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Luba_88 [7]
2 years ago
12

3x-8= 4

Mathematics
2 answers:
BabaBlast [244]2 years ago
4 0
I think the answer is D but i could be wrong
likoan [24]2 years ago
3 0
I believe the answer is D
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Answer:

b + b + 7 = 23

2b + 7 = 23

Step-by-step explanation:

b = girls

b + 7 = boys

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Andrew answered 21 out of 25 questions correctly on his math test. Written as a decimal, what portion of Andrew's answers were c
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Since we are calculating the amount that he got correct, we must divide the numerator by the denominator or make the denominator equal 100. I will do it the second way as it is easier in this case.

25*4 = 100
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84/100 = 0.84

As a decimal, Andrew got 0.84 of his test correct. Hope this helps!
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3 years ago
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Ann uses the equation y=9.75x to calculate the total cost y in dollars for x posters how much would she spend on 4 posters?
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Simplify <br> cosx ( tanx+cotx)
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The first step to solving this is to use tan(t) = \frac{sin(t)}{cos(t)} to transform this expression.
cos(x) × ( \frac{sin(x)}{cos(x)} + cot(x) )
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cos(x) × ( \frac{sin(x)}{cos(x)} +  \frac{cos(x)}{sin(x)} )
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Using sin(t)² + cos(t)² = 1,, simplify the expression. 
cos(x) × \frac{1}{cos(x)sin(x)}
Reduce the expression with cos(x).
\frac{1}{sin(x)}
Lastly,, use \frac{1}{sin(t)} = csc(t) to transform the expression and find your final answer.
csc(x)
This means that the final answer to this expression is csc(x).
Let me know if you have any further questions.
:)
4 0
3 years ago
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