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Lunna [17]
3 years ago
9

Help! 10 points available

Mathematics
2 answers:
miss Akunina [59]3 years ago
8 0

the answer should be c

vlabodo [156]3 years ago
6 0

The correct answer is B, sqrt 2 / 2, which equals 0.70

If you put cos 45* into a trig calculator, you'll get 0.70 as well.

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HELP PLEASE
Maurinko [17]
\bf \cfrac{x^2-x-42}{x-6}\implies \cfrac{(x+7)\underline{(x-6)}}{\underline{x-6}}\implies x+7

so.. the left-hand-side does indeed simplify to x+7, so the equation does check out.

however, notice something, for the equation of x+7, when x = 6, we get (6) + 7 which is 13.

BUT for the rational, we get    \bf \cfrac{x^2-x-42}{x-6}\qquad \boxed{x=6}\implies \cfrac{x^2-x-42}{\boxed{6}-6}\implies \stackrel{und efined}{\cfrac{x^2-x-42}{0}}

so, even though the siimplification is correct, the rational or original expression is constrained in its domain.
6 0
3 years ago
Simplify the expression.<br><br> 7y + 4 + 9 - 2y PLEASE HELP ME MY LIFE DEPENDS ON IT
balu736 [363]

Answer:5y+13

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Find the area of this composite figure use 3.14 for pi
Vesna [10]

Answer:

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
*15 points* i'll give brainly to best answer
mina [271]

Answer:

1. 50 degrees.

2. 90 degrees

3. 50 degrees

Step-by-step explanation:

hope this helps!

6 0
3 years ago
What is 7 +2 = x-4/2​
madam [21]

Answer:

The answer is 11.

Step-by-step explanation:

We will use PEMDAS in this situation.

 7 + 2 = x - 4 / 2

 7 + 2 = x - 2             [divide first

 9 = x - 2                   [add the 7 and 2]

+2       +2                   [the 2 cancels out]

 11 = x

Your answer is 11.

I hope this helped!

<h2><u>PLEASE MARK BRAINLIEST!</u></h2>
7 0
3 years ago
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