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Arisa [49]
3 years ago
12

If a coin is tossed twice what is the probability of getting two heads

Mathematics
1 answer:
Degger [83]3 years ago
5 0
25% because the first FLIP, it was a fifty-fifty chance. FLIP again and the chances are divided by two since you can only get 2 things, either heads or tails.
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I need help with these questions (see image). Please show workings.<br>​
denpristay [2]

Answer:

24 cm

Step-by-step explanation:

The altitude from the centre to the chord is 5 cm and bisects the chord.

The radius of the circle is 26 cm ÷ 2 = 13 cm

There is a right triangle formed with legs 5 and x ( x is half the chord )

The hypotenuse is the radius, then using Pythagoras' identity

x² + 5² = 13²

x² + 25 = 169 ( subtract 25 from both sides )

x² = 144 ( take the square root of both sides )

x = \sqrt{144} = 12

Then

length of chord = 2x = 2 × 12 = 24 cm

4 0
3 years ago
Read 2 more answers
Please help! i'm not good with algebra nor chemistry.
Snowcat [4.5K]
Here :2(6.02*10^23)(3.35*10^-23)

2*6.02*3.35

answer : 4.0334*10^1
hope this helped !
7 0
3 years ago
As America grew stronger in the 20th century, it became more important to educate citizens about how government operates and int
Dmitrij [34]
To educate citizens on how to choose leaders
7 0
3 years ago
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What equations are equivalent to -4+(4+5)?
Igoryamba

Answer:

-4 + 9

9- 4

Step-by-step explanation:

4 0
3 years ago
Daniel wants to buy cookies for her friends. The area of a cookie is 113.04 in2. What is the circumference of the cookie?
prisoha [69]

Answer:

The circumference of the cookie is 37.68 inches.

Step-by-step explanation:

We have,

The area of a cookie is 113.04 square inches.

It is circular in shape. The area of circle is given by :

A=\pi r^2

r is radius of circle

r=\sqrt{\dfrac{A}{\pi}} \\\\r=\sqrt{\dfrac{113.04}{3.14}} \\\\r=6\ \text{inch}

The circumference of circular shaped object is given by :

C=2\pi r\\\\C=2\times 3.14\times 6\\\\C=37.68\ \text{inch}

So, the circumference of the cookie is 37.68 inches.

7 0
3 years ago
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