You can solve this by setting up a proportion. You can put the number of items correct over the total number. and substitute the unknown number with x.
=
Cross-multiply
3400 = 100x Divide both sides by 100
34 = x
40 - 34 = 6
So, Jill got
6 questions wrong.
1+5, 2+4, 3+3. 3 ways to make 6
Answer:
B. 8x - 3
C. 8x + 12
Step-by-step explanation:
64 is a perfect square, meaning it has two factors that are identical (8), and 36 is also a perfect square, but in this case, you don't see two 6's in the answer choices.
12 and -3 give you a product of -36, so your answer choices would be:
(8x - 3) (8x + 12)
If you're unsure, you can multiply them together to check if they come out to the unfactorized expression.
The 0 holds the ten thousandths place as you can see here.
<span>9 tenths </span>
<span>8 hundredths </span>
<span>7 thousandths </span>
<span>0 ten thousandths </span>
3 hundred thousandths
Answer:
Standard Deviation, σ = 6.5828058860438
Step-by-step explanation:
<u>Data Set:</u> 20, 11, 27, 13, 29, 20
The total numbers in the data set
Count, N = 6
The sum is all values in the data set is added up
20 + 11 + 27 + 13 + 29 + 20
Sum, Σx: 120
The mean is the sim / N
Mean, μ: 20
