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Thepotemich [5.8K]
2 years ago
9

Need help!!! Don’t understand at all…

Mathematics
1 answer:
ryzh [129]2 years ago
3 0
Cos A = adjacent/hypotenuse
Cos A = 9/26 = 0.346
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Help me please <br><br><br><br>I couldn't solve it​
inysia [295]

\text{L.H.S}\\\\=\dfrac{\sin^4 A - \cos^4 A}{ \sin A + \cos A}\\\\\\=\dfrac{(\sin^2 A)^2-(\cos^2 A)^2}{\sin A + \cos A}\\\\\\=\dfrac{(\sin^2 A + \cos^2 A)(\sin^2 A-\cos^2 A)}{\sin A + \cos A}\\\\\\=\dfrac{1\cdot(\sin A+\cos A)(\sin A - \cos A)}{\sin A +\cos A}\\\\\\=\sin A - \cos A\\\\\\=\text{R.H.S}~~~ \\\\\text{Proved.}

4 0
2 years ago
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Adrian is going on holiday.
Delicious77 [7]
Answer : 11kg
9 divided by 45 = 0.2 then 0.2 x 55 (which is the other part of the percentage) is 11
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3 years ago
Write 10x - 5y = 30 in slope intercept form
ladessa [460]
Slope intercept form is y = 2x - 6
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3 years ago
Write 0.083 as a fraction
Naily [24]

Answer:

083/1000.

Step-by-step explanation:

083, means. Since there are 3 digits in 083, the very last digit is the "1000th" decimal place. So we can just say that . 083 is the same as 083/1000.

3 0
3 years ago
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In March, Isaiah and Freddie had the same amount of money in their savings accounts. In April, Isaiah deposited $210 into his ac
MatroZZZ [7]
Let the amount deposited by each of them in march be m.
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Freddie increased the amount by 15%, this means that the amount of money in his account became: m+0.15m
since both values are still equal, we will equate both equations and solve for m.
m+210 = m+0.15m
0.15m = 210
m = 1400$
6 0
3 years ago
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