Terms are the different things being added/subtracted. There are 5 terms.
Answer:
-2x, -8= -x, x, -8
Step-by-step explanation:
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The answer is B. 6.3 * 10^6
6.3 * 10^6 = 6,300,000
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Answer:
- A -- base 3, height 4
- B -- base 4, height 4
- C -- base 3, height 3
- D -- base 3, height 5
Step-by-step explanation:
A sort of straightforward way to approach this is to define base and height variables for each of the figures: ba, ha, bb, hb, bc, hc, bd, hd. Then the statements can be used to make equations in these variables.
0. hc = bc . . . . figure C is a square
1. ba = bd
2. ba = bb -1
3. hc = ba
4. hb = ha = bb
5. hc·bc = 9
6. (1/2)ha·ba +(1/2)hb·bb +hc·bc+hd·bd = 38
__
Using equations 0 and 5, we find ...
hc² = 9 ⇒ hc = 3
From equation 3, ...
ba = 3
From equation 2, ...
3 = bb -1 ⇒ bb = 4
From equation 1, ...
bd = 3
From equation 4, ...
ha = hb = 4
Filling in the values we know in equation 6, we get ...
(1/2)(4)(3) +(1/2)(4)(4) +9 +hd(3) = 38
23 +3hd = 38
hd = 15/3 = 5
The dimensions are:
- A -- base 3, height 4
- B -- base 4, height 4
- C -- base 3, height 3
- D -- base 3, height 5
