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olga_2 [115]
3 years ago
7

Evaluate the expression when x = 1/2 and y = -2/5. Show all work.1. -x + y2. x +2y

Mathematics
1 answer:
NISA [10]3 years ago
4 0
I am old, so I like to use paper & pencil

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Please help. I just don’t feel like doing it rn
Dmitry [639]

Answer:

   mm

Step-by-step explanation:

5 0
2 years ago
Find the angle that the line through the given pair of points makes with the positive direction of the x-axis
Allisa [31]

Answer:

The answer to your question is Ф = 45°

Step-by-step explanation:

Data

A (1, 4)

B (-1, 2)

Process

1.- Find the slope of the line

formula

m = \frac{y2 - y1}{x2 - x1}

Substitution

m = \frac{2 - 4}{-1 - 1} = \frac{-2}{-2} = 1

Slope definition, is the steepness of a line and also is the tangent of the angle of the line.

                          tangent Ф  = slope

                          tangent Ф = 1

                                        Ф = tangent⁻¹ 1

                                        Ф = 45°

4 0
3 years ago
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Find the length of the third side. If necessary, write in simplest radical form.<br> 10<br> 7
oksian1 [2.3K]

Answer:

\sqrt{51}

Step-by-step explanation:

10²-7² (C squared minus B squared equals A squared) (basically Pythagorean theorem but reversed)

100-49= 51 (square the numbers and subtract)

\sqrt{51}  

6 0
2 years ago
Solve <br> 4x+5x-27=15-12x
Aleks [24]

Answer:

x=2

Step-by-step explanation:

8 0
2 years ago
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A man walks 10 miles an ex hours how far does he walk in one hour which expression represents
kenny6666 [7]

Answer:

1 hour = 10/x

Step-by-step explanation:

Example: the man walks 10 miles in 5 hours. How many in 1 hour: 10/5= 2 miles

7 0
3 years ago
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