Answer:
Let x = the unknown cost of a single hot dog and y = the unknown cost of a single soft drink. We have two unknowns so we need two equations to find them.
Equation 1 - 10 hot dogs and 5 soft drinks cost $35; that is 10x + 5y = 35
Equation 2 - 7 hot dogs and 4 soft drinks cost $25.25; that is 7x + 4y = 25.25
First let's re-write equation 1 to solve for y:
10x + 5y = 35
5y = 35 - 10x (subtract 10x from both sides)
y = 7 - 2x (divide both sides by 5)
Next, let's substitute 7 - 2x for y in equation 2:
7x + 4y = 25.25
7x + 4(7-2x) = 25.25
7x + 28 - 8x = 25.25
-x + 28 = 25.25
x - 28 = -25.25
Solve for x, the cost of a single hot dog. Once you have that, use y = 7 - 2x to find the cost of a single soft drink.
Step-by-step explanation:
Hope it helpful
4*50 + 3*200 = 700
i hope this will help you
Answer:
Step-by-step explanation:
Ok so umm I literally have no idea or I’m too lazy but good luck
Answer:
a. 0.4
b. Not independent.
Step-by-step explanation:
a. We use the probability table attached below for our calculations.
-the probability that an agreement is reached on both sides is obtained from the table:
b. To determine whether the two events are independent, we compare the probabilities 
and 
where i denotes insurance and s denotes salaries:
Two events are considered to be independent, if and only if:
Hence, the events are not independent.
A and E
The absolute value of 2+x must equal 8 once we subtract 1 from each side.
This means 2+x can equal -8 or 8. If it is -8, x will equal -10, and if it is 8, x will equal 6.
