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ollegr [7]
3 years ago
7

What is the answer?​

Mathematics
1 answer:
ki77a [65]3 years ago
5 0

Answer:

I think it should be -3, -1

Step-by-step explanation:

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Help asap please!<br><br> 2/5+????=7/10<br><br> Find the missing fraction
docker41 [41]

Answer:

3/10

Step-by-step explanation:

2/5 + x = 7/10

x = 7/10 - 2/5

x = 7/10 - 4/10

x = 3/10

8 0
2 years ago
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Biologists tagged 139 fish in a lake on January 1, On February 1, they returned and collected a random sample
Bogdan [553]

Answer:

417 fish

Step-by-step explanation:

139/(10/30)=139*3=417

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3 years ago
Can someone explain to me why are we adding 2kpi when we are doing zeros for sin and cos, but adding kpi when doing zeros for tg
makvit [3.9K]

on the first exercise, you got a solution angle of π/18, that's a good solution for the I Quadrant only, however, on a circle, we have angles that go from 0 to 2π, however we can always keep on going around and continute to 2π + π/2 or 3π or 4π, or 115π/3 or 1,000,000π/18 and so on, and we're really just going around the circle many times over, getting a larger and larger angle, same circular motion.

π/18 on that exercise works for the I Quadrant, however if we continue and go around say 2π, we'll find that 2π/3 + π/18 is a coterminal angle with π/18, and thus that angle has also the same sine value.

π/18 + 2kπ/3 , where k = integer, is a way to say, all angles around the circle that look like this have the same sine, namely

π/18 + 2(1)π/3

π/18 + 2(2)π/3

π/18 + 2(3)π/3

π/18 + 2(5)π/3

π/18 + 2(99999999)π/3

.....

so using the "k" as some sequence multiplier, is a generic notational way to say, "all these angles".

you'll also find that "n" is used as well for the same notation, say for example

2π/3  + 2πn.

8 0
2 years ago
Sven has 11 more than twice as many customers as when he started selling newspapers. He now has 73 customers. How many did he ha
Amiraneli [1.4K]
73-11 = 62

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3 0
2 years ago
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The product of two integers is -12 and the sum is -1. What are the numbers?
kupik [55]

Answer:

+3 and -4

Step-by-step explanation:

as

+3×-4=-12

and

-4+3=-1

3 0
3 years ago
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