Answer: (c), (a)
Step-by-step explanation:
Given
1. It is known that the amplitude of the wave is the distance between the maximum or minimum point from the centerline
from the graph, 
is the line about which the distance of the maximum and minimum point is the same i.e.
option (c) is correct
2. For graph second maximum point is 4 and the minimum point is -1, the amplitude is
option (a) is correct
33 + 87 + x = 180
120 + x = 180
x = 60
y + x = 180
y + 60 = 180
y = 120
Answer:
Step-by-step explanation:
Assuming the given logarithmic equation is
We interchange x and y to get:
We solve for y now:
We add 4 to both sides to get;
Divide through by 4:
He has eaten 7/21 already. if he eats 9/21 from the 14/21 left, he will have 5/21 left. the answer is d
Answer:
x²+5x - 150 = 0
Step-by-step explanation:
Let the length be y and width be x
If the length of a swimming pool is 10 more than 2 times the width, then;
y = 2x+10 ...1
Since the Area is 300m²
A = xy
300 = xy .... 2
Substitute 1 into 2
300 = x(2x+10)
300 = 2x²+10x
Rearrange
2x²+10x - 300 = 0
Divide through by 2
x²+5x - 150 = 0
This gives the required quadratic expression
