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Ber [7]
3 years ago
15

Which of these procedures is the same as multiplying a whole number by 100? (A) Multiply the whole number by 2, ten times. (B) M

ove the decimal point two places to the left and fill in the blank places with zeros (C) Move each digit of the whole number to the left and fill in the blank places with zeros (D) Add 100 to the whole number, 2 times.
Mathematics
1 answer:
Zigmanuir [339]3 years ago
8 0

Answer:

C) Move each digit of the whole number to the left and fill in the blank places with zeros

Step-by-step explanation:

When we multiply a number by 10, we add a zero to the right of the whole number.

2 * 10  = 20

When we multiply a number by 100, we add 2 zeros to the right of the whole number

2 * 100 = 200

However many zero's there are after the 1, when we multiply , we move the whole number by that many places and fill them with zeros.

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The area of a swimming pool is 120 sq meters. The width of the pool is 8 meters. what is the length of the pool in centimeters ?
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Answer 150cm
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A colony of bacteria is growing at a rate of 0.2 times its mass. Here time is measured in hours and mass in grams. The mass of t
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Answer:

See attachment below

Step-by-step explanation:

4 0
3 years ago
Tickets for a school play sold for $7.50 for each adult and $3.00 for each child. The total receipts for 118 tickets totaled $69
NeX [460]
X= number of adult tickets
y=number of child tickets.
we can suggest this system of equations: 
x+y=118                 ⇒x=118-y
7.5x+3y=696

we can solve this system of equations by substitution method:
7.5(118-y)+3y=696
885-7.5y+3y=696
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y=-189/-4.5
y=42

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Answer: the number of adult tickets sold was 76. 
7 0
3 years ago
What is a necessary step for constructing perpendicular lines through a point off the line?
Nostrana [21]

Answer:

Find another point on the perpendicular line.

Step-by-step explanation:

Given an original line "m", and a point off the line "Q", in order to construct a second line "p", meant to be perpendicular to "m" through the point "Q", fundamentally, the only truly necessary step to construct a perpendicular line through is to find another point on the yet-to-be-found perpendicular line.

Most often, this is accomplished by exploiting the fact that "p" is the set of all points that are equidistant from any pair of points that are symmetric about "p".

Since the symmetry must be about "p", and we don't even know where "p" is, one often finds two points on "m" that are equidistant from "Q".

This can be accomplished by adjusting a compass to a fixed radius (larger than the distance from "Q" to "m"), and making an arc that intersects "m" in two places.  Those two places will be equidistant from "Q", and are simultaneously on line "m".  Thus, these two points, "A" & "B" are symmetric about "p".

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To do this, fix the compass with any radius, and from "A" make a large arc generally in the direction of "B", and make the same radius arc from "B" in the direction of "A" such that the two arcs intersect at some point that isn't "Q".  This point of intersection we can call point "T", and the line QT is line "p", the line perpendicular to the original line, necessarily containing "Q".

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2 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
Serggg [28]

Answer:

dont know

Step-by-step explanation:

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3 years ago
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