Answer:
(2, -4)
Step-by-step explanation:
1/2 x + 3/4 y = -2
2/3 x + 5/6 y = -2
4 (1/2 x + 3/4 y = -2 ) = -2(2x + 3y = -8) Multiply by -2 to eliminate the x's
6 (2/3 x + 5/6 y = -2) = (4x + 5y = -12)
<u> -4x - 6y = 16 </u> combine with the 2nd equation
-1y = 4
y = -4
plug -4 in for y to find x in either equation
1/2x + 3/4 (-4) =-2
1/2x - 3 = -2
1/2x = 1
x = 2
(2, -4)
Answer:
The time it will take Kalin will be 2h 33m
Step-by-step explanation:
First we will transform the numbers to work more comfortable
d = distance
v = velocity
v = 3 2/3 miles per hour = 3.33 mi/h
d = 4 1/4 milles = 4.25 mi
As the time it takes to go to the beach and back asks us, we have to do the distance 2 times
d = 4.25 mi * 2
d = 8.5 mi
To calculate the time it takes, we simply have to divide the distance by the velocity
t = d/v
t = 8.5 (mi) / 3.33(mi/h)
t = 2.55h
if we also want to express the minutes we can divide after the point .55 by 100 and multiply it by 60
(55/100)*60 = 33
t = 2h 33m
The time it will take Kalin will be 2h 33m
Every elephant gets 305 pounds of food.
2440 / 8 = 305
Solution:
Total Number of marbles in the Bag = 10 red, + 12 green,+ 15 blue,+ 8 red, +12 white, + 7 black= 64 marbles
→Probability of an event =
→Probability of choosing a Red Marble from (64 marble=10 R + 12 G + 15 B+8 r + 12 W + 7 B)=
→Probability of choosing a Green Marble from (64 marble=10 R + 12 G + 15 B+8 r + 12 W + 7 B)=
→Probability of choosing a Blue Marble from (64 marble=10 R + 12 G + 15 B+8 r + 12 W + 7 B)=
→Probability of choosing a red of another kind(r) Marble from (64 marble=10 R + 12 G + 15 B+8 r + 12 W + 7 B)=
→Probability of choosing a White Marble from (64 marble=10 R + 12 G + 15 B+8 r + 12 W + 7 B)=
→Probability of choosing a Black Marble from (64 marble=10 R + 12 G + 15 B+8 r + 12 W + 7 B)=