Answer:
a. 14,000 pesos
b. 23 years
Step-by-step explanation:
Answer:
Look at the equations:
y
=
−
9
x
−
21
and
y
=
5
x
+
7
Because both equations equal (y), they both equal the same.
If an equations says "
y
=
−
9
x
−
21
" , that means we can replace (y) with
−
9
x
−
21
.
Therefore when i take the equation:
y
=
5
x
+
7
, we can replace (y) to get:
−
9
x
−
21
=
5
x
+
7
Now isolate (x):
−
9
x
−
21
=
5
x
+
7
⇔
−
21
=
14
x
+
7
⇔
−
28
=
14
x
⇔
x
=
−
2
Answer:
X = 14.48528137
Step-by-step explanation:
- ADD 72 TO BOTH SIDES
- SQUARE ROOT 72
- ADD 6
- X = 14.48528137
Answer:
D is the true statement
Step-by-step explanation:
A
h(4)=13 and h(20)=13, so h(4)=h(20) and it is not true that h(4)<h(20)
B
This is untrue as we can see that the graph reaches its peak at h(12), so it would be symmetric about the line t=12, not t=10.
C
This is untrue as for all values of t less than 24, the height above the ground, h(t), is greater than zero.
D
This is true because as we can see from the table, when t values are equal distances from 12 (eg. 8 and 16), their h(t) values are the same.
80 * 2^0 = 80*1 = 80g (amount initially)
<span>80 * 1/2 = 40 g (amount remaining after one half life) </span>
<span>80* (1/2)^2 = 80* 1/4 = 20 g (amount remaining after 2 half lives).</span>