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ratelena [41]
3 years ago
15

What is 2x+56=86? Get X by itself.

Mathematics
2 answers:
Alexeev081 [22]3 years ago
5 0

Answer:

x = 15

Step-by-step explanation:

svp [43]3 years ago
3 0

Answer: the answer is 15

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Round to the nearest ten and hundred 363
Greeley [361]
Nearest tenth it would be <em><u>360</u></em><em><u /></em><u /> because the ones digit (3) is less than 5 so we have to round down.

Nearest hundred would be <em><u>400</u></em><em><u /></em><u /> because the tens and ones digit (63) is closer to 400 than it is to 300. So we would have to round up.

Hope that helps :)
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3 years ago
For what values of x does the graph of f have a horizontal tangent? (Use n as your integer variable. Enter your answers as a com
BartSMP [9]
F(x) = x - 2sinx

To find for what values of x graph has tangents we need to differentiate function f(x).
f'(x) = 1-2cosx
Now, if we want to have horizontal tangents we need to make function f'(x) equal to 0 because at minimum or maximum of function f(x) tangent is horizontal.

1-2cosx = 0
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x = -pi/3 + 2*n*pi 

Explanation: cosx = 1/2 for both 60° and -60°. If we make one circle cosx will be equal to 1/2 for 420 and 300 degrees. Writing degrees in radians (using pi) we can write formulas above where 2*pi represents one full circle and n is an integer which represents how many circles we made.
5 0
3 years ago
What in the world is eighty plus forty
Maurinko [17]

Answer:

120

Step-by-step explanation:

Add more detail if it is a different question

8 0
3 years ago
emily read 24 fiction books and 2 nonfiction books. what is the reatio of the numberof fiction books she read to the total numbe
Salsk061 [2.6K]

Answer:

the ratio is 12:1

Step-by-step explanation:

2 nonfiction/24 fiction = 12/1

therefore the ratio is 12:1

3 0
3 years ago
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Answer this question pls? Its 20 pts
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Answer:

B   a = 180 -77-60

Step-by-step explanation:

The angles add to 180 degrees since they form a straight line

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6 0
3 years ago
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