Write the quadratic equation whose roots are 2 and -6, and whose leading coefficient is 1 .(Use the letter to represent the variable.) =0
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What is the reflection image of (5, -3) across the line y = -x?
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Writing a recursive formula.. 16, 10, 7, 5.5, 4.75... I know a1 is 16. But what is the formula? Help. Lol
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25.) Simplify the radical expression by rationalizing the denominator....
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1.5÷60=0.025 per second
30÷0.025=1200 second
1200÷60 =20 hours
20 hours
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You can work out 'd' or the hypotenuse using Pythagoras's theorem:
a^2 + b^2 = c^2
Because we are looking at half of the triangle, we have to half the base, 14m. So you get 7m. But the height of the triangle, 5m, stays the same.
So if you out the figures into the formula you'd get:
7^2 + 5^2 = d^2
To get 'd' you have to square root the first half of the equation. So you get:
√7^2 + 5^2 = d
The above is the answer :)
Which shape can be classified as a rectangle? (2 points)
a
Rhombus
Сь
Square
c
Trapezoid
d
Parallelogram
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Solve the system of equations by substitution.
(16/7, 19/7)
(-4/3, 19/3)
no solution
coincident
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x=5-y
nice
sub 5-y for every x you see in other equation
5(5-y)-2y=6
25-5y-2y=6
25-7y=6
minus 25 both sides
-7y=-19
divide both sides by -7
y=19/7
sub back
x=5-y
x=5-19/7
x=35/7-19/7
x=16/7
(16/7,19/7)
first one
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you cannot have sqrt of a negative
find where it equals zero
5-x=0
5=x
the limit is 5=x
x has to be greater than x
to infinity
D={x|x>5}