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GarryVolchara [31]
4 years ago
9

3 + b/9 < 4show work please

Mathematics
1 answer:
Gekata [30.6K]4 years ago
8 0

First, before multiplying to cancel the fraction, let's isolate x by subtracting both sides by 3:

b/9 < 1

To cancel out the fraction, we multiply both sides by 9:

x < 9

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Answer:

4x-8

Step-by-step explanation:

y=-x2+6x-8

y=4x-8

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3 years ago
10. Mark built a fence around his clubhouse. The perimeter of the fence is 80 feet. The
Svetlanka [38]

Answer:

if the clubhouse is 4 sided then the length would be 25 ft

Step-by-step explanation:

15x2=30

80-30=50

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7 0
3 years ago
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Help!!!!!!!!!!!!!!!!!!!!
lapo4ka [179]
Well...   the segment FG = 4x + 3, the segment GH = 7x - 12, now, the
 
segment FH = FG + GH, those two fellows added up, and we know that FG and GH are both equal halves because G is the midpoint.

thus, FG = GH
or

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and fairly sure, you know how much that is.
7 0
3 years ago
HELP ASAP! PLS!! The Water Department checks the city water supply on a regular basis for
aleksandr82 [10.1K]

Answer:

B. 95% confident the average concentration of PCBs in the water supply is between 2.9 ppb and 3.5 ppb

Step-by-step explanation:

You are given the total number of samples, the concentration of lead, and the standard deviation. The standard deviation represents how inaccurate the estimation of the concentration of lead in the drinking water. This means that there can only possibly be a 0.3 ppb error in the estimation. 3.2-0.3=2.9, and 3.2+0.3=3.5

8 0
3 years ago
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Help me with this to and use pemdas or not
PtichkaEL [24]
(72÷2)³ - 7 · 9 ÷ 9

First, parenthesis

72÷2 is 36

Next, exponents.

36³ is 46656.

Then, multiplication.

7 · 9= 63

After that, division.

63 ÷ 9 is 7

Finally, subtraction.

46656 - 7 is 46649
4 0
3 years ago
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