C. Perform the following operations using a scientific calculator. Provide both the calculator answer as well as the answer rounded according to the rules for significant figures.
Calculation
Calculator answer
Rounded Answer
(include units)
1
1.35 m x 2.467 m
2
1035 m² / 42 m
3
12.01 mL + 35.2 mL + 6 mL
4.
55.46 g - 28.9
5
0.021 cm x 3.2 cm x 100.1 cm
6
0.15 cm + 1.15 cm + 2.051 cm
7
150 L / 4L
8
505 kg - 450.25 kg
002
9
1.252 mm x 0.115 mm x 0.012 mm
10' (1.278 x 103 m²)/(1.4267 x 102 m)
D.

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

step-by-step explanation:

the answer is 128

5 + 8 +7 + 4 + 0 +1 = 25

step-by-step explanation: