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julsineya [31]
3 years ago
11

Please help thank you ​

Mathematics
1 answer:
Eduardwww [97]3 years ago
3 0

Answer:

its (C) or (B) but my answer would be (B)

Step-by-step explanation:

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Alica wrote these numbers:2 9 15 21 which of alicas numbers is not a composite number
natka813 [3]

Answer:

2, because 2 can only be divided by 1 and itself, and thats what a prime number is

3 0
3 years ago
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How do you solve the system:<br> y+1=2x<br> 5y+5=10x
Marta_Voda [28]

Answer:

choose "infinitely more solutions"

Step-by-step explanation:

Let's solve this system by substitution method

y+1=2x

- 1 = - 1

y = 2x -1   <-- sbstitute this in the next equation

---------------------------------------------------------------------------------

    5y+5 = 10x

5(2x -1) + 5 = 10x

10x -5 + 5 = 10x

10x + 0= 10x

- 10x = -10x

0 = 0      <-- infinitely more solutions

4 0
2 years ago
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On the blueprint for Joey's new house,his floor measures 9 square feet.The actual house will have an area of 1296 square feet.Wh
bonufazy [111]

Answer:

1:144 ft²

Step-by-step explanation:

9 : 1296

1 : x

9x = 1296

x = 1296/9

x = 144

Scale factor = 1:144

6 0
3 years ago
Nine times the difference of a number and five is the same as 5 increased by nine times the number plus five times the number .
horsena [70]
9(x-5)=5+(9x+5x)
9x-45=5+14x
9x-14x=45+5
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X=50/-5
X=-10
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Determine whether the triangles are congruent by sss sas asa aas or hl
VladimirAG [237]

Answer:

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