Answer:
0.5 probability of pressing the button that doesn't work GIVEN that no candy is received.
Step-by-step explanation:
1) The probability of pushing the button that never works: 1/10 = 0.1
2) The probability of pushing one of the buttons that work half the time:
2/10 = 0.2
The probability of (2) not working = 0.5
Overall probability of (2) pressed and not working = 0.5 * 0.2 = 0.1
Probability of non working button being pushed GIVEN no candy is received will be: 0.1 / (0.1+0.1) = 0.1/0.2 = 0.5
Answer: 79 degrees
Step-by-step explanation:
4x+1 + 3x+4 = 180
7x + 5 = 180
7x = 175
x = 175:7 = 25
m8 = 3x + 4 = 3*25 + 4 = 79
Answer:
12
Step-by-step explanation:
Hello!
First of all you have to understand the order of operations.
PEMDAS
Parenthesis, Exponent, Multiplication/Divison, Addition, Subtraction.
From this you can see that we first have to deal with the exponent, then multiplication, then the addition.
So we get 2+9-(-1)
The 9 is from -3^2
2+9+1
11+1
12.
Hope this helps!
Answer:
(1, 2 )
Step-by-step explanation:
Given the 2 equations
3x + y = 5 → (1)
5x - 4y = - 3 → (2)
Rearrange (1) expressing y in terms of x by subtracting 3x from both sides
y = 5 - 3x → (3)
Substitute y = 5 - 3x into (2)
5x - 4(5 - 3x) = - 3 ← distribute and simplify left side
5x - 20 + 12x = - 3
17x - 20 = - 3 ( add 20 to both sides )
17x = 17 ( divide both sides by 17 )
x = 1
Substitute x = 1 into (3) for corresponding value of y
y = 5 - 3(1) = 5 - 3 = 2
Solution is (1, 2 )