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ZanzabumX [31]
4 years ago
11

How to solve this problem?

Mathematics
1 answer:
OverLord2011 [107]4 years ago
6 0
What happens when a quadratic function touches the x-axis only once?  It means that the quadratic function has only one real zero.  So which formula should we use? How about the almighty quadratic formula?

So when does the quadratic formula give you only one real zero? When the discriminant is equal to zero!

The discriminant is: b²-4ac

In our quadratic equation that means:
b = (3+m)
a = 4
c = 1

Thus, we need to solve: (3+m)²- 4*(4)*(1) = 0

m²+ 6m + 9 - 16 = 0
m² + 6m - 7 = 0
(m+7)(m-1) = 0
m = -7, 1

That's it! Plug back in and graph to see that it actually works!
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Mother dairy sold 3,355 litres of milk in the month of April and May if they sold equal amount every day what was its daily sale
Shkiper50 [21]

Answer:

<h2>55 litres </h2>

Step-by-step explanation:

Litres of milk sold by the dairy in April and May together = 3,355

So,

Litres of milk sold by the dairy per day = ?

To find this we have to do addition and division and have to go through the calender a bit :)

<h2>Let's solve it!!</h2>

No. of days in April = 30 days

No. of days in May = 31 days

Therefore total no. of days in both the months = 30 + 31

= 61

Now,

Litres of milk sold by the dairy per day ( or in simple words the daily sale )

=  \frac{3355}{61}

= 55

Si therefore 55 litres of milk was the daily sale.

Hope it helps you!!

#IndianMurga(. ❛ ᴗ ❛.)

7 0
3 years ago
George is at Krogers and sees that he can buy 6 candy bars for $21. George would like to buy enough candy bars for everyone in h
Nana76 [90]

Answer:

it would be $98 for the whole class

Step-by-step explanation: let me know if you have to show your work so i can tell you how i did it :) .

6 0
3 years ago
Read 2 more answers
A regular octagon rotates 360° about its center. How many times does the image of the octagon coincide with the preimage during
Lemur [1.5K]
A regular octagon has 8 sides, so it would coincide exactly each time the vertices fall into the same places. In one full 360-degree rotation, any "selected" vertex would fall into all 7 other vertices one after the other, before going back to its original position. Therefore, there would be 8 times during the rotation that the octagon coincides with the preimage.
7 0
3 years ago
Please help solve x^2-2x-4=0
ivolga24 [154]
Simple....

you have x^{2} -2x-4=0

To solve...you must complete the square...

use ( \frac{b}{2} ) ^{2} to create a new term...

x=1(+/-)\sqrt{5}

Thus, your answer.

(Or, x≈3.23606797, -1.236067967)

8 0
3 years ago
Do the ratios 12/6 and 2/1 form a proportion?
xxMikexx [17]
Yes they do because 12/6 go into 2/1
6 0
4 years ago
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