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Lena [83]
3 years ago
14

What is the probability of flipping two tails and rolling an even number

Mathematics
2 answers:
Sergeeva-Olga [200]3 years ago
8 0
Two tails on two coins, 1/4 chance
An even number on a die 3/6 or if simplified, 1/2.
dangina [55]3 years ago
4 0
The other answer is correct if these are separate tasks.  However, if you need to flip two tails and roll an even as the question states you need to multiply the probabilities together.
It is 1/2 to flip a tail and we have that twice and 1/2 to roll an even and we have that once so the formula is

1/2 * 1/2* 1/2 = 1/8

The probability of doing all three things together is 1/8
You might be interested in
My question is: 40 people voted for ""other"". what’s the estimate of total voters from part (b) accurate?
kirill [66]

Answer:

No

Step-by-step explanation:

From part (b)

If number who voted = 280

Number of voters who would have voted Geron:

35% * 280

0. 35 * 280 = 98 voters

40 people voted for others:

To check if estimate from. Part b is accurate :

10% voted for others

10% of estimated voters = 40

Let, number of estimated voters = x

0.1 * x = 40

0.1x = 40

x = 40/0.1

x = 400

If 40 people Voted others, the the number of voters should be 400 and not 280

6 0
3 years ago
Read 2 more answers
Select all of the following that are quadratic equations.
goldenfox [79]

Answer:

1. x² + 3x - 5 = 0

2. x² - x = 3 x + 7

4. 7x² + 14x = 0

Step-by-step explanation:

A Quadratic equation takes the form;

ax² + bx + c = 0

a, b, c are constants and a cannot be 0.

Options 1 fits this;

x² + 3x - 5 = 0

Option 2 fits this as well;

x² - x = 3 x + 7  

x² -x - 3x - 7 = 0

x² - 4x - 7 = 0

Option 4 fits this as well if c = 0.

7x² + 14x + 0 = 0

8 0
3 years ago
Find the determinant of this matrix:
Bogdan [553]

Answer:

40

Step-by-step explanation:

\left[\begin{array}{ccc}a&b\\c&d\end{array}\right] = ad-bc

4 0
2 years ago
Read 2 more answers
A square has a side length of (X + 8) feet long. Which expression(s) represent(s) the perimeter of the square, in square feet? S
tekilochka [14]

Answer:

D and E

Step-by-step explanation:

Perimeter = 4s

4(x + 8)

4x + 32

5 0
3 years ago
A store owner uses a selling price of 125% of the cost of an item. If a pair of jeans has a sales price of $52.50, what cost doe
IgorC [24]

Answer:

The cost store owner pay for the pair of jeans is <u>$42</u>.

Step-by-step explanation:

Given:

A store owner uses a selling price of 125% of the cost of an item.

If a pair of jeans has a sales price of $52.50.

Now, to find the cost price of the store owner pay for the pair of jeans.

Let the cost price of jeans be x.

Sell price of jeans = \$52.50.

Now, to get the cost price of store owner pay for the pair of jeans:

<em>As given the</em><em> </em><em>store owner uses a selling price of 125% of the cost of an item.</em>

According to question:

125\%\ of\ x=52.50

\frac{125}{100} \times x=52.50

1.25x=52.50

<em>Dividing both sides by 1.25 we get:</em>

x=42.

<em>The cost price of jeans = $42.</em>

Therefore, the cost store owner pay for the pair of jeans is $42.

6 0
3 years ago
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