Answer:
It can be 5 or 3
Step-by-step explanation:
let x = that number
x * (x - 8) = -15
xx - 8x + 15 = 0
xx - 3x - 5x + 15 = 0
x(x - 3) - 5(x - 3) = 0
(x - 5)(x - 3) = 0
then x = 5 or x = 3
Let's simplify step-by-step.
2
z
−
4
−
z
=
2
z
+
−
4
+
−
z
Combine Like Terms:
=
2
z
+
−
4
+
−
z
=
(
2
z
+
−
z
)
+
(
−
4
)
=
z
+
−
4
Answer:
Nico invest at 7% and at 3%
Step-by-step explanation:
we know that
The simple interest formula is equal to
where
I is the Final Interest Value
P is the Principal amount of money to be invested
r is the rate of interest
t is Number of Time Periods
in this problem we have
<em>At 7%</em>
substitute in the formula above
<em>At 3%</em>
substitute in the formula above
The total interest is equal to
I=I1+I2
I=$174
substitute
therefore
Nico invest at 7% and at 3%
<em>≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡Ф</em>
Answer:
= −2k^3 − k^2 + 8k
Step-by-step explanation:
Let's simplify step-by-step.
−2k^3 − 7k^2 + 5^k + 6k^2 + 3^k
= − 2k^3 + −7k^2 + 5k + 6k^2 + 3^k
<em>Combine Like Terms:
</em>
= − 2k^3 + −7k^2 + 5^k + 6k^2 + 3^k
= ( −2k^3 ) + (−7k^2 + 6k^2 ) + (5^k + 3^k)
<em>= −2k^3 + −k^2 + 8k</em>
<em>≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡≡Ф</em>
<em>Hope this helps!!! :)</em>
Answer:
Set 1: 4
Set 2: 9
The MAD of set 1 is 5 less than the MAD of set 2.