Answer:
A) The amount of change held by a teacher at the end of each day for a year.
Step-by-step explanation:
A normal distribution has a bell-shaped density curve described by its mean and standard deviation.
A) The amount of change held by a teacher at the end of each day for a year - This is probably near normal because the teacher cannot have negative cents in her or his pocket.
4x(x-2)=(2x+1)(2x-3)
in the first expression distribute the 4x, in the second expression FOIL
4x²-8x=4x²-6x+2x-3
combine like terms
4x²-8x=4x²-4x-3
subtract 4x² from each side
-8x=-4x-3
add 8x to each side
0=4x-3
add 3 to each side
3=4x
divide by 4 on each side
x= 3/4 or 0.75
The exponents should be multiplied in the last one because of the distributive property
Answer:
10.5 inches
Step-by-step explanation:
250% = 250/100 = 2.5
The plant grew 2.5 times its height in 5 weeks.
Be careful with the way you interpret "The plant grew by 250% of its height after 5 weeks." It means that in 5 weeks, the plant grew an amount equal to 2.5 times the original length of the plant. It does not mean that the total height at the end of 5 weeks was 2.5 times the original height.
growth is 5 weeks: 250% of 3 inches = 2.5 × 3 inches = 7.5 inches
height after 5 weeks: 3 inches + 7.5 inches = 10.5 inches
Answer:
6x+3/4x-1/2
I just figured this out i know how you feel.