Answer:Cannot be solve how much time did she spend all together but adding it all together would be 122 minutes/ she never went swimming
Step-by-step explanation:
The theoretical probability of tossing a heads with one coin is 1/2 since there are 2 sides. You have to multiply 1/2*1/2, because there are now two coins. 1/2*1/2=1/4 so the probability of rolling 2 heads on 2 coins is 1/4. The probability of rolling a 2 or 5 on a dice is 2/6 or 1/3. This is because there is a total of 6 sides on a dice and 2 or 5 are 2 possibilities so the probability would be 2/6. You can simplify this to 1/3. You now have to multiply 1/4*1/3 since it says 2 heads with 2 coins. 1/4*1/3=1/12. 1/12 is your final answer.
Answer:
x-3
Step-by-step explanation:
f(x) = 3x – 2
g(x) = 2x + 1
(f – g)(x) = 3x-2 - ( 2x+1)
Distribute the minus sign
= 3x-2 -2x -1
= x -3
Answer:
x = 2
y = -1
Step-by-step explanation:
Since it gives you the value of y already, just plug that into the equation, like so:
y = 4x - 9
x - 3 = 4x - 9
<em><u>Subtract the x from both sides:</u></em>
x - 3 = 4x - 9
-x - x
__________
-3 = 3x - 9
<em><u>Then, add 9 to both sides:</u></em>
-3 = 3x - 9
+9 + 9
________
6 = 3x
<em><u>Divide both sides by 3:</u></em>
2 = x
<em><u>Now plug in x for y:</u></em>
y = x - 3
y = 2 - 3
y = -1