1:0.05
I think this is the answer
We want to use a matrix to solve
-8x - 8y = -16
6x - 9y = -108
Before solving, simplify the equations as follows:
Divide the first equation by -8 to obtain
x + y = 2 (1)
Divide the second equation by 3 to obtain
2x - 3y = -36 (2)
In matrix form, the equations are

The determinant of the matrix is
D = (1)(-3) - (1)(2) = -5
Use Cramer's Rule.

Similalrly,

Answer: (-6, 8) or x = -6, y = 8
Answer:
1 = A
2 = D
3 = B
4 = C
Step-by-step explanation:
Answer:
Flying Disc should be 72
Step-by-step explanation:
circumference = πd
<u>HD Coin</u> C = 3π
9.42477796077
<u>Flying Disc</u>. C = 23π
<u><em>72.2566310326</em></u>
<u><em>
</em></u><u>Jar Lid </u> C = 8π
25.1327412287
<u>Flower Pot</u> C = 15π
47.1238898038
it takes 5 seconds to reach a height of 40 ft. and It takes 2.5 seconds to reach maximum height.
Let h(t) represent the height of the ball at time t.
Given that the height is given by:
h(t) = -16t² + 80t + 40
1) For the ball to reach a height 0f 40 ft, h(t) = 40, hence:
40 = -16t² + 80t + 40
16t² - 80t = 0
t(t - 5) = 0
t = 0 or t = 5
Hence it takes 5 seconds to reach a height of 40 ft.
2) The maximum height is at h'(t) = 0,
h'(t) = -32t + 80
-32t + 80 = 0
32t = 80
t = 2.5
It takes 2.5 seconds to reach maximum height.
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