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lakkis [162]
3 years ago
8

Solve equation by finding square roots. 49x^2 - 16= -7

Mathematics
1 answer:
TEA [102]3 years ago
8 0

Answer:

Solve equation by finding square roots. 49x^2 - 16= -7

49x²-16= -7

49x²= -7 + 16

49x²= 9

find the square root of both sides

7x= 3

x= 3/7

Step-by-step explanation:

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Help with this question (100 points)
Masteriza [31]

Answer:

y = \frac{\pi}{3}

Step-by-step explanation:

using the addition formula for sine

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then

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for the 2 sides to be equal , then

cosy = \frac{1}{2} and siny = \frac{\sqrt{3} }{2}

then

y = cos^{-1} (\frac{1}{2} ) = \frac{\pi }{3}

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6 0
2 years ago
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user100 [1]

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Step-by-step explanation: im straight

4 0
3 years ago
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nikdorinn [45]

Answer:

x=45

Step-by-step explanation:

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8 0
3 years ago
Evaluate the expression, 7x+8(x-3). Assume that x=4.
NNADVOKAT [17]

Answer:

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Step-by-step explanation:

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8 0
3 years ago
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