Help pls i will mark brainleastly thingy
1 answer:
Answer:
(11y-36 degrees)=63 degrees
Step-by-step explanation:
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Don’t go to That link but I think it is d
69.58. 19.8x3=59.64 and 19.88/2 is 9.94. 59.64+9.94=69.58
Answer:
![\frac{1}{x^{5} }](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7Bx%5E%7B5%7D%20%7D)
Step-by-step explanation:
x^-12/ x^-7
= x^(-12-(-7))
= x^-5
= 1/x^5
Answer:
A = $32
B = $18
Step-by-step explanation:
50 - 14 = 36
36 ÷ 2 = 18
18 + 14 = 32
18 + 32 = 50
Answer:
![\huge\boxed{x+\dfrac{1}{x}=(13+2\sqrt{42})+(13-2\sqrt{42})=26}](https://tex.z-dn.net/?f=%5Chuge%5Cboxed%7Bx%2B%5Cdfrac%7B1%7D%7Bx%7D%3D%2813%2B2%5Csqrt%7B42%7D%29%2B%2813-2%5Csqrt%7B42%7D%29%3D26%7D)
Step-by-step explanation:
![x=\dfrac{\sqrt7+\sqrt6}{\sqrt7-\sqrt6}\cdot\dfrac{\sqrt7+\sqrt6}{\sqrt7+\sqrt6}=\dfrac{(\sqrt7+\sqrt6)^2}{(\sqrt7-\sqrt6)(\sqrt6+\sqrt7)}\\\\\\\text{use}\ (a+b)^2=a^2+2ab+b^2\ \text{and}\ (a-b)(a+b)=a^2-b^2](https://tex.z-dn.net/?f=x%3D%5Cdfrac%7B%5Csqrt7%2B%5Csqrt6%7D%7B%5Csqrt7-%5Csqrt6%7D%5Ccdot%5Cdfrac%7B%5Csqrt7%2B%5Csqrt6%7D%7B%5Csqrt7%2B%5Csqrt6%7D%3D%5Cdfrac%7B%28%5Csqrt7%2B%5Csqrt6%29%5E2%7D%7B%28%5Csqrt7-%5Csqrt6%29%28%5Csqrt6%2B%5Csqrt7%29%7D%5C%5C%5C%5C%5C%5C%5Ctext%7Buse%7D%5C%20%28a%2Bb%29%5E2%3Da%5E2%2B2ab%2Bb%5E2%5C%20%5Ctext%7Band%7D%5C%20%28a-b%29%28a%2Bb%29%3Da%5E2-b%5E2)
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