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nadya68 [22]
3 years ago
5

Look below :) Everything is underneath, ty. Just need an answer by Wednesday

Mathematics
1 answer:
mamaluj [8]3 years ago
6 0

Answer:

Step-by-step explanation:

\dfrac{3}{6}=\dfrac{9}{18}=\dfrac{27}{54}

\dfrac{3*3}{6*3}=\dfrac{9}{18}\\\\\\\dfrac{3*9}{6*9}=\dfrac{27}{54}

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What is x + 8 = .5?
lions [1.4K]
X + 8 = 0.5

Take away 8 from both sides:

x = 0.5 - 8

x = -7.5

Answer: x = -7.5
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4 years ago
Divide. 5 ÷ 5 /6 = help me fast !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Licemer1 [7]

The answer is 6

I hope this helped :)

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4 years ago
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What number must be added to the expression below to complete the<br> square?<br> x² - 18x
kiruha [24]

Answer:

\boxed {\boxed {\sf 81}}

Step-by-step explanation:

The standard form of a quadratic is:

ax^2+bx+c

To complete the square, the a (leading coefficient) must be 1 and there can only be terms with variables on one side.

The expression given:

x^2-18x

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(\frac{b}{2})^2

The b in the expression is -18.

(\frac{-18}{2})^2

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5 0
3 years ago
the 7th grade has 207 students. there are 23 more girls than boys in the grade. how many boys are in the 7th grade
valkas [14]

Answer:

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Step-by-step explanation:

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4 0
3 years ago
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Given: cosθ= -4/5 , sin x = -12/13 , θ is in the third quadrant, and x is in the fourth quadrant; evaluate tan 1/2 θ
mrs_skeptik [129]

Answer:

Step-by-step explanation:

If you're looking for what the half angle of the tangent of theta is, I'm a bit confused as to why you think the angle in the 4th quadrant, x, is relevant.  But maybe you don't know it isn't and it's a "trick" to throw you off.  Hmm...

Anyways, the half angle identity for tangent is

tan(\frac{\theta}{2})=\frac{sin\theta}{1+cos\theta}

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tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{1+(-\frac{4}{5}) } which simplifies a bit to

tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{\frac{5}{5} -\frac{4}{5} }  and a bit more to

tan(\frac{\theta}{2})=\frac{-\frac{3}{5} }{\frac{1}{5} }

Bring up the lower fraction and flip it to divide to get

tan(\frac{\theta}{2})=-\frac{3}{5}*\frac{5}{1} which of course simplifies to

-3.  Choice A.

6 0
4 years ago
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