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pshichka [43]
4 years ago
11

Describe a situation in your life when you need to know how to find a starting time

Mathematics
1 answer:
taurus [48]4 years ago
3 0
Running laps and timing them

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If a train travels at 80mph for 15 min, what is the distance traveled ?
VMariaS [17]

Answer:

20 miles

Step-by-step explanation:

The formula for distance is

d =rt  where r  is the rate and t is the time

We need to convert the time to hours since the rate is in mph

15 minutes * 1 hour/ 60 minutes = 1/4 hour = .25 hours

d = (80 mph) * .25 hours

d = 20 miles

6 0
3 years ago
Read 2 more answers
Find ab. round to the nearest tenth if necessary
Brrunno [24]

What is the equation?

6 0
3 years ago
Phillip is standing across the classroom from his desk. He walks x steps in a straight line to his right, turns left at a 90° an
Rainbow [258]
For this case, we can model the problem as a triangle with a right angle.
 Where,
 x, y: lengths of the sides of the triangle
 d: hypotenuse of the triangle
 We then have the following relationship:
 d ^ 2 = x ^ 2 + y ^ 2

 Clearing d we have:
 d = \sqrt{ x^2 + y^2}
 Answer:
 
A functions that would best model the situation above is:
 
D square root
6 0
4 years ago
If the magnitude of vector u is ||u||=7.81 and its angle of direction is 129.81°, which graph represents vector -u?
Triss [41]

Answer:

  see attached

Step-by-step explanation:

The vector -u will be in the opposite direction of u. The magnitude is 7.81, but the angle is 129.81° -180° = -50.19°. A graph of it is attached.

_____

The (x, y) components are ...

  7.81(cos(-50.19°), sin(-50.19°)) ≈ (-5.00, -6.00)

4 0
2 years ago
Choose the correct simplification of the expression 16 over n to the negative third power. n to the third power over 16 16 over
jarptica [38.1K]

Answer:

{16n}^{3}

Step-by-step explanation:

We want to simplify:

\frac{16}{ {n}^{ - 3} }

To simplify this, we need to write the negative index as positive.

So we use the property,

\frac{1}{ {a}^{ - n} }  =  {a}^{n}

When we apply this property, we get:

\frac{16}{ {n}^{ - 3} }  = \: 16 \times \frac{1}{ {n}^{ - 3} }  =16 {n}^{3}

Therefore the fourth option is correct.

8 0
3 years ago
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