Plzz i need this fast! how can you write the expression (28 + 70) as a multiple of a sum of whole numbers with no common factor? optionsa.  1 × (28 + 70)b.  2 × (14 + 35)c.  7 × (4 + 10)d.  14 × (2 + 5)e.  28 × (1 + 5)and i know its not c plz

So remember that GCFs are greatest common factors, or the greatest number and/or variable that divides 2 or more terms nicely (aka no decimals).

With this, you at least know that a factor of these two numbers is 7, which turns this expression to 7(4 + 10). However, what's inside the parentheses can still be factored out with a GCF of 2. So you can further factor the expression as 2 * 7(2 + 5), which can be simplified to 14(2 + 5), or D. Since 2 and 5 do not have GCFs greater than 1, that is your answer.

i did it myself and i got 4.2 (b) hope its right

step-by-step explanation:

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation: