What is 21 times 21 thx
2 answers:
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Answer:
y =
Step-by-step explanation:
given y varies as the square of x then the equation relating them is
y = kx² ← k is the constant of variation
to find k use the given condition y = 25 when x = 3
k = =
⇒ y = x²
when x = 2
y = × 4 =
Answer:
31.5 cm²
Step-by-step explanation:
Calculate area of a triangle with this formula:
Area = base * height
Substitute in known values
Area = 7 * 9
Multiply 7 by 1/2
Area = 3.5 * 9
Multiply
Area = 31.5 cm²
Hope this helps :)
Two lines are perpendicular when the product between the slopes of the lines is equal to -1, then, if we have the following lines:
they will be perpendicular if,
According to the exercise, the first line is:
the slope for this line is -4.
Write the equation that makes two lines perpendicular,
solve for m2,
Answer:
The slope of the line perpendicular to y=-4x+7 is 1/4.