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Ludmilka [50]
2 years ago
9

I need help with rates ratios and properties. ​

Mathematics
2 answers:
Anna71 [15]2 years ago
5 0

Answer: 13:15

26:30

39:45

52:60

Step-by-step explanation:

dem82 [27]2 years ago
3 0

Answer:

26 : 30

52 : 60

65 : 75

Step-by-step explanation:

15 x 2 = 30

13 x 2 = 26

26 : 30

15 x 4 = 60

13 x 4 = 52

52 : 60

15 x 5 = 75

13 x 5 = 65

65 : 75

Hvae an amazing day!

<u><em>PLEASE RATE!!</em></u>

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Which equation involves a prime quadratic and cannot be solved by factoring? A. x2 + 6x + 9 = 0 B. x2 − x − 6 = 0 C. x2 + 3x − 4
Hitman42 [59]

The answer is D, because the others can be solved. A when factored is equal to -3, when B is factored it is equal to 3,-1, when C is factored it is 1,-4. D can be solved but you will only get irrational numbers which can't be used.

4 0
3 years ago
Read 2 more answers
(13) The temperature on a cold winter day is 2 degrees below zero. In the night, the temperature drops an additional 14 degrees.
EastWind [94]
Well, in the first one, 2 degrees below zero is -2 degrees, and then it says that it dropped 14 degrees, which means it dropped -14 degrees, so to know the total amount it dropped you would just have to add -2 plus -14 which is -16 degrees, so your answer for the first question would be the last answer, -16 degrees.

For the second question, just know that whenever a negative number is BY ITSELF in parentheses, that means it is used like a positive number in the equation. So (-12) automatically becomes 12. Now, since the problem is asking for a SUM, (the answer to an ADDITION problem; when you add instead of subtract), you would turn that minus symbol to a plus symbol, and add normally to get your final answer; 30 + 12 = 42. To check if this is correct, just type in <span>30 – (–12) to a calculator and you'll get the same answer! :D
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5 0
3 years ago
Find the complex conjugate of the given number -1+4i
adell [148]
With every imaginary term, there are 2 complex conjugates with opposing signs. So if I had the term a+bi, the complex conjugate would be a-bi. So given your example of -1+4i, the complex conjugate would just be the opposite sign, now negative, to get -1-4i.
3 0
3 years ago
Don’t understand someone explain please
makvit [3.9K]

Answer:

Sin A = 11/61

Step-by-step explanation:

Reference angle (θ) = A

opp = 11

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Adj = 60

Sin θ = opp/hyp

Sin A = 11/61

3 0
3 years ago
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AveGali [126]

Step-by-step explanation:

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A = 244.65

4 0
3 years ago
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