Enter the correct letter to match each summation expression with the property or n
Σca;
is equal to
n(n + 1)(2n + 1)
6
n
is equal to
b n(n + 1)
2
i=1
n
n
Σ
is equal to
«Σα;
i=1
i=1
n
3
is equal to
den
i=1
n
is equal to
[ n(n+1) 12
2
n )]
i=1

Jonathan pays $1.90 per pound for potatoes. he buys 8.3 pounds of potatoes. he determines that he will pay $15.77, before tax, for the potatoes. which best describes the reasonableness of jonathan’s solution? jonathan’s answer is reasonable because there are two decimal places in the factors and two in the product. jonathan’s answer is unreasonable because there are three decimal places in the factors and two in the product. jonathan’s answer is reasonable because is 16, and 16 is close to 15.77. jonathan’s answer is unreasonable because is 8, and 8 is not very close to 15.77.

Billy plotted −3 4 and −1 4 on a number line to determine that −3 4 is smaller than −1 4 is he correct? explain why or why not?

Which of the following shows the length of the third side, in inches, of the triangle below