Answer:
k = 5 and (6,2).
Step-by-step explanation:
Since (1,-1) is a solution of the equation 3x - ky = 8, so the point (1,-1) will satisfy the equation above.
Hence, putting x = 1 and y = -1 in the equation will give left-hand side = right-hand side.
So, 3(1) - k(-1) = 8
⇒ 3 + k = 8
⇒ k = 5 (Answer)
Therefore, the equation of the straight line is 3x - 5y = 8 ....... (1)
Now, putting x = 6 , then from equation (1) we get y = 2
Therefore, (6,2) is also a point on the graph of equation (1). (Answer)
Answer:
There are <u>12 marbles</u> in Daniel's set.
Step-by-step explanation:
Given:
Daniel has a set off green,blue and red.
The red marbles make up exactly half of the set.
The set has 2 blue marbles.
The green marbles in set are as twice of the blue marbles in set.
Now, to find the number of marbles in Daniel's set.
Let the number of marbles in Daniel set be 
So, the red marbles =

Blue marbles = 2.
And the green marbles =

According to question:



<em>Multiplying both sides by 2 we get:</em>
<em />
<em />
<em>Subtracting both sides by </em>
<em> we get:</em>

Therefore, there are 12 marbles in Daniel's set.
The third angle is 60 degrees. A triangle has 180 degrees so 180-30-90=60
Answer:
She would not have enough
Step-by-step explanation:
85x10=$850 divided by 12=70.8