When you're writing things in scientific notation, the new spot for the decimal number always goes in between the first and second numbers that are not zeroes. For this problem, it'd be 1.4. Then, count how many times the decimal place moves to get to the new spot (#power of ten), which in this case is 4 times. The way I remember this next part is that if it has a negative exponent, the number you get when you solve is really small, so therefore the answer is 1.4× (10^-4)
I need help on 33 please help
1 answer:
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Answer:
The scale factor was used in the dilation is 3
Step-by-step explanation:
Dilation is a kind of transformation that changes the size of figures
Image of a figure by dilation and the figure are similar
If a triangle dilated by a scale factor k then its image is similar to it, and the constant ratio between their corresponding sides is equal to k
∵ Δ ABC is dilated to form Δ DEF
∴ Δs ABC and DEF are similar
- That mean their corresponding sides have constant ratio
equal the scale factor of dilation
∴
Size of Δ DEF is greater than size of Δ ABC, that means k > 1
∵ AC = 2 units
∵ DF = 6 units
∵
∴
∴ 3 = k
∵ The scale factor of dilation is equal to the constant ratio k
∵ k = 3
∴ The scale factor was used in the dilation is 3