Answer:
b = 17.55
Step-by-step explanation:
a^2 + b^2 = c^2
4^2 + b^2 = 18^2
16 + b^2 = 324
<u>-16 -16</u>
b^2 = 308
square root them
<u>b = 17.55</u>
let me know if it is correct!
First let us find the slope:
Points (x , y) = (-2 , 1) and (5 , 8)
Slope m = (y₂ - y₁)/(x₂ - x₁) = (8 - 1) / (5 - -2) = 7/(5 + 2) = 7/7 = 1
Slope m = 1.
Equation of a line by point slope form y - y₁ = m(x - x₁)
Using the point (5, 8) x₁ = 5, y₁ = 8, m = 1
y - y₁ = m(x - x₁)
y - 8 = 1(x - 5)
y - 8 = 1*(x - 5) Point slope form of equation
But let's just simplify further
y = x - 5 +8
y = x + 3
<span>Equation is also y = x + 3
</span>Hope this helps.
Answer:
what number
Step-by-step explanation:
what number do you need to know
Answer:
Step-by-step explanation:
I don not understand what is for 4 here. So there are 2 cases:
Case 1: If you mean: log[4(x+20)]= 3
We know 3 = log(10^3)= log(1000)
So we have log[4(x+20)]= log(1000)
so 4(x+20)= 1000
and x+20 = 1000/4
x+20 = 250 and finally x= 250-20, x=230
The solution is 230.
Case 2; If you mean that 4 is the base of logarithm.
and we know that
So we have
and x+20 = 81
or x= 81-20
x=61
The answer is 61.
Hope that useful for you, both cases.