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3 years ago

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Ericka flipped a coin 50 times and recorded her results. She flipped heads 27 times and tails 23 times. According to the experim

ental probability, how many times will Ericka be expected to flip tails if she flipped a coin 200 times.

1 answer:

Free_Kalibri [48]3 years ago

7 0

If she flipped the coin 50 times and it was tail 27 you would time 27 by 4 and it would equal 108 because 50 times 4 is 200

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user100 [1]

Answer:

Length of garden will be 30 metres.

Step-by-step explanation:

Let the Width of garden be x metres.

then,

Length of garden will be (x+6) metres.

Area = Length × Breadth

720 = x X (c+6)

720 = x²+6x

0 = x²+6x-720

As we can see above equation is a quadratic equation in the form of ax²+bx+C.

so,

$= \frac{ - b ± \sqrt{{b}^{2} - 4ac} }{2a} \\ = \frac{ - 6 ± \sqrt{{6}^{2} - 4 \times 1 \times - 720} }{2} \\ = \frac{ - 6 ± \sqrt{36 + 2880} }{2} \\ = \frac{ - 6 ± \sqrt{2916} }{2} \\ = \frac{ - 6 ± 54}{2}\\= \frac{-6+54}{2} ... \frac{ - 6 - 54}{2} \\ = \frac{48}{2} ... \frac{ - 60}{2} \\ = 24... - 30$

One of the Roots of the Quadratic equation is 24 and other is -30.

And as we know width of any garden cannot be negative so the width of garden will be 24 metres.

As we got the width,

adding 6 to it will give us the Length,

So,

24 metres + 6 = 30 metres.

Length of the garden is 30 metres.

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8 0

3 years ago

Find the unit rate.<br> 1/3 kilograms : 2/3 foot.

Darya [45]

Answer:

0.5kg per foot

Step-by-step explanation:

1/3 : 2/3

1 : 2

1 kg is 2 feet

0.5 kg/foot

5 0

3 years ago

Read 2 more answers

The surface area of yringaler prism

Trava [24]

Answer:

180 cm

Step-by-step explanation:

2(3*10) = 60

3*12 = 24

1/2(12*8) * 2 = 96

formula for a triangle is 1/2 b h

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3 years ago

What is the horizontal asymptote of f(x) = (2x+1)/ (x^2-4x+3) +2

evablogger [386]

Answer:

x=3 and x=1

Step-by-step explanation:Horizontal asymptote will occur at x=3 and x=1.

You have to factorize the denominator and find the zeroes of the denominator. That is how you find out the horizontal asymoptote.

6 0

3 years ago

PLEASE HELP ASAP WILL GIVE BRAINLIEST AND 100 POINTS TO EACH ANSWERER!

creativ13 [48]

Answer:

fd=(7)(1.06)d

Step 1: Add -7.42d to both sides.

df+−7.42d=7.42d+−7.42d

df−7.42d=0

Step 2: Factor out variable d.

d(f−7.42)=0

Step 3: Divide both sides by f-7.42.

d(f−7.42)f−7.42=0f−7.42

d=0f−7.42

Answer:

d=0f−7.42

Step-by-step explanation:

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3 years ago