Can someone plz plz help me with this question

Sam drove for 2 hours at 45 mph. He has the same distance remaining. How fast should he drive to make his average speed 60 mph?

Goshia [24]

Speed (S) = Distance (D) / time (t)

First stretch

45 = D / 2

D = 45*2

D = 90 mp

How is the same distance:

Second stretch

S = 90 / t

Average speed (AS):

AS = (S1+S2) / 2

60 = [45+(90/t)] / 2

120 = 45+90/t

120-45 = 90/t

75 = 90/t

t = 90/75

t = 1,2 h

________________________

And now:

S = 90 / t

S = 90 / 1,2

S = 75 mph

8 0

3 years ago

What number has the same value as 20 tens

shutvik [7]

200 because 20 times 10 is 200

7 0

3 years ago

Read 2 more answers

Which table represents the graph of a logarithmic function in the form Y-log, when 5 > 1?

Viktor [21]

Answer:

Determine the domain and range of a logarithmic function.

Determine the x-intercept and vertical asymptote of a logarithmic function.

Identify whether a logarithmic function is increasing or decreasing and give the interval.

Identify the features of a logarithmic function that make it an inverse of an exponential function.

Graph horizontal and vertical shifts of logarithmic functions.

Graph stretches and compressions of logarithmic functions.

Graph reflections of logarithmic function

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

7.Find the lengths of the missing sides in the triangle. If your answer is not an integer, leave it in simplest radical form. Th

Fed [463]

Here a right angled triangle given. one angle with measure $45^o$ given. The three sides of the triangle given 4, x, y.

We have to find, the sides which is opposite, adjacent and hypotenuse here.

We know that the side opposite to right angle is always hypotenuse. So, hypotenuyse = y.

The side adjacent to the given angle $45^o$ is x. So, here adjacent = x.

The opposite side is opposite to the given angle. So, opposite = 4.

Now we will use SOHCAHTOA that is $sin(x) =\frac{Opposite}{Hypotenuse} , cos(x) =\frac{Adjacent}{Hypotenuse} , tan(x) =\frac{Opposite}{Adjacent}$ , where x is the angle given.