Answer: x = -2, y = -10
Step-by-step explanation:
solve for x first in the equation -2x+3=7
-2x+3=7
-2x = 4
x = -2
now plug that x value into the other equation so we can find y
3x+1 = 5+y
3(-2)+1 = 5+y
-6+1 = 5+y
-5=5+y
-10 = y
I think you mean to find b in terms of the constants a, c and d.
(x + a ) / b - c = d
(x + a) / b = c + d
Cross multily:-
x + a = b(c + d)
b = (x + a) / (c + d)
Given:
In ΔNOP, n = 910 inches, o = 110 inches and p=820 inches.
To find:
The measure of ∠P to the nearest degree.
Solution:
According to the law of cosine:

Using law of cosine in triangle NOP, we get

Putting the given values, we get




Taking cos inverse on both sides, we get



Therefore, the measure of ∠P is 33°.