5/8=0.625
7/12=0.583......
5/8 is bigger as ive put both into a decimal as it is easier to tell
okay so, first what is the slope of the line? you have stated it is -1.
so now we have a point on the line (x1,y1) = (4, -9), so now we can use:
y-y1 = m(x-x1)
y - (-9) = -1 (x - 4)
y + 9 = -x + 4
y = -x + 4 -9
y = -x -5
Let's check. If x = 4, then
y = - (4) -5 = -9
seems to be correct
1) 7* 2* 3* i just know the first one sorry
Answer:
x
=
2
±
√
7
Explanation:
there are no whole numbers which multiply to - 3
and sum to - 4
we can solve using the method of
completing the square
the coefficient of the
x
2
term is 1
∙
add subtract
(
1
2
coefficient of the x-term
)
2 to
x2
−
4
x
⇒
x
2
+2(−
2
)
x
+
4
−
4
−
3
=
0
⇒
(
x
−
2
)2
−
7
=0
⇒
(
x
−
2
)
2
=
7
take the square root of both sides
⇒
x
−
2
=
±
√
7
←
note plus or minus
⇒
x
=
2
±
√
7←
exact solutions
I’m gonna say it’s 168 because:
First u just do it as if the block has nothing missing so 10•8•3=240 and then u find the volume for the missing space which is 4•3•6=72
240-72=168 <= I think is the answer