Answer:
8a=32
Step by Step
Since David is 8x older than Nicole you could write Nicole as the age of a, so then David would be 8a. You are given David is 32 years old so you set 8a equal to 32.
Answer is 4
Nicole is 4 years old
8a=32
divide both sides by 8
Answer is 4
Answer:
Each one has two possibilites, so the total is 2*2*2*2 = 16
Step-by-step explanation:
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TTHT
TTHH
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HTTT
HTTH
HTHT
HTHH
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If you eliminate the duplicates, ie, the coins are identical, you get 4
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Answer: 22
Step-by-step explanation:
The area of the picture =l×b = 20×16=320
The length of the frame is 16
If the width is x ( and it's uniform)
672- 320= 352
Area of the frame = 16× x=352
x=352/16
x = 22
Answer:
≈0.68
Step-by-step explanation:
with what u have u can get 
so it will be equal 
/9 =43°13'49.75"
now u can get the sine
sin 43°13'49.75" ≈ 0.68
