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3 years ago

If two fair coins are tossed simultaneously, what are the chances of both coming up 'heads'?

Mathematics

2 answers:

Blababa [14]3 years ago

4 0

Answer:

$\frac{1}{4}$

Step-by-step explanation:

We name the coins coin 1 and coin 2 for the sake of simplicity.

There are four possible situations:

coin 1 head, coin 2 head

coin 1 head, coin 2 tails

coin 1 tails, coin 2 head

coin 1 tails, coin 2 tails

Only case 1 results in both 'heads'. So the probability is 1/4.

masya89 [10]3 years ago

3 0

Answer:

i think 1/4

Step-by-step explanation:

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X-5y=33<br> 5x-6y=70<br> solve the system by the addition method

BARSIC [14]

For this case we have the following system of equations:

$x-5y = 33\\5x-6y = 70$

We multiply the first equation by -5:

$-5x + 25y = -165$

Thus, we have the equivalent system:

$-5x + 25y = -165\\5x-6y = 70$

We add the equations:

$-5x + 5x + 25y-6y = -165 + 70\\19y = -95\\y = - \frac {95} {19}\\y = -5$

We find the value of the variable "x":

$x-5 (-5) = 33\\x + 25 = 33\\x = 33-25\\x = 8$

Thus, the solution of the system is:

$(x, y) :( 8, -5)$

Answer:

$(x, y) :( 8, -5)$

7 0

3 years ago

Which type of triangle has side measures of 6 cm, 7 cm, and 12 cm and one angle with a measure of 135°?

Fittoniya [83]

Answer:

Hm I dont know if im right but im thinking it's a scalene, because the sides are not equal, or a obtuse triangle, because one side is more than 90 degrees. Hope this helps!

5 0

3 years ago

Which expressions are equivalent to 4d+6+2d?

netineya [11]

Answer:

6d + 6 or 6(d + 1)

Step-by-step explanation:

4d + 6 + 2d

Collect like terms

4d + 2d + 6

= 6d + 6

It can also be written as

6(d + 1) by factorisation

6d + 6 or 6(d + 1)

I hope this was helpful, please rate as brainliest

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3 years ago

6) If a square is 8 inches on each side, what is its area? _______ square inches

dybincka [34]

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If the base and height increase by a factor of 2, what would be the effect on the area of the triangle?

xz_007 [3.2K]

The answer to this specific formula is 2

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3 years ago

If two fair coins are tossed simultaneously, what are the chances of both coming up 'heads'?​

If two fair coins are tossed simultaneously, what are the chances of both coming up 'heads'?