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KengaRu [80]
1 year ago
5

Do the points on the linehave a constant ratio of they-coordinate to the x-co-ordinate for any point onthe line except the y-int

er-cept? Explain your answer.
Mathematics
1 answer:
kvasek [131]1 year ago
8 0
\begin{gathered} \text{the ratio asked is} \\ m=\frac{y}{x},\text{ which is the slope by taking the initial point as the origin} \\ when\text{ the line intercept the y axes, x =0} \\ \text{then } \\ m=\frac{y}{0} \\ \sin ce\text{ its a dividision by zero, the slope is infinite} \\  \end{gathered}\begin{gathered} \text{remember that the slope, in general, is given by} \\ m=\frac{y_2-y_1}{x_2-x_1} \\ \text{where, point A could be A=(x}_1,y_1)andpointBcouldbeB=(x_2,y_2) \end{gathered}\begin{gathered} \text{if you take as point A=(0,0), the slope equation is} \\ m=\frac{y_2}{x_2} \end{gathered}

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A. 0.75s+0.4t=980<br><br> B. 0.75s-0.4t=980<br><br> C. 0.75s+0.04t=980<br><br> D. 0.75s-0.04t=980
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What is a polygonomial
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See below

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2 years ago
A customer service phone line claims that the wait times before a call is answered by a service representative is less than 3.3
Vika [28.1K]

Answer:

(A) Yes, since the test statistic is in the rejection region defined by the critical value, reject the null. The claim is the alternative, so the claim is supported.

Step-by-step explanation:

Null hypothesis: The wait time before a call is answered by a service representative is 3.3 minutes.

Alternate hypothesis: The wait time before a call is answered by a service representative is less than 3.3 minutes.

Test statistic (t) = (sample mean - population mean) ÷ sd/√n

sample mean = 3.24 minutes

population mean = 3.3 minutes

sd = 0.4 minutes

n = 62

degree of freedom = n - 1 = 62 - 1 = 71

significance level = 0.08

t = (3.24 - 3.3) ÷ 0.4/√62 = -0.06 ÷ 005 = -1.2

The test is a one-tailed test. The critical value corresponding to 61 degrees of freedom and 0.08 significance level is 1.654

Conclusion:

Reject the null hypothesis because the test statistic -1.2 is in the rejection region of the critical value 1.654. The claim is contained in the alternative hypothesis, so it is supported.

5 0
3 years ago
Does anyone know how to answer this?
max2010maxim [7]
Given that
The length of the rectangle 4cm and the breadth is 3cm
Area of rectangle= length * breadth
Area= 4*3
= 12cm^2
Hope it helped
3 0
2 years ago
Read 2 more answers
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