if there are 48 students in a class and 42% of those students have a dog what percent of students have a dog or a cat?
1 answer:
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So convert to inprompery fractions
3 and 7/8=3+7/8=24/8+7/8=31/8
1 and 5/8=1+5/8=8/8+5/8=13/8
so each uses 1/4 cup
1/4=2/8
so
find the difference between 31/8 and 13/8
= 
so find how many 2/8 goes into 18/8
2/8 times what=18/8
multily both sides by 8/2 to clear faction
what=144/16=36/4=9/1=9
I made 9 sandwitches
3 and 7/8=3+7/8=24/8+7/8=31/8
1 and 5/8=1+5/8=8/8+5/8=13/8
so each uses 1/4 cup
1/4=2/8
so
find the difference between 31/8 and 13/8
so find how many 2/8 goes into 18/8
2/8 times what=18/8
multily both sides by 8/2 to clear faction
what=144/16=36/4=9/1=9
I made 9 sandwitches
Answer: 540 ft
<u>Step-by-step explanation:</u>
When given the equation in standard form y = ax² + bx + c,
the Axis of Symmetry can be found using the formula x = -b/(2a).
Plug that x-value into the given equation to find the y-value <em>which represents the max (if "a" is negative) or the min (if "a" is positive)</em>
y = -10x² + 160x - 100
↓ ↓ ↓
a= -10 b=160 c= -100
Max: y = -10(8)² + 160(8) - 100
= -10(64) + 1280 - 100
= -640 + 1180
= 540