The answer would be D. 200 - 20d.
This is because the question asks for pages left after reading for "d" (however many) hours. Since the book has 200 books, you'd subtract from that number since it's the "starting number" of pages. If he reads 20 pages per hour, you would multiply those together to get how many he has read, then subtract that number from 200, to get the amount of pages left.
I hope this helps!
Answer:
y = -2x - 1
Step-by-step explanation:
y = -(x+5)2 + 9
Foil method to get rid of parenthesis
y= -2x - 10 + 9
y = -2x - 1
Have a great day!
(Please mark this question as brainiest if it worked or ask me a question if you do not understand)
Answer:
<em>The answer to your question is Domain is 2. Then the range is 4..</em>
Have a wonderful day, and I hopes it helps! I wasn't exactly sure about my answer, but I'm sure that it is right! ^^'
Answer:
The expression for the nth term is Tn = 8n -7
Step-by-step explanation:
Here, we are to find an expression for the nth term of the sequence.
Mathematically, the nth term of an arithmetic sequence can be expressed as;
Tn = a + (n-1)d
for T2, the equation is
a + d = 9
for T4, the equation is
a + 3d = 25
we can substitute the equation of T2 into T4 but we first need to rewrite T4
a + d + 2d = 25
9 + 2d = 25
2d = 25 -9
2d = 16
d = 16/2
d = 8
now since a + d = 9
a = 9-d
a = 9-8
a = 1
So the expression for the nth term would be;
1 + (n-1)8
1 + 8n - 8
= 8n -8+1
= 8n -7
