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GREYUIT [131]
3 years ago
13

To find out how fast a tree grows, you can measure its trunk. A giant red oak's diameter was 248 inches in 1965. The tree's diam

eter had grown to 251 inches in 2005. Find the average rate of change in the diameter of the tree per year.
Mathematics
2 answers:
Semmy [17]3 years ago
6 0
The answer is 6.25 because you take 251 and divide it by 40 and you will end up with 6.25. The number 40 comes from the years 1965 to 2005. And the you just divide

shepuryov [24]3 years ago
5 0
The average rate a year is .7
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Kim’s lunch cost is 12.74 she included a tip of 15%
ANEK [815]

Answer:

The total cost of her lunch is $14.65

Step-by-step explanation:

15% of $12.74 is $1.91

12.74+1.91=14.65

4 0
3 years ago
Can anyone figure this out for me please? It would be greatly appreciated.
Ira Lisetskai [31]
Check the picture below.

now, to get how much is the area of the tiled section, we simply get the area of the whole pool, 53x26, which includes the tiles, and then subtract the area without the tile, the rectangle in the middle, and what's leftover, is the area of the tiled area.

\bf 53-4\frac{1}{2}-4\frac{1}{2}\implies 53-9\implies \boxed{42}
\\\\\\
26-4\frac{1}{2}-4\frac{1}{2}\implies 26-9\implies \boxed{17}
\\\\\\
\textit{so the area of the rectangle in the middle is}\implies 42\cdot 17\implies 714
\\\\\\
\textit{and the area of the whole pool is}\implies 53\cdot 26\implies 1378

\bf \stackrel{\textit{area of the whole pool}}{1378}~~-~~\stackrel{\textit{area of the middle rectangle}}{714}\implies \stackrel{\textit{area of the tiles}}{664}\\\\
-------------------------------\\\\
\textit{we know that is }\$5\frac{1}{2}\textit{ for a foot of tile, then}\stackrel{\textit{price of the tiles}}{664\cdot 5\frac{1}{2}}\implies 3652

8 0
3 years ago
Find the difference- (ab+3a+7)- (-5ab-2)
coldgirl [10]
<span>(ab+3a+7)- (-5ab-2)
=</span><span>ab+ 3a+ 7+ 5ab + 2
=3a + 6ab + 9</span>
3 0
3 years ago
Write an absolute value inequality that has 3 and -5 as two of its solutions
tino4ka555 [31]
Absolute value makes all things inside positive (make result positive)
so one example is
|x+1|=4
so if you had 3 in it woul dyhave
|3+1|=4
|4|=4
4=4
true

if -5
|-5+1|=4
|-4|=4
4=4
treu
8 0
3 years ago
What number should be added to both sides of the equation to complete the square x^2+3x=6
Allisa [31]
Take half of the coefficient of x:  It is 3, and half that is 3/2.


Then   <span>x^2+3x=6  becomes:

</span><span>           x^2+3x + (3/2)^2 =6 + (3/2)^2, and

             (x+3/2)^2 = 6 + 9/4

You were not asked to solve the equation, but why not do it for the practice?

</span>Solve (x+3/2)^2 = 6 + 9/4 for x.  There will be 2 values.
8 0
3 years ago
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