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MArishka [77]
3 years ago
14

Round 23.782 to the nearest tenth

Mathematics
2 answers:
LekaFEV [45]3 years ago
4 0

Answer:

23.800

Step-by-step explanation:

trapecia [35]3 years ago
4 0
The answer would be 23.8
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100 points!!! Pre calculus. I need helpppppppppp
Fantom [35]

Answer:

We have function,

y = 3 - 6 \sin {}^{} (2x +  \frac{\pi}{2} )

Standard Form of Sinusoid is

y =  - 6 \sin(2x +  \frac{\pi}{2} )  + 3

Which corresponds to

y = a \sin(b(x + c))  + d

where a is the amplitude

2pi/b is the period

c is phase shift

d is vertical shift or midline.

In the equation equation, we must factor out 2 so we get

y =  - 6(2(x +  \frac{\pi}{4} )) + 3

Also remeber a and b is always positive

So now let answer the questions.

a. The period is

\frac{2\pi}{ |b| }

\frac{2\pi}{ |2| }  = \pi

So the period is pi radians.

b. Amplitude is

| - 6|  = 6

Amplitude is 6.

c. Domain of a sinusoid is all reals. Here that stays the same. Range of a sinusoid is [-a+c, a-c]. Put the least number first, and the greatest next.

So using that<em> rule, our range is [6+3, -6+3]= [9,-3] So our range</em> is [-3,9].

D. Plug in 0 for x.

3 - 6 \sin((2(0) +  \frac{\pi}{2} )

3 - 6 \sin( \frac{\pi}{2} )

3 - 6(1)

3 - 6

=  - 3

So the y intercept is (0,-3)

E. To find phase shift, set x-c=0 to solve for phase shift.

x +  \frac{\pi}{4}  = 0

x =  -  \frac{\pi}{4}

Negative means to the left, so the phase shift is pi/4 units to the left.

f. Period is PI, so use interval [0,2pi].

Look at the graph above,

6 0
3 years ago
How many quarters are there in<br> 7 3/4
Lana71 [14]

Answer:

31 quarters

Step-by-step explanation:

6 0
3 years ago
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Solve it please<br><br> 72:8
amm1812
9:1 because you divide both sides by 8. Hope this helps :)
3 0
3 years ago
G
kvv77 [185]

Answer:

Girls in Mr. Chang's class: 28 - 21 ; # girl students = # total students - # boy students ; 7 girl students.

Boys in Mr. Chang's class: 28 - 7 ; # boy students = # total students - girl students ; 21 boy students.

8 0
3 years ago
Each of the numbers 1 through 7 is written on a small piece of paper and placed in a box. What is the probability of picking a p
gregori [183]

Answer:

Either C or B I’m not quite sure which one. I’m sorry

Step-by-step explanation:

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3 years ago
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