Answer:
8.1
Step-by-step explanation:
Answer:
Answer: A = (x + 20)(x + 10) − 12 is the correct answer
Step-by-step explanation:
We would take the length and width of the patio and subtract it by the area that does not need to be painted.
I got this right on the test!
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Step-by-step explanation:
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You're looking for a number <em>w</em> such that the numbers
{1 + <em>w</em>, 7 + <em>w</em>, 15 + <em>w</em>}
form a geometric sequence, which in turn means there is a constant <em>r</em> for which
7 + <em>w</em> = <em>r</em> (1 + <em>w</em>)
15 + <em>w</em> = <em>r</em> (7 + <em>w</em>)
Solving for <em>r</em>, we get
<em>r</em> = (7 + <em>w</em>) / (1 + <em>w</em>) = (15 + <em>w</em>) / (7 + <em>w</em>)
Solve this for <em>w</em> :
(7 + <em>w</em>)² = (15 + <em>w</em>) (1 + <em>w</em>)
49 + 14<em>w</em> + <em>w</em> ² = 15 + 16<em>w</em> + <em>w</em> ²
2<em>w</em> = 34
<em>w</em> = 17
Then the three terms in the sequence are
{18, 24, 32}
and indeed we have 24/18 = 4/3 and 32/24 = 4/3.
To solve this problem, we must first divide 23/9, which is already in itself an answer. Then, to express it as a mixed fraction you just need to find out how many times 9 can go into 23.
9 x 1 = 9
9 x 2 = 18
9 x 3 = 27
So, the most times 9 can go into 23 is 2 times.
That give us 2 pounds with a remainder of 5.
So, our mixed fraction is 2
