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Svetradugi [14.3K]
2 years ago
7

Kaitlyn was asked to find which expression below is equivalent to -3x + 5(x + 2)?

Mathematics
2 answers:
Flura [38]2 years ago
6 0

Answer:

C is the answer

Step-by-step explanation:

just myltiply 5 with bracket

NISA [10]2 years ago
4 0
The correct answer is c (2x+10)
I think her error was that she multiplied he numbers wrong
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J is the midpoint of HK¯¯¯¯¯¯¯ . What are HJ, JK, and HK?
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Since J is the midpoint of HK, that means HK is split into two sections HJ and JK that are the same length.

1) You are told that the m<span>easure of segment HJ = 9x-2 and that of segment JK = 4x+13. Since you also know they are equal lengths, you can set these equations equal to each other to find the value of x!
HJ = JK
</span>9x-2 = 4x+13
5x = 15
x = 3

2) Now you know x = 3. Plug that into your given equations for HJ and JK to find the length of each segment (or a shortcut would be to find one of them, and then you also know the other is the same length. I'm doing both, just to make sure I don't make a silly mistake!):
HJ = <span>9x-2 
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HJ = 27 - 2
HJ = 25

JK = 4x + 13
JK = 4(3) + 13
JK = 12 + 13
JK = 25

3) Finally, the length of HK is just the length of HJ + JK, or HK = 25 + 25 = 50.

-----

Answer: HJ = 25, JK = 25, HK = 50
4 0
3 years ago
In how many ways can 7 people line if A needs to be first or last and B needs to be in the middle
12345 [234]

Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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Answer:

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Step-by-step explanation:

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yawa3891 [41]

Answer: He will have 3,200 in 5 years.

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