Answer:
4
Step-by-step explanation:
19 = 7 + 3r
12 = 3r
4 = r
Answer:
you do Length x Width x height
8 3/8 x 6 x 8 1/4 = 414.56
hope this helps :-)
Answer: 10, 11, & 12
<u>Step-by-step explanation:</u>
Let x represent the age of the youngest child.
Their ages are consecutive so,
Youngest: x
Middle: x + 1
Oldest: x + 2
The age of the Youngest squared (x²) equals 8 times the Oldest [8(x + 2)] plus 4.
x² = 8(x + 2) + 4
x² = 8x + 16 + 4
x² = 8x + 20
x² - 8x - 20 = 0
(x - 10)(x + 2) = 0
x - 10 = 0 or x + 2 = 0
x = 10 or x = -2
Since age cannot be negative, x = -2 is not valid
So, the Youngest (x) is 10
the Middle (x + 1) is 11
and the Oldest (x + 2) is 12
<em>Answer:</em>
–6.8
<em>Method:</em>
Counting backwards from –7 to –6.5
