Solve each problem, and express the answer in scientific notation. a. (
5
×
1
0
−
5
)
+
(
2
×
1
0
−
5
)
(5×10
−5
)+(2×10
−5
) b.
(
7
×
1
0
8
)
−
(
4
×
1
0
8
)
(7×10
8
)−(4×10
8
) c.
(
9
×
1
0
2
)
−
(
7
×
1
0
2
)
(9×10
2
)−(7×10
2
) d.
(
4
×
1
0
−
12
)
+
(
1
×
1
0
−
12
)
(4×10
−12
)+(1×10
−12
)

eat pineapple daily

Explanation:

live happily

43.452

step-by-step explanation:

284 times .153 = 43.452

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.