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Grace [21]
4 years ago
9

Suppose three coins are tossed. what is the probability that two will turn up heads, and one turn up tails?

Mathematics
1 answer:
exis [7]4 years ago
4 0
T = Tail H = Heads

T T T
T T H
T H T
T H H
H T T
H T H
H H T
H H H

Above are all of the possibities the coins can land on which leads to a 3/8 chance that 2 coins will land on heads.
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Helppp meee if u can plzzzzz
noname [10]

Answer:

B

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which congruence theorems or postulates could be given as reasons why ABC =XYZ HELP !!!!
lara31 [8.8K]
Answers: 
A) SAS
B) ASA
E) LL

============================================================

Explanation:

Let's go through each possible answer choice

A. We can use SAS because we know that AC = XZ (horizontal sides) is one pair of congruent sides, the angle pairing is C = Z, and the other pair of sides is BC = YZ (vertical sides)

B. We can also use ASA. Note how A = X is one pair of angles, AC = XZ is the middle pair of sides, and C = Z is the second pair of angles. The side is between the angles.

C. We can't use SSS as we don't know AB = XY is true or not. There are no tick marks indicating congruence.

D. We can't use LA here because we don't know the altitudes (LA = leg altitude)

E. We can use LL here because we have two right triangles. The two pairs of legs (AC = XZ and BC = YZ) are congruent based on the tickmarks.

F. We can't use HL similar to the reasoning for choice C. We don't know the hypotenuses are congruent or not. If we knew that AB = XY, then we could use HL (hypotenuse leg).


4 0
4 years ago
Read 2 more answers
What is the slope of the line through (-9,6) and (-6,-9)?<br> Your answer must be exact.
iogann1982 [59]
The formula for slope is:

m=\frac{y_{2}-y_{1}}{x_{2}-{x_{1}}

So just plug in the values:

m=\frac{-9-6}{-6+9}=\frac{-15}{3}=-5

So m=-5!
5 0
3 years ago
Please show your work
anyanavicka [17]

Answer:

Step-by-step explanation:

This is a parallelogram.  What we know about the diagonals is that they intersect each other at their midpoints.  In other words, QT = ST, and PT = RT.  So that gives us 2 equations:

If QT = ST, then

2x = y + 3

If PT = RT, then

x + 5 = y  Solving by substitution, plug x + 5 in for y in the first equation.

2x = x + 5 + 3 and

2x = x + 8 and

x = 7  Now plug in 7 for x to solve for y:

If x + 5 = y, then

7 + 5 = y and

y = 12

6 0
3 years ago
Which expression can be used to convert 22 Australian dollars to US dollars? Assume 1. 2 Australian dollars equals 1 US dollar.
kolbaska11 [484]

The correct expression to convert the 22 AUD into USD is option A.

<h2>How do you convert the Australian dollars into US dollars?</h2>

Given that the value of 1 US dollar is equal to the value of 2 Australian dollars. We can write this as given below.

1 USD = 2 AUD

1 AUD = 1/2 USD

The 22 Australian dollars can be converted as,

22 \;\rm AUD = \dfrac {1}{2}\times 22 \;\rm USD

Hence the correct expression to convert the 22 AUD into USD is option A.

To know more, follow the link given below.

brainly.com/question/19943359.

3 0
2 years ago
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