the cost of 1 cupcake  = $3.75.

5 0
3 years ago
In a class total students are 200, 180 appeared in exams 70% qualified.how many students failed in exam.
Feliz [49]

Answer:

54

Step-by-step explanation:

First, take the number 200. we can remove 20, because they didn't go to the exams.

Secondly, we have to find 70% of 180. This can be done by doing some math.

Let's do this by using fractions. 70/100 * 180 = 126.

Third, we find the other 30% by doing the same equation.

30/100 * 180 = 54


(This is the part where you thank me, and give your opinions, and maybe "brainliest" answer. :D)

3 0
3 years ago
Read 2 more answers
Complete the table for the given rule.<br> Rule: y=2x
Contact [7]
9 - 18
5 - 10
1 - 2

Work —
First line:
y = 2 (9)
y = 18

Second line:
10 = 2x
5 = x

Third line:
y = 2 (1)
y = 2
4 0
3 years ago
Read 2 more answers
Cam used 2/3 of the flour from a 5-lb bag to make all of her holiday cookies. How much flour, in pounds, is left in the bag?
Tcecarenko [31]

Answer:

3.3lbs

Step-by-step explanation:

5 x 2/3 = 3.3

7 0
3 years ago
Each of 7 students reported the number of movies they saw in the past year this is what they reported
kiruha [24]

Answer:

Mean= \frac{11+9+11+15+17+13+17}{7}

        =13.28 ≈13

For median arrange in ascending or descending order. i am arranging in ascending order

9,11,11,13,15,17,17

cancel from left and right until one number is left

median=13

4 0
2 years ago
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