Answer:
Step-by-step explanation:
Pythagoras theorem
a^2=b^2+c^2
(x-2)^2=9^2+(x+1)^2
x^2-4x+4=81+x^2+2x+1
Collect like terms
-4x-2x=82-4
-6x=78
x=-13
Answer:
a = 16
Step-by-step explanation:
4/8= 1/2
you have to what 8 is half of
8×2= 16
a=16
Interior angle+exterior angle=180
10x +10 +3x -12 =180
13x-2=180
13X+182
X=14 sides
![\cfrac{\sqrt{36}\cdot 3^2-\sqrt[3]{-64}}{2^2}\implies \cfrac{\sqrt{6^2}\cdot 3^2-\sqrt[3]{(-4)^3}}{2^2}\implies \cfrac{6\cdot 3^2-(-4)}{2^2} \\\\\\ \cfrac{6\cdot 9-(-4)}{4}\implies \cfrac{54-(-4)}{4}\implies \cfrac{54+4}{4}\implies \cfrac{58}{4}](https://tex.z-dn.net/?f=%5Ccfrac%7B%5Csqrt%7B36%7D%5Ccdot%203%5E2-%5Csqrt%5B3%5D%7B-64%7D%7D%7B2%5E2%7D%5Cimplies%20%5Ccfrac%7B%5Csqrt%7B6%5E2%7D%5Ccdot%203%5E2-%5Csqrt%5B3%5D%7B%28-4%29%5E3%7D%7D%7B2%5E2%7D%5Cimplies%20%5Ccfrac%7B6%5Ccdot%203%5E2-%28-4%29%7D%7B2%5E2%7D%20%5C%5C%5C%5C%5C%5C%20%5Ccfrac%7B6%5Ccdot%209-%28-4%29%7D%7B4%7D%5Cimplies%20%5Ccfrac%7B54-%28-4%29%7D%7B4%7D%5Cimplies%20%5Ccfrac%7B54%2B4%7D%7B4%7D%5Cimplies%20%5Ccfrac%7B58%7D%7B4%7D)
notice, PEMDAS
groups first, then Exponents, then Multiplication and Division from left-to-right, then Addition and Subtraction from left-to-right last.
Answer:
there is no question
Step-by-step explanation: