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sashaice [31]
3 years ago
6

Milla and Luka are 3 kilometers apart and walking toward

Mathematics
1 answer:
Savatey [412]3 years ago
7 0

Answer:5t-4t=3

Step-by-step explanation:

Millas speed=5km/hr

d=s x t

d=5 x t

d=5t

Lukas speed=4km/hr

d=s x t

d=4 x t

d=4t

5t-4t=3

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How do you solve this
marusya05 [52]
Hope this helps! Good luck!

3 0
3 years ago
A car's position is given by s(t) = {3 – 5t? + 7t hundreds of meters with t in minutes.
Nadya [2.5K]

Answer:

A) (1 s, 2.3 s)

B) (-4 m/s², 3.8 m/s²)

Step-by-step explanation:

The car's position which is the distance is given by the equation;

s(t) = t³ - 5t² + 7t

A) Velocity is the first derivative of the distance. Thus;

v(t) = ds/dt = 3t² - 10t + 7

At v = 0, we have;

3t² - 10t + 7 = 0

Using quadratic formula, we have;

t = 1 and t = 2.3

Thus, time at velocity of 0 is t = (1 s, 2.3 s)

B) acceleration is the derivative of the velocity. Thus;

a(t) = dV/dt = 6t - 10

At velocity of 0, we got t = 1 and t = 2.3

Thus;

a(1) = 6(1) - 10 = -4 m/s²

a(2.3) = 6(2.3) - 10 = 3.8 m/s

Thus, a(t) at v = 0 gives; (-4 m/s², 3.8 m/s²)

8 0
3 years ago
1. Solve x/5-3&lt;5<br><br> A. x&lt;2/5<br> B. x&lt;10<br> C. x&lt;40
blsea [12.9K]

x/5-3<5

add 3 to each side

x/5 < 8

multiply each side by 5

x<40

Choice C


5 0
3 years ago
Read 2 more answers
Random groups of 25 graduates of a school of nursing were asked the starting salary for their first nursing job after graduation
laila [671]

Answer:the answers is 75.000

Step-by-step explanation:

6 0
3 years ago
What is the growth or decay and the percentage rate of Y=23(0.292)^x
torisob [31]

Answer:

So the decay percentage rate is of 70.8%

Step-by-step explanation:

An exponentil function has the following format:

y = ca^{x}

In which c is a constant.

If a>1, we have that a = 1 + r and r is the growth rate.

If a<1, we have that a = 1 - r and r is the decay rate.

In this problem:

a = 0.292

A is lesser than 1, so r is the decay rate.

1 - r = 0.292

r = 1 - 0.292

r = 0.708

So the decay percentage rate is of 70.8%

5 0
3 years ago
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