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Radda [10]
2 years ago
14

PLSS HELP ME WITH THIS! 20 POINTSS!

Mathematics
2 answers:
sineoko [7]2 years ago
6 0

Answer:

C

Step-by-step explanation:

In a proportional relationship, the constant of proportionality k is:

k = y/x

Check this ratio for each of the values

A)

7.5/5 = 1.5 , 19.5/13 = 1.5 , 33/23 = 1.4347.... ← Thus <u>not</u> A

B)

9.5/8 = 1.1875 ← Thus <u>not</u> B

C)

12/8 = 1.5 , 13.5/9 = 1.5 , 27/18 = 1.5

Therefore, the table with k = 1.5 is Table C.

sertanlavr [38]2 years ago
5 0
A since that is the only one that the right number divided by the left number equals 1.5
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A square fits exactly inside a circle with each of the vertices being on the circumference of the circle. The square has sides l
NNADVOKAT [17]

Answer: The value of x is 5.970.

Step-by-step explanation:

Given: The square has sides length of X cm.

Let r be the radius of the circle.

The square fits exactly inside a circle with each of the vertices being on the circumference of the circle.

Then diagonal of square = diameter of circle

i.e. \sqrt{2}x= 2r    [Diagonal of square = \sqrt{2}(side)]

i.e. r=\dfrac{x}{\sqrt{2}}

area of circle =\pi r^2

i.e. 56=\frac{22}{7}(\frac{x}{\sqrt{2}})^2

56=\frac{22}{7}\times\frac{x^2}{2}\\\\\Rightarrow\ x^2= \dfrac{7}{11}\times56\\\\\Rightarrow\ x^2=35.636\\\\\Rightarrow\ x=\sqrt{35.636}\approx5.970

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4 0
3 years ago
1962.5 nearest tenth
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Minor surgery on horses under field conditions requires a reliable short-term anesthetic producing good muscle relaxation, minim
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Answer:

We accept  H₀

Step-by-step explanation:

Normal Distribution

size sample   n  = 69

sample mean  18.94

standard deviation  8.3

Is a one tailed-test to the left we are traying of find out is we have enough evidence to say that the mean is less than 20 min.

1.-Test hypothesis                              H₀         ⇒   μ₀  =  20

   Alternative hypothesis                  Hₐ         ⇒    μ₀  < 20

2.- Critical value

for α = 0.1  we find from z Table

z(c) = - 1.28

3.-We compute z(s)

z(s) = [ (  μ  -  μ₀ ) / (σ/√n)                ⇒    z(s) = [( 18.94  -  20  )*√69)/8.3]

z(s) = ( -1.06)*8.31/8.3                    

z(s) =  - 1.061

4.- We compare

z(c)   and z(s)           -1.28 > -1.061

Then z(c)    >  z(s)

z(s) in inside acceptance region  so we accept H₀

5 0
3 years ago
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