<span>-4x^2+3x+1=0
D = b</span>² - 4ac = 3² - 4 * (-4) * 1 = 9 + 16 = 25
D>0 ⇒ <span>this equation has two solutions.</span>
Answer:
3 dollars and 60 cents
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
We can write this as Sinx by "flipping" the
.
So we will have: 
From basic trigonometry, we know the value of
of sine is of the angle 
<em>But when is sine negative? </em>Either in 3rd or 4th quadrant. But the answer has to be between 0 and
, <em>so we disregard 4th quadrant.</em>
<em />
<em>To get the angle in 3rd quadrant, we add π to the acute angle of the first quadrant (which is π/4 in our case).</em><u><em> Thus we have:</em></u>

A is the right answer.
In this scenario, the parameter is the sample proportion, which is of 0.7.
<h3>What is the parameter?</h3>
- When a hypothesis is tested, the parameter is the information obtained from the sample, mean or proportion.
- In this case, it is the <em>sample proportion</em>, which is the <u>number of desired outcomes divided by the number of total outcomes</u>.
She goes to the correct object in 70 of those 100 trials, hence:

The parameter is the sample proportion, which is of 0.7.
You can learn more about sample proportion at brainly.com/question/25868626
Answer:
8.33
Step-by-step explanation: