A is NOT a function because for some values of x you get more than one y value. For example if x=2 you get 2 values for y.
b is a function because for each x you get ONLY one y
Answer:
I. 6x2 + 25x + 24 = 0 6x2 + 16x + 9x + 24 = 0 2x (3x +8) + 3 (3x + 8) = 0 (2x + 3) (3x +8) ... < y=1; = x<y I. 10x2 + 33x + 27 = 0 => 10x2 + 15x + 18x + 27 = 0 => 5x (2x + 3) + 9 (2x + 3) = 0 => (5x +9) (2x +3) ... x = —9/5, –3/2 II. ... (b) 62 (d) is TX TX II.
16) It would be: 6+5+3+2 - 1+3+6+4 = 16 - 14 = 2 in.
17) -8/2 + -6/1 + -9/3+ -6/2 = -4-6-3-3 = -16
Answer:
The first 3 pairs of expressions are equivalent.
Step-by-step explanation:
1. 2x + 50 = 100
subtract 50 on both sides and then divide by 2.
x = 25
180 - 100 = 80
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2. 7x - 4 = 87
add 4 on both sides and divide by 7.
x = 13
180 - 87 = 93
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3. 5x - 2 = 38
add both sides by 2 and divide by 5.
x = 8
180 - 38 = 142
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4. 14 + 6x = 134
subtract both sides by 14 and divide by 6.
x = 20
180 - 134 = 46
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5. x = 53
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6. x = 14
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