19.q 20.d 21.6/7 22.6/7 23.b
Answer:
8+2i
Step-by-step explanation:
Combine like terms
3+5=8
4i-2i=2i
Answer:
A. 4/15 and 0.26 repeating
Step-by-step explanation:
As we see in the long division, 4/15 is equal to 0.26666666666666666666666 (or. 0.26 repeating).
4/15
4 doesn't go into 15, so add a zero.
4.0/15
40 goes into 15 twice
40 - 30 is 10. 10 is less than 15 so add a 0.
4.00
100 goes into 15 6 times.
100 - 90 is 10. 10 is less than 15, so add a 0.
The 100 into 15 process repeats, so there's your answer.
Answer:
Since length and width are perpendicular, Doubling either one will double the area. So Doubling both will quadruple the area. 2x2 = 4.
This idea works if the dimensions doubled are those that are used to compute area. Like the base and height of a triangle.
More generally, in a polygon, if all the sides are doubled, the area is multiplied by 4. In a circle, Doubling the radius will quadruple the area.
In 3 dimensions, Doubling one dimension will double the VOLUME. Doubling two perpendicular dimensions will quadruple the volume and Doubling 3 perpendicular dimensions will multiply the volume by 2x2x2 or 8.
Step-by-step explanation:
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