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3 years ago

W Write an equation of A-line that passes through the point (2,0) and is perpendicular to the line y= -1/2x + 3

1 answer:

8 0

Perpendicular is opposite sign and reciprocal
-1/2 = 2, the slope is 2
Y = 2x + b, plug in point
0 = 4 + b, b = -4
Equation: y = 2x - 4

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What is the difference between the temperatures at 10 a.m. and 3:30 p.m.? Indicate whether the change is an increase or decrease

dsp73

Answer:

Change in temperature = - 3.3 F

The temperature has decreased

Step-by-step explanation:

The complete question is attached below .

As given in the attached image

Temperature at 10 A.M $= 1.2$ degree Fahrenheit

Temperature at 3:30 P.M. $= -2.1$ degree Fahrenheit

Change in temperature

= Temperature at 3:30 p.m - Temperature at 10 a.m

= $- 2.1 - 1.2$

$= - 3.3$ F

The temperature has decreased

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3 years ago

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Natali5045456 [20]

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3 years ago

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27. Is the following relation a function?

Sunny_sXe [5.5K]

Answer:

Step-by-step explanation:

27 No

28.A

you are to read it maximum and minimum point on the vertical axis

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3 years ago

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The Hudson Bay tides vary between 3 feet and 9 feet. The tide is at its lowest point when time (t) is 0 and completes a full cyc

BaLLatris [955]

Answer:

$y(t)= 6-3cos(\dfrac{2\pi}{14}t )$

Step-by-step explanation:

The function that could model this periodic phenomenon will be of the form

$y(t) = y_0+Acos(wt)$

The tide varies between 3ft and 9ft, which means its amplitude $A$ is

$A =\dfrac{(9-3)ft}{2} \\\\\boxed{A = 3ft}$

and its midline $y_0$ is

$y_o=3+3 \\\\\boxed{y_o= 6ft}$ .

Furthermore, since at $t=0$ the tide is at its lowest ( 3 feet ), we know that the trigonometric function we must use is $-cos(\omega t)$ .

The period of the full cycle is 14 hours, which means

$\omega t =2\pi$

$\omega (t+14)= 4\pi$

giving us

$\boxed{\omega = \dfrac{2\pi}{14}.}$

With all of the values of the variables in place, the function modeling the situation now becomes

$\boxed{y(t)= 6-3cos(\dfrac{2\pi}{14}t ).}$

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3 years ago

Deon earns $91 washing 7 dogs. At this rate, how many dogs did Deon wash to earn $117?

mamaluj [8]

$91/ 7 = $13 per dog
$117/$13 = 9 dogs
He washed 9 dogs

4 0

3 years ago