All categories

2 years ago

Lee and Sheby race clockwise around a 400 meter oval

Mathematics

1 answer:

bija089 [108]2 years ago

6 0

Answer:

6,000 meters

Step-by-step explanation:

Length of one lap d = 400 m

Lee's speed = u = 7.2 km/h. Shelby's speed v = 9 km/h

After time t, Shelby will run x meters to cover exactly 3 more laps than Lee.

So x = vt

and

x - 3d = ut

Note t = x/v, then

x - 3d = x*u/v

x (1 - u/v) = 3d

x = 3d/(1 - u/v) = 3*400/(1 - 7.2/9) = 6,000 meters

You might be interested in

In 1997 there were 31 laptop computers at grove high school. starting in 1998 the school bought 20 more laptop computers at the

Ksenya-84 [330]

We have equation:
t=20x+31
x is number of years after 1997.

To calculate number of laptops in 2005:
x=2005-1997
x=8

t=20*8+31
t=160+31
t=191

In year 2005 school had 191 laptops.

7 0

3 years ago

Unit Rate ez pls help

aliya0001 [1]

Answer:

it can print 24 pages in 15 minutes which means it can print 72 pages in an 3/4 of an hour. 96 in 1 hour, and

Step-by-step explanation:

3 0

3 years ago

Which expression is equivalent to 3(m − 3) + 4?

Elanso [62]

Answer:

3m − 5

Step-by-step explanation:

4 0

3 years ago

IF m power n is equal to 32 wher m and n are natural numbers then find the value of n power m

xxTIMURxx [149]

Answer:

$n^m = 5^2$

Step-by-step explanation:

Given

$m^n = 32$

Required

Find $n^m$

$m^n = 32$

Express 32 as an exponent

$m^n = 2^5$

By comparison:

$m = 2$

$n = 5$

So:

$n^m = 5^2$

6 0

3 years ago

Will mark brainliest

Lisa [10]

Answer:

31, 37, 43, 49, 55

for nth number the value is 31+6(n-1)

24th number, 169-31=138 and 138/6=23

6 0

3 years ago

Read 2 more answers