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gregori [183]
3 years ago
9

The bookstore has six red school jerseys, five blue school jerseys, and ten green school jerseys to choose from. If a student se

lects one at random find the probability it is red or green
Mathematics
1 answer:
slega [8]3 years ago
3 0
Idkcczsnbzznnhdmsbdhsmmeyfhssfmgbhsngmfbd
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Explain why 3x2 can be said to be in both standard form and factored form.
topjm [15]

I beleve that you can't. if it was 3x2=___ then you could have put

standered form

3x2=____

factored form

____=3x2

7 0
3 years ago
Explain to them the process for combining integers. Helps pls 15 point
professor190 [17]
Case 1: Steps when Adding Integers with the Same Sign

Step 1: Take the absolute value of each number.

Step 2: Add the absolute values of the numbers.

Step 3: Keep the same sign.

Case 2: Steps when Adding Integers with Different Signs

Step 1: Take the absolute value of each number.

Step 2: Subtract the number with a smaller absolute value from the number with bigger or larger absolute value.

Step 3: Copy the sign of the number with the bigger or larger absolute value.

8 0
4 years ago
In New York City at the spring equinox there are 12 hours 8 minutes of daylight. The longest and the shortes days of the year va
gayaneshka [121]

Question:

In New York City at the spring equinox there are 12 hours 8 minutes of daylight. The  longest and the shortest days of the year vary by 2 hours 53 minutes from the equinox.  In this year, the equinox falls on March 21. In this task, you'll use a trigonometric function  to model the hours of daylight hours on certain days of the year in New York City.

- Find amplitude and the period of the function

- Create a trigonometric function that describes the hours of sunlight for each day of the year

- Then use the function you built to find how fewer daylight hours February 10 will have then March 21

Answer:

(a)

A = 2.883  --- Amplitude

T = 365 ---- Period

(b) Trigonometry function

f(x) = 12.133 + 2.883sin(\frac{2\pi}{365}[x - 80])

(c) Hours= 1.794

Step-by-step explanation:

Given

Average\ Sunlight = 12hr\ 8 min

Variance = 2hr\ 53min

Solving (a): Amplitude (P) and Period (T)

The amplitude is the amount of time the longest and the shortest day vary.

So

A = 2\ hr\ 53\ min

Convert to hours

A = 2\ + \frac{53}{60}

A = 2+0.883

A = 2.883

The period (T) is the duration i.e 1 year

T = 1\ year

Assume no leap year

T = 365

Solving (b): Trigonometry function

The function follows a sinusoidal pattern and the general form is:

f(x) = \mu+ Asin(\frac{2\pi}{T}(x -n))

Where

\mu = Average\ Value

\mu = 12\ hr 8\ min

Convert to hours

\mu = 12 + \frac{8}{60}

\mu = 12 + 0.133

\mu = 12.133

A = 2.883  --- Amplitude

T = 365 ---- Period

n = Equinox

n = March\ 21

March\ 21st = 80th\ day

So:

n= 80

The function becomes:

f(x) = \mu+ Asin(\frac{2\pi}{T}(x -n))

f(x) = 12.133 + 2.883sin(\frac{2\pi}{365}[x - 80])

Solving (c): Fewer daylight hours will Feb. 10 have.

Feb\ 10 = 41st\ day

So:

f(x) = 12.133 + 2.883sin(\frac{2\pi}{365}[x - 80])

f(41) = 12.133 + 2.883sin(\frac{2\pi}{365}[41 - 80])

f(41) = 12.133 + 2.883sin(\frac{2\pi}{365}[-39])

2\pi = 360^\circ

So:

f(41) = 12.133 + 2.883sin(\frac{360}{365}[-39])

f(41) = 12.133 + 2.883sin(-38.466)

f(41) = 12.133 - 2.883*0.6221

f(41) = 10.339

The fewer daylight hours is the calculated as:

Hours= Average - f(41)

Hours= \mu - f(41)

Hours= 12.133 - 10.339

Hours= 1.794

4 0
3 years ago
Is 4.44 equal ti 4.044
Licemer1 [7]
No 4.44 inot equal to 4.044
8 0
3 years ago
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Which of the following points must the graph of the linear parent function cross?
Svetllana [295]
It must pass through (0,0).
3 0
4 years ago
Read 2 more answers
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