How do I solve this problem?

Mathematics

2 answers:

nexus9112 [7]3 years ago

8 0

You need to find x and y intercept
y = 1.25x - 2.5

x intercept y = 0 x =2.5/1.25 = 2
y intercept x = 0 y = -2.5

so your coordinates (0,-2.5)(2,0)

answer is A. (first graph)

Vaselesa [24]3 years ago

6 0

You use a scientific or graphing calculator to plug in the equations then plot each point and connection the dots.

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And rounded up we have that n=1068

Step-by-step explanation:

We have the following info given:

$Confidence= 0.95$ the confidence level desired

$ME =0.03$ represent the margin of error desired

The margin of error for the proportion interval is given by this formula:

$ME=z_{\alpha/2}\sqrt{\frac{\hat p (1-\hat p)}{n}}$ (a)

The confidence level is 95% or 0.95, the significance is $\alpha=0.05$ and the critical value for this case using the normal standard distribution would be $z_{\alpha/2}=1.96$