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svlad2 [7]
3 years ago
8

The track at the middle school is 200 meters. Rachel runs 1 ½ laps in 90 seconds. Find Rachel’s speed in meters/second

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
7 0

Answer:

3.33 meters per second

Step-by-step explanation:

1 1/2 laps = 200+100 = 300

use formula: distance = rate x time

t = time (in meter per second)

300 = 90t

t = 300/90 which reduces to 3.33/1

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Which translation maps the graph of the function f(x) = x2 onto the function g(x) = x2 + 2x + 6?
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Answer:

left 1 unit, up 5 units

Step-by-step explanation:

First factor

g(x)=x^2+2x+6 = (x+1)^2+5

The standard transformation formula is

g(x) = a*f(bx-h) + k

which means

a=1, b=1,h=-1, k=5

or

h=-1 means translate left one unit

k=5 means translate up 5 units.  

Choose the first option: left 1 unit, up 5 units

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If a, b, and care digits for which the following holds, then a +b+c=.
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3 years ago
11. Use the following information for problems a-b. The table shows the results of a school lunch survey. In the
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Using it's concept, the probabilities are given as follows:

a) C. 7/20.

b) D. 15/22.

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

For item a, we have that there are 60 students with no curfew, and of those, 21 have no chores, hence the probability is given by:

p = 21/60 = 7/20

Which means that option C is correct.

For item b, we have that there are 66 students with no shores, and of those, 45 have a curfew, hence the probability is given by:

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More can be learned about probabilities at brainly.com/question/14398287

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