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avanturin [10]
3 years ago
13

Formula of quadratic function and their graph​

Mathematics
1 answer:
Mama L [17]3 years ago
7 0

Answer:

-b +/- √b^2-4ac

_____________

2a

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The area of an equilateral triangle is given by A =3^1/2/4s^2. Find the length of the side s of an equilateral triangle with an
yan [13]

Answer:

The length of the side of an equilateral traingle s=2\sqrt{2} inches

Step-by-step explanation:

Given that the area of an equilateral triangle is given by

A=3^\frac{1}{2}s^2

It can be written as

a=\frac{\sqrt{3}}{4} s^2 Square inches        (1)

To find the length of the side s os an equilateral triangle

Given that area of an equilateral triangle is 12^\frac{1}{2} square inches

It can be written as

A=12^\frac{1}{2}

A=\sqrt{12} square inches

It can be written as

A=12^\frac{1}{2}

A=\sqrt{12} square inches           (2)

Now comparing equations (1) and (2) we get

\frac{\sqrt{3}}{4}s^2=\sqrt{12}

\frac{\sqrt{3}}{4}s^2=\sqrt{4\times 3}

Dividing by \frac{\sqrt{3}}{4} on both sides we get

\frac{\frac{\sqrt{3}}{4}s^2}{\frac{\sqrt{3}}{4}}=\frac{2\sqrt{3}}{\frac{\sqrt{3}}{4}}

\frac{\sqrt{3}}{4}s^2\times\frac{4}{\sqrt{3}}=2\sqrt{3}\times\frac{4}{\sqrt{3}}

s^2=8

s=\sqrt{8}

Therefore s=2\sqrt{2} inches

Therefore the length of the side of an equilateral traingle s=2\sqrt{2} inches

3 0
3 years ago
Help pls I will give brainliest and 5 STAR RATING BUT NEED A EXPLANATION
kirill [66]

Answer:

C

Step-by-step explanation:

3706*4

3000*4=12000

700*4=2800

6*4=24

12000+2800+24=14824

7 0
4 years ago
Double the number t?
Gnom [1K]

Answer:

2t

Step-by-step explanation:

4 0
3 years ago
If f(x)=x^2-9/x+3 is continuous at x=-3, find f(-3). <br><br> A. 3<br> B. -3<br> C. -6<br> D. 6
melamori03 [73]

Answer:

x = 3

Step-by-step explanation:

x^2 - 9 = (x+3)(x-3)

[(x + 3)*(x -3] /x+3) = x-3

x - 3 = 0

x = 3

3 0
3 years ago
Solve: tan(x) – cos2(x) = sin2(x)
Alja [10]

Answer:

pi/4 + kpi (choice #1)

Step-by-step explanation:


4 0
3 years ago
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