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Jlenok [28]
3 years ago
13

Is it A,B,C,D.... pls explain thank you

Mathematics
2 answers:
Pavlova-9 [17]3 years ago
6 0
C is the answer and the equation to get that answer is 174.99=24.99 + 12.50m . M=months
Stella [2.4K]3 years ago
5 0
$24.99 + $12.50m = Cost for Gym Membership
$24.99 + $12.50m = $174.99

              $174.99 = $24.99 + $12.50m
$174.99 - $24.99 = $24.99 - $24.99 - $12.50m
              $150.00 = $12.50m
  $150.00/$12.50 = $12.50m/$12.50
                       12 = m

This membership will last 12 months.
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A large school district in southern California asked all of its eighth-graders to measure the length of their right foot at the
Ber [7]

Answer:

The probability of the sample mean foot length less than 23 cm is 0.120

Step-by-step explanation:

* Lets explain the information in the problem

- The eighth-graders asked to measure the length of their right foot at

  the beginning of the school year, as part of a science project

- The foot length is approximately Normally distributed, with a mean of

 23.4 cm

∴ μ = 23.4 cm

- The standard deviation of 1.7

∴ σ = 1.7 cm

- 25 eighth-graders from this population are randomly selected

∴ n  = 25

- To find the probability of the sample mean foot length less than 23

∴ The sample mean x = 23, find the standard deviation σx

- The rule to find σx is σx = σ/√n

∵ σ = 1.7 and n = 25

∴ σx = 1.7/√25 = 1.7/5 = 0.34

- Now lets find the z-score using the rule z-score = (x - μ)/σx

∵ x = 23 , μ = 23.4 , σx = 0.34

∴ z-score = (23 - 23.4)/0.34 = -1.17647 ≅ -1.18

- Use the table of the normal distribution to find P(x < 23)

- We will search in the raw of -1.1 and look to the column of 0.08

∴ P(X < 23) = 0.119 ≅ 0.120

* The probability of the sample mean foot length less than 23 cm is 0.120

4 0
3 years ago
The cost of 5m of cloth is ₹450. The cost of 8m of cloth is
enyata [817]

Step-by-step explanation:

Rs 720

Cost of 1 m of cloth = 450/5= Rs 90

Cost of 8 m of cloth= 90*80= Rs 720

7 0
3 years ago
Read 2 more answers
Find all real solutions of the equation. (if there is no real solution, enter no real solution.) 35x2 12x − 36
solmaris [256]
Important:  35x2 12x − 36 is not an equation; to obtain an equation, you must set <span>35x2 12x − 36 = to 0:

</span><span>35x^2 + 12x − 36 = 0.  Also, "the square of x" must be represented by "x^2," and you must insert either the + or the - sign in front of the term 12x.

I am assuming that you meant   </span>35x^2 + 12x − 36 = 0.

If that is indeed the case, then a = 35, b = 12 and c = -36

and the discriminant is b^2 - 4ac, or (12)^2 - 4(35)(-36) = 5184.

Since the discriminant is positive, this equation has 2 real, unequal solutions.  They are
        -12 plus or minus sqrt(5184)
x = -----------------------------------------
                         2(35)
7 0
3 years ago
2x^2y^5 + 4xy^3 please answer
irina [24]

Answer:

its B, the 2xy3...thingy

8 0
2 years ago
Not sure how to do these. i need help with 13! needing it to be reduced just like y should be 8
Delicious77 [7]

Answer:

I'm not sure 710

Step-by-step explanation:

I'm not sure

8 0
3 years ago
Read 2 more answers
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