MATHEMATICS HIGH SCHOOL

A colored chip is yellow on one side and red on the other. The chip was flipped 50 times and landed red side facing up 20 times. What is the relative frequency of the chip landing with the red side facing up?20%
30%
40%
60%

Answers

Answer 1
Answer: Number of times red side faced up = 20

Total number of times thrown = 50

Frequency of red side = No of red side / Total    * 100%

                                      =  (20 / 50) * 100%

                                     = 0.4 * 100%

                                     = 40%

Hope this explains it.
Answer 2
Answer: 20/50 is equal to 40/100 so the answer is 40%

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In the statement "height is a function of weight," which variable is the input and which is the output?

Answers

Answer:

weight variable is the input and height variable is the output

Step-by-step explanation:

As per the statement:

\text{

here, height is the dependent value and  weight is the independent value.

or

we can say that weight is the input variable and height is the corresponding output value.

Therefore, weight variable is the input and height variable is the output
input is weight and output is height

If sin ⁡x=−1/2, and 270°* If 180°<θ<270°, and sin⁡θ=−3/4, what is the value of sin(−θ)?

Answers

Answer:

For each of the three basic trig functions, (sin, cos, tan) there are three more which act as their reciprocals. (csc, sec, and cot respectively)


Reciprocals, of course, are flipped fractions. If you have some number x, the reciprocal can be expressed as .


An important property of reciprocals is that if you mutliply them together they will cancel out--take  for example.


Since secӨ is literally defined as the reciprocal of cosӨ, it is evident that



Read more on Brainly.com - brainly.com/question/505406#readmore

Step-by-step explanation:

Find the value of y when x equals 1, 9x+7y=-12

Answers

9(1)+7y=-12
9+7y=-12
7y=-12-9
7y=-21
y=-3

What is the first step in writing f(x) = 3x2 + 6x – 8 in vertex form?A. Factor out 3 from each term.


B. Form a perfect square trinomial by keeping the value of the function equivalent.


C. Write the trinomial as a binomial squared.


D. Factor out 3 from the first two terms.


Explain your answer?


No spam answers, if you spam your answers it's going mark your answer report.


If your answer is wrong that's going mark your answer report.


Thank you!



-Charlie

Answers

Answer:

  D. Factor out 3 from the first two terms.

Step-by-step explanation:

Vertex form is ...

  y = a(x -h)² +k

where (h, k) is the vertex and "a" is the vertical scale factor.

This equation expands to give ...

  y = ax² -2ahx + ah² +k

Factoring "a" from the terms involving x makes it easy to identify h and so finish putting the equation into vertex form. In this equation, that means the most appropriate first step is ...

  factor out 3 from the first two terms

Answer:

D. Factor out 3 from the first two terms.

Step-by-step explanation:

According to the VertexFormula[y = A(X - H)² + K], -H gives you the OPPOSITE terms of what they really are, but in this case, this would not qualify, since the question is asking something totally unique. So, since 3 is your "A", you factor that out, and since 6 is a multiple of 3, it is easy to work with. Anyway, you get this:

y = 3(x + 1)² - 11

I hope this helps you out alot, and as always, I am joyous to assist anyone at any time.

A car traveling at 60 miles per hour. What is this speed in feet per second?

Answers

The answer is 88 ft/s

The length of a swimming pool is 8m longer than its width and the area is 105m2

Answers

width : w \n length : \ l = w + 8 \n A = 105 \ m^2 \n \nA= w \cdot l \n \nw(w+l)=105 \n \nw^2+w = 105 \n \nw^2+w-105 =0 \n \n(w+15)(w-7)=0 \n \nw+15 =0 \ \ or \ \ w-7 = 0 \n \nw = -15 \ \ or \ \ w=7 \n \n width \ cant \ be \ negative, \ so \n \n w = 7 \ and \ l = w+8 = 7 +8 =15 \n \nchek : \n \n A=w\cdot l \n \nA=7\cdot 15=105 \ m^2
l\ \rightarrow\ the\ length\nw\ \rightarrow\ the\ width \n\nl=w+8\ \ \ and\ \ \ l\cdot w=105\ \ \ and\ \ \ l>0,\ w>0\n\n(w+8)\cdot w=105\ \ \ \Rightarrow\ \ \ w^2+8w=105\n\n w^2+2\cdot4w+4^2=105+4^2\n\n (w+4)^2=105+16\ \ \ \Rightarrow\ \ \ (w+4)^2=121\n\nw+4=11\ \ \ or\ \ \ w+4=-11\n\nw=7\ \ \ \ \ \ \ \ \ \ or\ \ \ w=-15<0\n\nw=7\ \ \ \Rightarrow\ \ \ l=7+8=15\n\nAns.\ the\ length\ is\ 15\ m\ \ and\ \ the\ width\ is\ 7\ m.
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