MATHEMATICS HIGH SCHOOL

I really need help on this I have no clue how to do this and my new teacher have a foreign accent so I can’t understand her

Answers

Answer 1

Answer:

Answer:

sinθ = 12/15 -> 4/5

cosθ = 9/15 -> 3/5

tanθ = 12/9 -> 4/3

cscθ = 15/12 -> 5/4

secθ = 15/9 -> 5/3

cotθ = 9/12 -> 3/4

Step-by-step explanation:

The theta is where you would use to identify the numbers for the trig functions. The adjacent side is the one closest to the theta (but not the diagonal line, that is the hypotenuse), and the opposite line is the line next to the adjacent line.

For the first three trig functions, would use the method Soh Cah Toa.

Sin = opp/hypotenus, Cosine = adjacent/hypotenuse, and Tangent = opposite/adjacent. Then, there is cosecant(csc) = hyp/opp, secant = hyp/adj, and cotangent = adj/opp.

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Jean needs to graph the function below y= 7x^2 + 8x - 6 How many time should the graph of this function intersect at the x-axis?A) 3
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Answers

It's a quadratic curve that has a y-intervept below the x axis. Therefore it crosses 2 times

The teachers’ edition of a statistics textbook sells for $150, and students’ edition of the book sell for $50 each. Which function can be used to find the average cost per book if two teachers’ editions and x students’ editions are purchased? a) f(x)= 150+50x over 1+x
b) f(x)= 150+50x over 2+x
c) f(x)= 300+50x over 1+x
d) f(x)= 300+50x over 2+x

Answers

Answer: d) f(x)= 300+50x over 2+x

Step-by-step explanation:

Since, the money earned by a teacher in selling a book = $ 150

⇒ The money earned by 2 teacher = $ 300

Now, the money earned by a student in selling the book = $ 50

⇒ The money earned by x students = 50x

Thus, the total collection by 2 teacher and x students = 300 + 50x

And, the total persons = 2 teachers + x students = 2 + x

$\text{ The average collection}=\frac{\text{ Total collection}}{\text{Total persons}}$

$=(300+50x)/(2+x)$

⇒ Option d) is correct.

Average =
Sum of all / total number of things

The sum of that would be 300 + 50x
The total number of things would be 2+x

Therefore it is
(300+50x) /2+x

the total cost for 8 bracelets; including shipping was $54. the shipping charge was $6. Define your variable and write a. equation that models the cost of each bracelet.

Answers

$54-6=$48
48÷8= 6
$6 per braclelet

If it takes the Ramirez family 3 days to travel 1,560 miles, how many days will it take them to travel 3,640 miles?

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It would take the Ramirez family seven days to travel 3,640 miles you figure this out by dividing 1,560 by three and then dividing 3,640 by the answer and there is your answer which is 7

7 because they traveled 520 miles a day so if 1560+1560=3120+520=3640

A scientist is testing the effectiveness of a new medicine. The medicine is to be tested on two genetically identical lab rats. One rat receives a placebo pill, while the other rat receives the actual medicine. Which of the following methods is being used to investigate the effectiveness of the medicine?

Answers

Answer: on plato its controlled experiment

Step-by-step explanation:

I would instantly rule out Survey and Seperation Study because 1) a survey is impossible in this instance, and 2) a seperation study will do nothing. It's just moving them apart from eachother. So that leaves Controlled Experiment and Observational Study. An observational study is when you have no control over the groups of subjects, nor what they are given. A controlled experiment is when you change only one aspect of what is given to the group. Since the only thing that is happening is the scientist is giving one rat a real pill, it would fall under controlled experiment. Thus, that is your answer.
Hope I helped ^.^

Which of the following is most likely the next step in the series?

Answers

Answer:

Step-by-step explanation:

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