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elena-14-01-66 [18.8K]
3 years ago
14

Convert 89.25 cm = km ​

Mathematics
1 answer:
scZoUnD [109]3 years ago
3 0

Answer:

Answer

Step-by-step explanation:

Converted to kilometers, 89.25 centimeters would be 0.0008925 kilometers

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Test the claim that the proportion of men who own cats is smaller than the proportion of women who own cats at the .10 significa
nata0808 [166]

Answer:

 The  test statistics is t  =   -1.40

  The critical value is  Z_{\alpha }   = 2.33

   The null hypothesis is rejected

Step-by-step explanation:

From the question we are told that

   The sample size  for men is  n_1 =  80

    The sample  proportion of men that own a cat is  \r p _M  =  0.40

     The  sample  size for  women is n_2  =  80

     The sample  proportion of women that own a cat is  \r p_F  =  0.51

     The level of significance is  \alpha  =  0.10

   The  null hypothesis is  H_o  :  \r p _M   =  \ r P_F

    The alternative hypothesis is  H_a  :  \r p _M  <  \r p_F

Generally the test statistic is mathematically represented as

        t  =    \frac{(\r p_M - \r p_F)}{\sqrt{\frac{(p_M*(1-p_M)}{n_1 } }  +  \frac{p_F*(1-pF)}{n_2 } }

=>  t  =    \frac{(0.40  - 0.51)}{\sqrt{\frac{(0.40 *(1-0.41)}{80} }  +  \frac{0.51*(1-0.51)}{80 } }

=>   t  =   -1.40

The critical value of  \alpha  from the normal distribution table is

     Z_{\alpha }   = 2.33

The p-value  is obtained from the z-table ,the value is  

    p-value =  P( Z < -1.40) =   0.080757

=>    p-value = 0.080757

Given that the p-value  <  \alpha then we reject the null hypothesis

7 0
3 years ago
If a ray divides an angle into two complementary angles then the original angle is a right angle True of false
mr_godi [17]
True. <span>As the new two angles are complimentary,
the original angle is a right angle</span>
7 0
3 years ago
If liquid A has a density of 5g/ml and liquid B has a density of 3g/ml what will happen if you pour them into the same glass?
galina1969 [7]
I think it’s option 4
6 0
3 years ago
Read 2 more answers
Write As Mathmatical Equation The Sum of a number and 12 times the number is 36
JulijaS [17]

Answer:

x + 12x = 36

Step-by-step explanation:

Let X = the number

12x would be 12 times the number

We need the sum of these two:

x + 12x = 36


6 0
3 years ago
2x + y =5 solve the system of equations by inspection
olga2289 [7]

Answer:

Slope=− 2.000/4.000 =−2.000

x−intercept= 2/5=2.50000

y−intercept= 1/5=5.00000

Step-by-step explanation:

Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation :          

2*x+y-(5)=0

Tiger recognizes that we have here an equation of a straight line. Such an equation is usually written y=mx+b

"y=mx+b" is the formula of a straight line drawn on Cartesian coordinate system in which "y" is the vertical axis and "x" the horizontal axis.

In this formula :

y tells us how far up the line goes

x tells us how far along

m is the Slope or Gradient i.e. how steep the line is

b is the Y-intercept i.e. where the line crosses the Y axis

The X and Y intercepts and the Slope are called the line properties. We shall now graph the line  2x+y-5  = 0 and calculate its properties

Notice that when x = 0 the value of y is 5/1 so this line "cuts" the y axis at y= 5.00000

 y-intercept = 5/1  =  5.00000

When y = 0 the value of x is 5/2 Our line therefore "cuts" the x axis at x= 2.50000

 x-intercept = 5/2  =  2.50000

Slope is defined as the change in y divided by the change in x. We note that for x=0, the value of y is 5.000 and for x=2.000, the value of y is 1.000. So, for a change of 2.000 in x (The change in x is sometimes referred to as "RUN") we get a change of 1.000 - 5.000 = -4.000 in y. (The change in y is sometimes referred to as "RISE" and the Slope is m = RISE / RUN)

   Slope     = -4.000/2.000 = -2.000

8 0
3 years ago
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