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fgiga [73]
3 years ago
5

Solution set: ∅ -2m + 5 = 2m + 5 -2m + 5 = -2m + 5 -2m + 5 = -2m - 5

Mathematics
1 answer:
antiseptic1488 [7]3 years ago
3 0

Answer:

The correct answer is C. -2m + 5 = -2m - 5

Step-by-step explanation:

The reason why this is the answer, is that when you go to solve, you will get an untrue statement. This means that we have no solution set to the equation. Solving is below.

-2m + 5 = -2m - 5 ----> Add 2m to both sides

5 = -5 (UNTRUE)

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A tree is leaning at a 5° angle from vertical, making an 85° angle with the ground. When the sun is at a 65° angle of elevation,
Vinvika [58]
D = 25 ft is the length of a shadow. L -  the length of a tree.
Two angles are 85° and 65° and the third is 180° - ( 65° + 85° ) =
= 180° - 150° = 30°.
We will use the Sine Law:
25 / sin 30° = L / sin 65°
25 / 0.5 = L / 0.9063
25 * 0.9063 = 0.5 L
22.6577 = 0.5 L
L = 22.6577 : 0.5
L = 45.3 ft.
Answer: the approximate length of the tree is 45.3 ft.


3 0
4 years ago
Please help.
Bad White [126]

Answer:

Parallel: a and b, p and q, p and r, q and r

PErpendicular: p&a, p&b, q&a, q&b, r&a, r&b

Step-by-step explanation:

Parallel lines have the same slope so both of the lines would be going in the same direction and will never cross each other.

Perpendicular lines cross at a 90 degree angle.

Technically you do not know if q&a and q&b are perpendicular because you do not know if there is a 90 degree angle

7 0
3 years ago
Read 2 more answers
Simplify x0 y-3/x2 y-1
Natali5045456 [20]

Answer:

x^0 y^-3 / x^2 y^-1  

= 1 /  x^2 y^-1 (y^3)  ...because  x^0 = 1 and  [(y^-1) (y^3)] = y^2

= 1/(x^2 y^2)



6 0
4 years ago
What is the perimeter of a square with an area of 120
Snezhnost [94]
If the area is 120, each length is root(120)

root(120) = 2*root(30)

so the perimeter is:

4 * 2 * root(30) = 8 root(30)

which is approximately 43.8
4 0
3 years ago
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lawyer [7]
I am not sure but I think is the last one!!!!
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3 years ago
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