(0, 4) and (2, 0) are the coordinates
Answer:
A, B, C and D. are solutions.
Step-by-step explanation:
x^2 + y^2 = 13
x^2 - y^2 = 5
Check which roots fit the original equations:
If x = 3, A gives
9 + y^2 = 13 giving y = +/- √4 = 2 or -2.
Now plug in x = 3 and y = 2 in the second equation:
9 - (2)^2 = 5
Therefore (3,2) is a solution of the 2 equations.
Following the same procedure for B, C and D:
B. Substituting x = 3 and x = -2 fits both equations so (3, -2) is a solution.
The same is true for C and D.
Answer:
y = 3x + 5
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Here m = 3 , then
y = 3x + c ← is the partial equation
To find c substitute (1, 8 ) into the partial equation
8 = 3 + c ⇒ c = 8 - 3 = 5
y = 3x + 5 ← equation of line
You must add all sides together to get the perimeter.
The perimeter is 24
Answer:
Q20:
267.99 - 98.65 - 14.77 - 3.67 - 0.87 - 2 = $148.03
Q21:
Assumed 8 hours a day and he works 365 days a year
11 x 8 x 365 = $32120
Q22
467.99 - 98.65 - 14.77 - 3.67 - 0.87 - 2 = $348.03
Q23
0.64 = 64%
Q24
0.453 = 45.3%
Q25
0.025 = 2.5%
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