When you square a negative number, the result is positive.
(-4)^2 = (-4)ª(-4) = 16
When you cube a negative number, the result is negative.
(-4)^3 = (-4)•(-4)•(-4) = -64
Negatives pair up and cancel out, so odd exponents always have one negative unpaired, making the result negative.
Answer:
the surface area us 53 in
Step-by-step explanation:
653 divided by 7= 93 2/7
456 divided by 4= 114
2354 divided by 9= 261 5/9
Answer:
A. 0.4
Step-by-step explanation:
Write 12 of 30 as a fraction:
12/30
Convert this to be a fraction over 100 by setting up an equation:
Variable x = proportional answer to 12/30
12/30 = x/100
Cross multiply:
12 × 100 = 30 × x
1200 = 30x
40 = x
40/100
Convert this number into a decimal by adding a zero and decimal point before the "4" in 40:
0.40
Simplify:
0.40 = 0.4
I converted it into a decimal through the use of fractions, but you can also find the answer by doing long division: 12 ÷ 30. However, showing work for long division over a message is too complex so I solved the problem this way instead.
Assuming that the 15 samples has a normal distribution. then the fraction of the sharpened pencil = 5 / 15 = 1 / 3
then solve the total number of pencil in the box
total pencil = (20) / ( 1 / 3)
total pencil = 20*3
total pencil = 60
so the number of unsharpened pencil = 60 - 20 = 40 pencils
