The answer is<em> 3) An equation with infinite solutions.</em>
<h3>
<u>answer</u><u>:</u></h3>
-0.7
<h3>
<em><u>steps</u></em><em><u>:</u></em></h3>
the quadratic formula is
substitute the correct values in
where it says +- you would type this into your calculator with + AND THEN - to get two separate answers.
when you type + you get the answer of: 5.701562119...
when you type - you get the answer of:
-0.7015621187...
when you round to the nearest tenth you get -0.7
<em>hope</em><em> </em><em>this</em><em> </em><em>helps</em><em>!</em><em> </em><em>:</em><em>)</em>
<em>have</em><em> </em><em>a</em><em> </em><em>great</em><em> </em><em>day</em><em> </em><em>~</em><em> </em><em>•</em><em>lipika</em><em>•</em>
Answer: z-test for population mean.
Step-by-step explanation:
Given : purchase of a coin-operated laundry. The current owner claims that over the past 5 years, the average daily revenue was $675 with a standard deviation of $75.
So the null hypothesis and alternative hypothesis will be :-
It means the test will be for population mean.
We assume that this is normally distributed.
We know that we use t-test for sample size less than 30 and z-test for sample size greater than 30 .
Since the sample size is 30, so the test use here is z-test for population mean.
Answer:42.5
Step-by-step explanation:
By the fundamental theorem of calculus,
<em>f(x)</em> = <em>f</em> (0) + ∫₀ˣ <em>f '(t)</em> d<em>t</em>
We're given that the plot of <em>f(x)</em> passes through the point (0, -7), so <em>f</em> (0) = -7, and
<em>f(x)</em> = -7 + ∫₀ˣ (9<em>t</em> ² + 4<em>t</em> - 4) d<em>t</em>
<em>f(x)</em> = -7 + (3<em>t</em> ³ + 2<em>t</em> ² - 4<em>t</em> )|₀ˣ
<em>f(x)</em> = -7 + (3<em>x</em> ³ + 2<em>x</em> ² - 4<em>x</em>)
<em>f(x)</em> = 3<em>x</em> ³ + 2<em>x</em> ² - 4<em>x</em> - 7