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arlik [135]
3 years ago
10

Which equation should she use? NO k= 2PX? Ok= -px? Ok= 2 X​

Mathematics
1 answer:
Alika [10]3 years ago
5 0

Answer:

k = 2P  /x^2

Step-by-step explanation:

P = 1/2 kx^2

Multiply each side by 2

2P = 2*1/2 k x^2

2P = k x^2

Divide each side by x^2

2P / x^2 = k x^2 / x^2

2P /x^2 =k

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Martin had 7 pounds of grapes left, and he gave away 2
katovenus [111]

Answer: 2/5 is closer 1/2. and it is easy to find half of 7 mentally. Half of 7 is 3.5, so Martin gave away about 3.5 pounds away.

3 0
3 years ago
Use the survey results to find the probability that a respondent has a​ pet, given that the respondent has had a pet.
Elena-2011 [213]

Answer:

Probability that the respondent has a pet given that the respondent has had a pet is  \frac{37}{81}  or 0.46.

Step-by-step explanation:

We are given the following results below;

37​% have a pet now and have had a pet.

63​% do not have a pet now.

81​% have had a pet.

19​% do not have a pet now and have never had a pet.

Let event B = respondent has a pet now

Now, Probability that the respondent has had a pet = P(A) = 0.81

Probability that the respondent has a pet now and has had a pet = P(A \bigcap B) = 0.37

So, Probability that the respondent has a pet given that the respondent has had a pet is given by = P(B/A)

<u>This conditional probability is solved as ;</u>

     P(B/A)  =  \frac{P(A \bigcap B)}{P(A)}

                 =  \frac{0.37}{0.81}  = 0.46.

3 0
4 years ago
Find x if Q is the midpoint of PR, PQ-19, and PR 8x + 14<br>a. 14. B7<br>C 3. D5​
Sonja [21]

Answer:

Step-by-step explanation:

If Q is the midpoint of PR and PQ is 19, that means that QR is also 19 and the total length of PR is 38. Therefore,

PQ + QR = PR and

19 + 19 = 8x + 14 and

38 = 8x + 14 and

24 = 8x so

x = 3

Your choice is C

3 0
3 years ago
HELP PLEASE!
navik [9.2K]
1. 
20= 2(x-4)
20/2= 2(x-4)/2
10= x-4
+4 .  +4
14=x
3 0
3 years ago
Read 2 more answers
Which is the biggest fraction 1/5 or 1/10
lakkis [162]

Answer:

1/5 is biggest fraction

Step-by-step explanation:

1/5 = 0.2

1/10 =0.1

⅕ > ⅒

8 0
3 years ago
Read 2 more answers
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