What I do in my school is Part over a Whole equals % over 100.
So the whole is 80, the percent is 80% over 100. We need to find the part so we cross multiply. 80×80% is 1600. Divide that by 100 and u get 16 points.
HOPE THAT HELPS!
A. P[TTTTH] = .55^4*.45 = .0412
<span>b. P[HHHT] = .45^4*.55 = .0226 </span>
<span>c. 1/.45 = 2.222 </span>
<span>d. 1/.55 = 1.818</span>
40•(420:x-37)=200 <span>означает

</span>
<span>разделите обе стороны на 40
</span><span>

</span>
<span>добавить 37 с обеих сторон

</span>
<span>умножить обе стороны на х
420=42x
</span><span>разделите обе стороны на 42
10=x
x=10
</span>
Answer:
2/3
Step-by-step explanation:
There are a total of (3+6) = 9 coins
P( dime) = dimes / total
= 6/9
= 2/3
The sum of the angles of a triangle is 180 degrees.
a + b + c = 180.
a + (a+10) + 2a = 180
3a + 10 = 180
3a + 10 - 10 = 180 - 10
3a = 170
a = 42.5 degrees
b= 52.5 degrees and c = 85 degrees.