Answer:
(-2, 3).
Step-by-step explanation:
x + 3y = 7
2x + 4y = 8
1 . x = 7 - 3y.
2. 2(7 - 3y) + 4y = 8
3. 14 - 6y + 4y = 8
-2y = -6
y = 3
4. Substitute y in the second equation:
2x + 4(3) = 8
2x = -14
x = -2..
Step-by-step explanation:
A quadratic graph will surely help you find the solutions
X2-x-2=0
x1=2 x2= -1
Substitute each of the x value in the original equation to get the y value
(2)^2-(2)-2= 0 (2,0)
(-1)^2-(-1)-2=-2 (-1,-2)
plot the coordinates on the graph,the graph should be a curve
Answer:
47% and 62%
Step-by-step explanation:
1. Drink
The probability that a student buys a drink is 0.47
Step-by-step explanation:
The probability that a student buys a drink will be given by;
( the number of students who bought a drink)/(the total number of students)
We are told that;
Of the 100 students who came to the movie, 62 bought popcorn and 47 bought a drink. Therefore, the required probability is;
47/100= 0.47
0.47 = 47%
2. Popcorn
For popcorn probability, it's basically the same.
The probabilty that a student buys popcorn is 0.62
The probability that a student buys popcorn will be given by;
( the number of students who bought popcorn)/(the total number of students)
So therefore,
62/100 = 0.62
0.62 = 62%
Using A, B & C as three weights write algebraic equations that say: ... Subtract the same value (or expression) from both sides of the equation. Multiply both sides of the ... 45) The square root of the sum of a and b is equal to c. 46)