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daser333 [38]
2 years ago
14

2(x -9) = 9 divided ( - 1/3) what value of x makes the equation true plsss help :)))

Mathematics
1 answer:
Ivanshal [37]2 years ago
6 0

Answer:

x = -9/2

Step-by-step explanation:

1. Divide 9 by -1/3:

\frac{9}{1} ÷ -\frac{1}{3} = \frac{9}{1} · -\frac{3}{1}

= -27

2. Divide both sides by 2:

2(x - 9) = -27

\frac{2(x-9)}{2} = \frac{-27}{2}

(x - 9) = -\frac{27}{2}

3. Add 9 to both sides:

x = -\frac{9}{2}

(or 4.5 if you need it in decimal form)

hope this helps!

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Suppose the population of rats double every 4 days. If a house began with 4 rats on day 1, how many rats will there be after 4 m
tatuchka [14]
120 days in 4 months start day 1 with 4 rats every 4 days 4 rats add on so what I did is this.

Day 1= 4 rats day 4=8 day 8 = 12 so on intell u hit 118 days.but the answer to your question is.. there will be 114 rats if the population of rats double every 4 days for 4 months. hope this is correct and helps. :)
3 0
3 years ago
A kilobyte is 2^10 bytes and a megabyte is 2^20 bytes. How many kilobytes are in a megabyte?
yawa3891 [41]

Megabyte is equal to 1 million bytes, while kilobyte is equal to 1000 bytes.

Divide 1,000,000 with 1,000

1000000/1000 = 1000

There are 1000 kilobytes in 1 megabyte.

hope this helps

8 0
3 years ago
Can someone please help me with this? It’s the last problem I need to turn in a test, I will mark brainliest :(
stiks02 [169]

Answer:

33b - 8

Step-by-step explanation:

You solve for the perimeter like you would for any other shape by adding all the sides

The perimeter is side A + side B + side C.

so it's 9b+8 + 12b-8 + 12b-8

Add all the like terms

9b + 12 b + 12b = 33b

8 - 8 - 8= -8

= 33b -8

3 0
3 years ago
Tell weather the two rates form a proportion. help
Sindrei [870]
7/9 = 42/54...when 42/54 reduces, it becomes 7/9...so this is proportional because proportions are nothing but equivalent fractions.

u could also check it this way...
12/21 = 15/24
cross multiply
(21)(15) = (12)(24)
315 = 288.....these do not equal and are therefore, not proportionate

440/4 = 300/3
110 = 100....not equal, so not proportionate

120/5 = 88/4
24 = 22.....not proportionate

66/82 = 99/123
0.804 = 0.804.......these are proportional

68/172 = 43/123
0.395 = 0.349......nope, not proportional




6 0
3 years ago
Three gallons of gas cost $6.48. How much do 7 gallons cost?
prohojiy [21]

Answer:

$45.36

Step-by-step explanation:

you multiply 6.48 by 7 and your answer is $45.36

7 0
3 years ago
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