<span>x intercept when f(x) = 0
so
</span><span>x^2-81 = 0
x^2 = 81
x = + 9 and x = -9
Answer
</span><span>C -9</span>
HAHA funny. The angle stays the same. 59 degrees.
Answer:
y = -7/5x
Step-by-step explanation:
First, we need to use the two points to find the slope.
m = y₁ - y₂ / x₁ - x₂
m = -7 - 0 / 5 - 0
m = -7/5
Now we know that the slope is -7/5. Now we'll substitute the information we've gathered into the point-slope form equation to get an equation.
y - y₁ = m(x - x₁)
y - (-7) = -7/5(x - 5)
y + 7 = -7/5x + 7
y = -7/5x
Therefore, the equation of the line is y = -7/5x.
Answer:
the surface area of the cylinder in terms of pi=2πrh+2πr² =2×π×7×18+2π×7²=350πwhere
r=radius=7cm
h=height of the cylinder.=18cm
a.350πcm² is your answer
Answer:
the two numbers are 14 and 19
Step-by-step explanation:
x + y = 33
x - y = 5 ⇒ x = y + 5
substitute x = y + 5 in x + y = 33
y + 5 + y = 33
2y + 5 = 33
2y = 33 -5
2y = 28
y = 28/2
y = 14
x = 14 + 5
x = 19
