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denis23 [38]
3 years ago
6

Tell whether -2 is a solution of the intequality. 8-2x<12

Mathematics
1 answer:
Llana [10]3 years ago
6 0

Answer:

add 8 to 2 and then multiply the 8 with 12.

Step-by-step explanation:

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Joanna recorded the number of laps she swam during practice in one week.
Usimov [2.4K]

Step-by-step explanation:

Number for Breaststroke = 50

Number for Butterfly = 25

Ratio of Breaststroke to Butterfly

= 50 : 25 = 2 : 1.

The ratio value is 2/1.

7 0
2 years ago
A certain radioactive isotope decays at a rate of 2% per 100 years. if t represents time in years and y represents the amount of
gregori [183]
We rewrite the equation:
 y = y0 * e ^ (- 0.0002 * t)
 In this equation:
 I = represents the initial amount of the isotope
 We have then:
 89% of the isotope left:
 0.89 * y0 = y0 * e ^ (- 0.0002 * t)
 We clear the time:
 e ^ (- 0.0002 * t) = 0.89
 Ln (e ^ (- 0.0002 * t)) = Ln (0.89)
 -0.0002 * t = Ln (0.89)
 t = Ln (0.89) / (- 0.0002)
 t = 582.6690813
 round to the nearest year:
 t = 583 years
 Answer:
 
There will be 89% of the isotope left in about:
 
t = 583 years
7 0
3 years ago
Find three consctive postive integers such that the prodect of the median integer and the largest integer is 72
Tcecarenko [31]

Answer: 7,8,9

Step-by-step explanation:

Let the numbers be a, a+1 and a+2. Therefore, based on the question, this will be:

= (a + 1)(a + 2) = 72

a² + 2a + a + 2 = 72

a² + 3a + 2 - 72 = a

a² + 3a - 70 = 0

a² + 10a - 7a - 70 = 0

a(a + 10) - 7(a + 10)

a - 7 = 0

a = 7

Since a = 7

a + 1 = 7+1 = 8

a + 2 = 7+2 = 9

The numbers are 7,8 and 9

8 0
2 years ago
Plsssss helpppp!!!!!
Natali5045456 [20]

Answer:

x = 19.42

Step-by-step explanation:

8²+x²=21²

64+x²=441

-64      -64

x²=377

x=19.41648784

rounded is 19.42

3 0
3 years ago
Which is the equation of the given line? Please help!!
Julli [10]
Ok so I’m gonna be able and I’ll be back off the next month to go get home with my buddy and I’ll let go and I get the money from the store to you deliver it for me you know how much I appreciate you I appreciate your time so I’m glad I can 30$ 50$$$ 90$
7 0
3 years ago
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