What are the solutions for Y=x^2+6x+8
1 answer:
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Answer: 28 feet.
Step-by-step explanation:
Given: During the winter months, freshwater fish sense the water getting colder and swim to the bottom of lakes and rivers to find warmer water.
The total depth of the lake = 32 feet
Since, fish swims 7/8 of the depth, then the depth of lake to which the fish swim=
Since,
therefore,
Hence, the fish swim 28 feet in lake.
Given:
PQRS is a rectangle and XY is parallel to PS.
RY = 9 cm, QR = a cm and YS = b cm
Area of PQRS = 84 cm²
Area of PXYS = 21 cm²
To find:
The value of a and b.
Solution:
RS = 9 + b
Area of rectangle = length × width
Area of PQRS = QR × RY
QR × RS = 84
----------- (1)
Area of PXYS = XY × PS
XY × PS = 21
(since QR = XY)
----------- (2)
Substitute (2) in (1).
Subtract 21 from both sides, we get
Divide by 9 on both sides, we get
a = 7
Substitute a = 7 in (2).
Divide by 7 on both sides, we get
b = 3
The value of a is 7 cm and b is 3 cm.