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Inga [223]
2 years ago
8

Assume that y varies inversely as x. If, y, is 2.4 when x = 5, which is an equation that relates x and y?

Mathematics
1 answer:
Firlakuza [10]2 years ago
4 0
K=y•x
Inverse means 1/variable
y=k•1/x
y=k/x
k=y•x

x=5
y=2.4
k=2.4 • 5
k=12

Answer is:

y=12/x

Good luck.
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Y= -1/2(x+10)^2+14 Find the range
Andre45 [30]

Answer:

Step-by-step explanation:

y=-1/2(x+10)^2+14

2y=-(x+10)^2+28

(x+10)^2=28-2y

L.H.S.  is  positive.

so 28-2y≥0

28≥2y

or 2y≤28

or y≤ 14

Range is (-∞,14]

8 0
3 years ago
Find the slope of the line passing through the points (-6, 7) and (7, 7).<br> slope: 0
Free_Kalibri [48]

Answer:

m=0

Step-by-step explanation:

4 0
2 years ago
  How many pounds of 65­cent coffee must be mixed with 10 pounds of 90­cent coffee to make a mixture worth 70 cents per pound? A
trasher [3.6K]
The answer is 90 100%sure it's 90
7 0
3 years ago
Archie is stranded in a war zone in the land of the Xhosas. His only chance of survival is to reach Sudland, which lies 100 mile
LenaWriter [7]

Answer:

The  chances of success for Archie is P(S|D) =  35\%

Step-by-step explanation:

From the question we are told that

 The distance of Sudland from Xhosas is   d =  100 miles

  The probability  of failure is  P(F) = 0.26

  The probability of choosing the desert route is   P(D) = \frac{1}{40} =  0.025

The probability of reaching Sudland through the mountain is  P(S|M) =0.75

Generally the probability of choosing the  mountains route is

         P(M) = 1 - P(D)

           P(M) = 1 - 0.025

             P(M) = 0.975

Generally the probability of success is mathematically represented as

       P(S) =  1- P(F)

         P(S) =  1- 0.26

          P(S) =  0.74

       

Generally the probability of success in reaching Sudland is also mathematically represented as

     P(S) =  P(S|M) * P(M) + P(S|D) * P(D)

=>   P(S|D) =  \frac{P(S) - P(S|M) * P(M)}{P(D)}

substituting values

=>  P(S|D) =  \frac{0.74 - 0.75 * 0.975}{0.025}  

=>  P(S|D) = 0.35  

=>  P(S|D) =  35\%

8 0
2 years ago
Write down the cube numbers between 10 and 100​
Alex

Answer:

27 and 64

Step-by-step explanation:

3^3 is 27

4^3 is 64

3 0
3 years ago
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