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Andreyy89
2 years ago
15

-2x - 8 + 5x = -8 - x + 12 a: x =6 b: x = 3 c: x = 5 d: x = 4

Mathematics
2 answers:
ella [17]2 years ago
8 0

Answer:

x = 3

Step-by-step explanation:

hope this helps <3

serious [3.7K]2 years ago
5 0

Answer:

X=3

Step-by-step explanation:

mark as brainliest plz

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Sumalee bought seven Anjou pears for<br> $5.50. How many pears can Stefan buy if<br> he has $22?
Alex17521 [72]

Answer:

4

Step-by-step explanation:

22 ÷ 5.50 = 4

Hope this helps!

5 0
2 years ago
ahmad had a balance of $46 in his checking account he made a deposit of $56 and wrote checks for $17 and $30 his bank charged hi
poizon [28]
Ahmad should have $52 left
6 0
3 years ago
Read 2 more answers
Why does sin54°≈0.809≈cos36° in a right triangle?
allsm [11]

9514 1404 393

Answer:

A

54° and 36° are complementary angles in the same right triangle. sin54° is the ratio of the opposite leg and the hypotenuse and cos36° is the ratio of the adjacent leg and the hypotenuse. In this triangle, the opposite leg of 54° and the adjacent leg of 36° are the same leg in the triangle.

Step-by-step explanation:

The answer explains itself.

The sum of angles in a triangle is 180°. When one of the angles is 90°, the sum of the other two angles is also 90°. That means those two acute angles are <em>complementary</em> (not supplementary).

The mnemonic SOH CAH TOA reminds you that ...

  Sin = Opposite/Hypotenuse

  Cos = Adjacent/Hypotenuse

7 0
2 years ago
What conclusion can be made when r, the correlation coefficient between two variables, is 0?
IgorLugansk [536]
The correlation coefficient between two variables, r, is always going to be between -1 and 1.

- If the correlation coefficient is 0, means that there is no strong correlation relationship in one direction or the other direction. 
- If the correlation coefficient is -1, means that these two variables move in opposite directions.
- If the correlation coefficient is 1, means that these two variables move in the same direction.
6 0
3 years ago
Sam used his calculator to find the answer and wrote down cos 1.75 = 0.999. Does this seem like a reasonable answer to you? What
Elan Coil [88]

 

Since pi is equivalent to 3.14 and means 180°, therefore 1.75 which is about half of pi should be at almost 90°. The cos of a 90° angle which is located on the y axis should be zero, therefore cos 1.75 must be near zero. However in this case it is near one, clearly his calculator is in degree mode that is why he got an erroneous answer.

What Sam can do to get the correct answer would be to convert his calculator into radian mode or convert the given 1.75 rad into degrees:

θ = 1.75 rad (180° / π rad)

θ = 100.2676

<span>cos 100.2676 = -0.1782   which is now correct since it is nearer to zero</span>

7 0
3 years ago
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