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3 years ago

Find f(x) of |2x-2| if x is -1.

Mathematics

2 answers:

umka21 [38]3 years ago

5 0

Answer:

Step-by-step explanation:

the photo explains all

Pavlova-9 [17]3 years ago

4 0

Answer:

Step-by-step explanation:

x = -1

|2x-2| = |2(-1)-2| = |-2-2| = |-4| = 4

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A man is standing at a radar base and observes an unidentified plane at an altitude 6000m flying towards the radar base at an an

liubo4ka [24]

Answer:

The speed in of the plane is 115.47 m/sec

Step-by-step explanation:

Given:

Height at which the plane is flying = 6000 m

Angle of elevation at the radar base = 30 Degrees

Angle of elevation at the radar base after one minute = 60 Degrees

To Find:

The Speed of the plane in meter per second = ?

Solution:

Let us use the tangent of the angle to find the distance (d) to a point directly below plane:

when the angle is 30 degrees

$tan(30) = \frac{6000}{d1}$

$d1 = \frac{6000}{tan(30)}$

$d1 = \frac{6000}{0.577}$

d1 = 10392.3 meters

when the angle is 60 degrees

$tan(60) = \frac{6000}{d2}$

$d2 = \frac{6000}{tan(60)}$

$d2 = \frac{6000}{1.732}\\$

d2 = 3464.1 meters

distance travelled by aircraft in 1 min is

=>d1 - d2

=>0392.3 - 3464.1

= 6928.2 m/min

Now converting to m/sec

=> $\frac{6928.2}{60}$

=>115.47 m/sec

4 0

3 years ago

Find the constant of variation (k) for the inverse variation. Then write an equation for the inverse situation.

notka56 [123]

y = k/x

5 =k/7.5

k = 7.5/*5= 37.5

answer is D

7 0

3 years ago

Read 2 more answers

−2x+2y−3z=

ziro4ka [17]

Answer:

Step-by-step explanation:

5 0

3 years ago

Jack is 13 years younger than his older brother, Tyler. Their Dad is twice Tyler's age. The sum of their ages now is 91. Find Ja

grin007 [14]

Answer:

13 years old

Step-by-step explanation:

So to solve this we use a system of equations. Let's use "j" to represent Jack, "t" to represent Tyler, and "d" to represent the dad. Set the system up and it will look something like this:

j = t - 13 (Jack is 13 years younger than Tyler)

d = 2t (Dad is twice Tyler's age)

d + j + t = 91 (The sum of the ages is 91)

And then solve, I solved by isolating the "j" variable on the last equation, giving us j = 91 - t - d, then plugged that into the first equation, giving us 91 - t - d = t - 13, and got d = 104 - 2t. Then I plug that into d = 2t, giving us 104 - 2t = 2t, and solve for t. T is 26, meaning Tyler is 26 years old, and then I just subtract 13 from that, giving us 13 years old.

And finally, I obviously checked my answer, because now we know dad is 52, and I got 91.

5 0

3 years ago

How do I find (10x + 2) °

Deffense [45]

Answer:

multiply 10 with the value given for x and add 2 to the result

5 0

3 years ago

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Find f(x) of |2x-2| if x is -1.​

Find f(x) of |2x-2| if x is -1.