Answer:
If these are addition:
1) 7
2) 3
3) 1
4) -3
5) 0
6) -5
If they are subtraction:
1) 9
2) 9
3) -7
4) 7
5) -4
6) 3
Step-by-step explanation:
Difference is subtraction, but your examples (7 and -3 = 10) implies that these are addition problems. Next time please set them up in a mathematical form.
This is how the problems would be set up:
Addition:
1) 8+(-1)= 7
2)6+(-3)= 3
3)-3+4= 1
4)2+(-5)= -3
4)-2+(-2)= 0
6)-1+(-4)= -5
Subtraction:
1) 8-(-1)= 9
2)6-(-3)= 9
3)-3-4=- 7
4)2-(-5)= 7
4)-2-(-2)= -4
6)-1-(-4)= 3
Answer: a) 
Step-by-step explanation:
Given : For safety reasons, four different alarm systems were installed in the vault containing the safety deposit boxes at a Beverly Hills bank.
Each of the four systems detects theft with a probability of .99 independently of the others .
Probability for independent events 
occurs together = 
.
Then, the probability that when a theft occurs, all four systems will detect it
= (0.99) x (0.99) x (0.99) x (0.99)
Hence, the probability that when a theft occurs, all four systems will detect it is .
Hence, the correct answer is a) .
Answer:
2500
Step-by-step explanation:
a² + 2ab + b²
49² + 98 + 1
Comparing terms
a²= 49²
a= 49
2ab = 98
2× 49 × b = 98
98b = 98
b= 98/98
b = 1
or
b²= 1
b=√1
b= 1
a=49 and b= 1
Hence (a+b)²= (49+1)²
50²= 2500
The product of 4xy and y² + 2x can also be written as
4xy(y² + 2x)
When we have brackets like this, we multiply whatever is left of the brackets by everything inside.
1) 4xy multiplied by y²
4xy x y² = 4xy³
2) 4xy multiplied by 2x
4xy x 2x = 8x²y
3) Add together 4xy³ and 8x²y
4xy³ + 8x²y
Answer:
y=-6
Step-by-step explanation:
y+6=0(x-5)
Solve
y=-6
