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Salsk061 [2.6K]
3 years ago
12

Four times the difference of a number and 16.

Mathematics
1 answer:
allsm [11]3 years ago
4 0

Answer:

4(n-16)

Step-by-step explanation:

4 Four

( ) Times

n number

16 16

- difference

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john goes out to eat at a local restaurant the bill comes to $47.38 john wants to leave a 20% tip how much of a tip should he le
Ghella [55]

Answer:

$56.86

Step-by-step explanation:

4 0
3 years ago
the function v(t)=-9.8t+5 gives the instantaneous velocity of an object thrown upward with an initial velocity of 5 m/sec. at wh
olya-2409 [2.1K]

Answer:

  • <u>0.5 s</u>   (using 1 significan figure since the initial velocity is given with 1 significant figure)

Explanation:

Let's see what each term in the function v (t) = - 9.8t + 5 means:

  • <u>Term: - 9.8 t </u>

        The variable t is the time

        The coffecient - 9.8 (which is negative) means that the velocity is reduced 9.8 m/s each second.

        That means that the motion is uniformly decelerated with acceleration - 9.8 m/s².

  • <u>Term + 5</u>

        The term + 5, means that the object was launched with an upward velocity of 5 m/s.

Hence the equation tells that after the object was launched upward it starts to lose speed and will reach a maximum height when the velocity is equal to zero, from which it starts falling.

So, you can calculate when the object reachs it maximum height and starts falling by making the velocity, v (t), equal to zero and solving for t. This is how you do it:

  • v (t) = 0
  • 0 = - 9.8t  + 5
  • 9.8t  = 5               remember that the units of 9.8 is m/s² and of 5 is m/s

  • t = 5 m/s / 9.8 m/s² = 0.51 s

So, the object starts fallin at 0.51 s. Since, the velocity is reported with 1 significant digit you answer should also show 1 significant digit, which means t = 0.5 s.

3 0
3 years ago
Answer 18 and 19 in full sentences please
Murrr4er [49]
Can I see the rest of the problem of number 18 please
8 0
3 years ago
|v+8| -5=2 Help please
Galina-37 [17]

Answer:

v= -1 (BRAINLIEST PLEASE)

Step-by-step explanation:

|v+8| -5=2

Add 5 to each side

|v+8| -5=2

      +5= +5

Now you have |v+8|= 7

So what plus 8 equals 7?

-1

so now you have |-1+8| which is 7

so v= -1

3 0
3 years ago
write an equation in point-slope form for the line that has a slope of 15 and contains the point (2,−9).
Lorico [155]

Answer:

  y +9 = 15(x -2)

Step-by-step explanation:

The point-slope form of the equation for a line is ...

  y -k = m(x -h) . . . . . . for slope m and point (h, k)

Here, you are given m=15 and (h, k) = (2, -9). Putting these values into the form gives the equation ...

  y +9 = 15(x -2)

6 0
3 years ago
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