No it's not
a^2=b^2+c^2
125^2=30^2+122^2
15625=900+14884
15625=15784
15625is not equal to 15784 so it is not right angle
19) 15/a = 3/2
Start by cross multiplying....
3a = 30
Divide both sides 3
a = 10
21) 2/7 = 4/d
2d = 28
d= 14
23) 8/p = 3/10
80 = 3p
p = 26.66
25) 2 / -5 = 6/t
2t = -30
t = -15
1. <span>(4, –1)
2. </span><span>(8, –1)
3. </span><span>(6, 2)
To graph these, just go on desmos.com/calculator and type the equations in.</span>
Vertical, because when two angles are across from each other they are the same angle measurement.
Answer:
f(8) = 192
Explanation:
f(x) varies directly with x²
This means that:
f(x) = kx²
where k is the constant of proportionality.
Now, we are given that:
f(x) = 75 at x = 5
Substitute to get k as follows:
f(x) = kx²
75 = k(5)²
75 = 25k
k = 3
This means that the equation is:
f(x) = 3x²
Now, to find f(x) at x = 8, all we have to do is substitute with x = 8 in the equation as follows:
f(8) = 3*(8)²
f(8) = 3*64
f(8) = 192
Hope this helps :)