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worty [1.4K]
3 years ago
15

Help will mark brainliest

Mathematics
1 answer:
vlada-n [284]3 years ago
8 0

Answer:

Step 1 : Plug values into the quadratic formula

x = -(-5) +/- √ (-5)^2 - (4)(2)(-3) / (2)(2)

Step 2 : Solve

x = 5 +/- √ 25 + 24 / 4

x = 5 +/- √ 49 / 4

x = 5 +/- 7 / 4

x1 = 5 - 7 / 4  AND x2 = 5 + 7 /4

x1 = -1/2 OR - 0.5    

x2 = 3

Hope this helps!!

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Shkiper50 [21]

Answer:  Choice A

s = 10k + 6(5)

========================================================

Reason:

k = number of adults

10k = cost for all the adults (at $10 per ticket)

5 = number of children

6(5) = cost for all the children ($6 per ticket)

10k + 6(5) = total cost for all adults and children

s = total cost in dollars

s = 10k+6(5)

4 0
2 years ago
A stock lost 8 1/4 points on Monday and then another 2 3/4 points on Tuesday. On Wednesday, it gained 12 points.
o-na [289]

The net gain of the stock for these three days is 1 points

<h3>Net gain</h3>

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Net gain / net loss = Monday + Tuesday + Wednesday

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= - 8 1/4 - 2 3/4 + 12

= -11 + 12

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brainly.com/question/1290557

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3 0
2 years ago
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Vinvika [58]

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6 0
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If y=2cos(x/2) then d^2y/dx^2 =
Sladkaya [172]
We first need dy/dx.

dy/dx = -2sin(x/2)(1/2)

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Add.<br> 0.6+(-2.1)<br> Enter your answer, as a decimal, in the box.
olasank [31]

Answer:

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Step-by-step explanation:

0.6-2.1=-1.5

0.6-2.1= - I2.1-0.6I

2.1

-0.6

--------

1.5

3 0
3 years ago
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