√(4²+4²)=4√2
√(4√2)²+4²=4√3
answer is 4√3
Answer:
See below
Step-by-step explanation:
3x-429 + x/4 = 130 shows x = 172
QSN = 3x -429 = 87 degrees
HSX = 87 degrees
HSQ = 180 -87 = 93 degrees
XSN = x/4 = 43
PSN = 93 - 43 = 50
Answer:
231
Step-by-step explanation:
Given
Cross Multiply
Therefore x=231
Answer:
64
Step-by-step explanation:
(2x + 3y)^2 = 4
xy = -5
4x^2 + 9y^2
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(2x + 3y)^2 = 4 [Start here]
4x^2 +12xy + 9y^2 = 4 [Expand]
4x^2 +12(-5) + 9y^2 = 4 [Substitute xy = -5]
4x^2 -60 + 9y^2 = 4
4x^2 + 9y^2 = 4 + 60 [Rearrange]
4x^2 + 9y^2 = 64 [64 is the value of 4x^2 + 9y^2]