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STALIN [3.7K]
3 years ago
6

Kendrick is using the quadratic formula to solve the equation . Which statement best describes Kendrick’s work?

Mathematics
1 answer:
geniusboy [140]3 years ago
6 0

Answer: (–4)2 – 4(1)(0).

Step-by-step explanation:

The expression under the radical is correct as written. The expression under the radical should be –42 – 4(1). The expression under the radical should be –42 – 4(1)(0). The expression under the radical should be (–4)2 – 4(1)(0).

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Determine the values of \theta if sec\;\theta=-\frac{2}{\sqrt{3}}.
Masja [62]

Answer:

See below.

Step-by-step explanation:

So, we have:

\sec(\theta)=-2/\sqrt{3}

Recall that secant is simply the reciprocal of cosine. So we can:

\cos(\theta)=(\sec(\theta))^{-1}=(-2/\sqrt{3})^{-1}\\\cos(\theta)=-\sqrt{3}/2

Now, recall the unit circle. Since cosine is negative, it must be in Quadrants II and/or III. The numerator is the square root of 3. The denominator is 2. The whole thing is negative. Therefore, this means that 150 or 5π/6 is a candidate. Therefore, due to reference angles, 180+30=210 or 7π/6 is also a candidate.

Therefore, the possible values for theta is

5π/6 +2nπ

and

7π/6 + 2nπ

6 0
3 years ago
It is now twenty-five to four. What time will it be in one hour and forty-six minutes?
Dafna1 [17]

Answer:

5:21

Step-by-step explanation:

We know that currently (in the problem) it is 25 min before 4, or 3:35. When we add an hour to that (first part of the problem), we get 4:35. The way l like to continue from here is to take the second part (the 46 min) and just use part of it to round the hour off, and then add the other part to it.

From 4:35 to 5, we have 25 min

4.35 + 25 = 5

We subtract those 25 min from the 46 min, since we used them to round the hour off.

46 - 25 = 21

We have 21 min left, and now that the hour is rounded off, it's way easier to add minutes to it.

5 + .21 = 5.21.

So an hour and 46 min from 3:35 it will be 5:21. I hope this helps :)    

7 0
3 years ago
Read 2 more answers
Find the 7th term of the geometric sequence whose common ratio is 2/3 and whose first term is 6.
maksim [4K]
Hope it helpssss…….hehe

7 0
2 years ago
A culture of 1.08×1015 bacteria is in petri dish A. A culture of 2.7×1011 bacteria is in petri dish B.
dalvyx [7]
<span> 1.08×10^15
------------------ = 0.4 x 10^4 = 4000
</span><span> 2.7×10^11

answer
4000 times greater</span>
3 0
3 years ago
Read 2 more answers
Nvm <br>I don't need help
Snowcat [4.5K]

Answer:

ok

Step-by-step explanation:

5 0
1 year ago
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