Please help ASAP for the brainliest answer
2 answers:
Answer:
arithmetic sequence
Step-by-step explanation:
The next number is 21
Answer:
Triangular Number Sequence
21
Step-by-step explanation:
This sequence is called the Triangular Number Sequence.
To find the next term, add 6 to 15.
The next term in the sequence is 21.
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Answer:
or 
Step-by-step explanation:
or 
The two triangles formed will be ADB and BCD
Hope this helps :)
From the second:
2x-y=4
x=(4+y)/2 and applying this to first:
4+y+3y=12
4y+4=12
4y=8
y=2 and since x=(4+y)/2, x=3 so
x+y=2+3=5
Answer:
4
Step-by-step explanation:
thx for the points lol
The book is 540 pgs.....she has read 405....that leaves (540 - 405) = 135 pgs left to read.
135 / 540 = 0.25 = 25% <== what she has left to read
