For place values that occur to the left of the decimal point, each place value is ten times ______ than the place value to its right.a. exponential
b. fractional
c. smaller
d. larger
Answers
Final answer:
Each place value to the left of the decimal point in a number is ten times larger than the place value to its right.
Explanation:
In mathematics, specifically in the idea of place value, each position to the left of the decimal point is ten times larger than the place value to its right. For example, in the number 1234.0, the '1' is in the thousands place, which is ten times larger than the hundreds place where '2' is located. Likewise, the '2' in the hundreds place represents a value that is ten times larger than the tens place where '3' resides, and so on.
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Pretty please help guys!!
Answers
The total area of the complete lawn is (100-ft x 200-ft) = 20,000 ft².
One half of the lawn is 10,000 ft². That's the limit that the first man
must be careful not to exceed, lest he blindly mow a couple of blades
more than his partner does, and become the laughing stock of the whole
company when the word gets around. 10,000 ft² ... no mas !
When you think about it ... massage it and roll it around in your
mind's eye, and then soon give up and make yourself a sketch ...
you realize that if he starts along the length of the field, then with
a 2-ft cut, the lengths of the strips he cuts will line up like this:
First lap:
(200 - 0) = 200
(100 - 2) = 98
(200 - 2) = 198
(100 - 4) = 96
Second lap:
(200 - 4) = 196
(100 - 6) = 94
(200 - 6) = 194
(100 - 8) = 92
Third lap:
(200 - 8) = 192
(100 - 10) = 90
(200 - 10) = 190
(100 - 12) = 88
These are the lengths of each strip. They're 2-ft wide, so the area
of each one is (2 x the length).
I expected to be able to see a pattern developing, but my brain cells
are too fatigued and I don't see it. So I'll just keep going for another
lap, then add up all the areas and see how close he is:
Fourth lap:
(200 - 12) = 188
(100 - 14) = 86
(200 - 14) = 186
(100 - 16) = 84
So far, after four laps around the yard, the 16 lengths add up to
2,272-ft, for a total area of 4,544-ft². If I kept this up, I'd need to do
at least four more laps ... probably more, because they're getting smaller
all the time, so each lap contributes less area than the last one did.
Hey ! Maybe that's the key to the approximate pattern !
Each lap around the yard mows a 2-ft strip along the length ... twice ...
and a 2-ft strip along the width ... twice. (Approximately.) So the area
that gets mowed around each lap is (2-ft) x (the perimeter of the rectangle),
(approximately), and then the NEXT lap is a rectangle with 4-ft less length
and 4-ft less width.
So now we have rectangles measuring
(200 x 100), (196 x 96), (192 x 92), (188 x 88), (184 x 84) ... etc.
and the areas of their rectangular strips are
1200-ft², 1168-ft², 1136-ft², 1104-ft², 1072-ft² ... etc.
==> I see that the areas are decreasing by 32-ft² each lap.
So the next few laps are
1040-ft², 1008-ft², 976-ft², 944-ft², 912-ft² ... etc.
How much area do we have now:
After 9 laps, Area = 9,648-ft²
After 10 laps, Area = 10,560-ft².
And there you are ... Somewhere during the 10th lap, he'll need to
stop and call the company surveyor, to come out, measure up, walk
in front of the mower, and put down a yellow chalk-line exactly where
the total becomes 10,000-ft².
There must still be an easier way to do it. For now, however, I'll leave it
there, and go with my answer of: During the 10th lap.
Answers
ounces
Enter a number like 212or 52.
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Bowl of Curry = C
1 Hour = H
----------------
A restaurant requires 4 + 1/2 ounces of butter for every bowl of curry it makes...
C = 9/2 * B
In an hour, an average of 2 + 1/2 bowls of curry is served...
H = 5/2 * C
... Which means that: H = 5/2 * 9/2 * B
... So: H = 45/4 * B
The question was: How many ounces of butter are required in 1 + 1/2 hours?
Here is the answer:
3/2 * H = 3/2 * 45/4 * B
3/2 * H = 135/8 * B
In words, 16 + 7/8 ounces of butter would be required over a period of 1 + 1/2 hours.
Answers
-4x - 5y - z = 18
-2x - 5y -2z=12
-2x + 5y +2z=4
A) (4,0,2)
B) (-4,0,-2)
C) (-4,2,0)
D) (-4,0,2)
Answers
Answer:
B
Step-by-step explanation:
When we have multiple answers, we can check each to find the solution. Each ordered pair is written as (x,y,z). We substitute each into the equations to find which satisfy all equations and which do not.
A) (4,0,2)
-4(4)-5(0)-(2)=18
-16-0-2=18
Not a solution
B) (-4,0,-2)
-4(-4)-5(0)-(-2)=18
16-0+2=18
18=18 is true. We now try the other equations.
-2(-4)-5(0)-2(-2)=12
8-0+4=12
12=12
We try the last equation.
-2(-4)+5(0)+2(-2)=4
8+0+-4=4
4=4
We no longer need to try C or D because a system of equations only has one solution. B is the solution.
Answers
=74,498.34