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slavikrds [6]
3 years ago
9

What are the solutions of the equation

Mathematics
2 answers:
notka56 [123]3 years ago
7 0
X²+4x+4=25
x²+4x+4-25=0
x²+7x-3x-21=0
x(x+7)-3(x+7)=0
(x+7)×(x-3)=0
x+7=0
x-3=0

x=-7
x=3

so your answer is x=-7 x=3
TEA [102]3 years ago
5 0
The solutions will be:
X = -7
And
X = 3
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Option 1. cos (a) = \frac{3}{5}, option 3. sin (a) = \frac{4}{5}, and option 5. tan (a) = \frac{4}{3} are true about the right triangle.

Step-by-step explanation:

Step 1:

According to the Pythagorean theorem, the square of the hypotenuse is equal to the sum of the squares of the other two sides.

Here the hypotenuse measures 15 units. Assume the other side measures x.

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Step 2:

sin \theta = \frac{oppositeside}{hypotenuse} ,cos \theta = \frac{adjacentside}{hypotenuse} , tan \theta = \frac{oppositeside}{adjacentside}.

For angle A, the opposite side is 12 units long, the adjacent side is 9 units long and the hypotenuse is 15 units long.

sin (a) = \frac{12}{15} ,cos(a) = \frac{9}{15} , tan(a) = \frac{12}{9}.

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Answer:

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Step-by-step explanation:

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