28. 6x+42-20=6x
42-20=0
42-20 gives you 22
22=0
Statement is false
30. -2x-4=-2x-3-1
-2x-4=-2x-4
Statement is true because both sides are identical
32. 2x+8-5=2x+3
8-5=3
3=3
Statement is true for any value of x
34. 3x+(x+4)=18
3x+x+4=18
4x+4=18
4x=18-4
4x=14 (next divide both sides by 4)
x= 7 over 2
7/2
Answer:
. 2) It’s positive only if the first integer is greater
Answer:
550 + 3x > 1000, where x > 150
The quantities true for x are: x must be greater than 150
Step-by-step explanation:
The question claims he wants to earn OVER 1,000 that month. He already makes $550 and $3 PER PLANT he sells. Subtract $550 from $1000 and you would get 450. Then divide by 3. That makes 150 plants. So now we know the x needs to be GREATER THAN 150 plants to make over 1,000. The x would also go next to the 3 because the 3 represents how much per plant sold, and the 150 represents how many plants. The equation would be $550 + 3x > 1000, where x > 150.
Answer:
C
Step-by-step explanation:
It's stated that EFI is dilated by a scale factor of 1/3.
Dilating gives the following
FH = 1/3×FE
FG = 1/3×FI
HG = 1/3×EI
Sense ΔEFI is reflected over a line FG/FH = (1/3×FI)/(1/3×FE) = FI/FE
Notice that the following shows triangle similarity, meaning ΔEFI ~ ΔHFG.
The only answer choice that shows this would be FE/3 = FH, FI/3 = FH, and
EI/3 =HG ΔEFI ~ ΔHFG.
The answers are as follows; .275,.225, 2, .30
