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Ierofanga [76]
3 years ago
15

How can you be sure that 9.9 ÷ 1,000 = 0.0099?

Mathematics
2 answers:
Nastasia [14]3 years ago
7 0

Answer:

When dividing by 1000, move the decimal point three places to the left (the last one)

Step-by-step explanation:


Ludmilka [50]3 years ago
7 0

you move the number of zeros to the left

When dividing by 1,000, move the decimal point three places to the left.

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Dilate line f by a scale factor of 2 with the center of dilation at the origin to create line f. Where are points A' and B' loca
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Answer:

Option A

Step-by-step explanation:

We are given that

Scale factor=2

Center of dilation=(0,0)

Point A(0,2) and point B (2,0).

Slope of line f=\frac{y_2-y_1}{x_2-x_1}

Substitute the values

Slope of line f=\frac{0-2}{2-0}=-1

Distance between  A and Origin (0,0) is given by

OA=\sqrt{(0-0)^2+(0-2)^2}=2 units

Using distance formula

\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}

OB=\sqrt{(0-2)^2+(0-0)^2}=2 units

Length of OA'=2OA=2(2)=4 units

Length of OB'=2(OB)=2(2)=4 units

x-intercept of line f' at x=4

y-intercept of line f' at y=4

Therefore, the points A' and B' are given by

(0,4) and (4,0)

Slope of line f'=\frac{0-4}{4-0}=-1

Slope of line f and f' are equal.Therefore, lines f and f' are parallel.

Option A is true.

4 0
3 years ago
8.1 ÷ 0.9+0.4^3 ÷ 0.8 ⋅ 30
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Step-by-step explanation:

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