That answer would be like -10
Answer:
14.7 mi
Step-by-step explanation:
This can be solved with the Pythagorean Theorem. This represents a triangle where the length of a is 13, b is 7, and c is unknown.
We know that , and we can plug in what we know and use algebra to solve for c.
,
169 + 49 = c^2
218 = c^2, c^2 = 218
√c^2 = √218, or c = 14.7. The length from his home to his place of work is 14.7 mi
Let's call the number of pages that Jen wrote "j".
then tom (t) wrote:
What we know:
j=10t
this means:
t=0.1 j
and j+t=396
for this it's practical to substitute j with 10 t:
10t+t=396
11t=396
we divide both sides by 11:
t=36
so tom wrote 36 pages, and Jen wrote ten times as much, or 360 pages (that's a lot!)
Answer:
r = 2
r = -1
Step-by-step explanation:
So first, we need to get this is order of: ax^2 + bx + c
3r^2 - 6 - 3r
3^2 - 3r - 6
the formula is: -b ± √b^2 -4ac/2a
"ax^2 + bx + c" = "3^2 - 3r - 6"
a = 3
b = -3
c = -6
-b ± √b^2 -4ac/2a
-(-3) ± √(-3)^2 -4(3)(-6)/2(3)
3 ± √9 + (-12)(-6)/6
3 ± √9 + (72)/6
3 ± √9 + 72/6
3 ± √81/6
3 ± 9/6
3 - 9/6
-6/6
-1 = r
3 + 9/6
12/6
2 = r
Formula down below --
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