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Papessa [141]
3 years ago
14

Ben runs around the track at a pace of 1 lap every 80 seconds. Sally runs on the track in the opposite direction. The two meet e

very 30 seconds. How long does it take Sally to run each lap around the track?
Mathematics
1 answer:
disa [49]3 years ago
5 0
48 seconds, Consider what happens between one time that Ben and Sally meet and the next. During this period Ben runs 30 (seconds)/80 (seconds/lap) = 3/8 of a lap. So Sally runs 5/8 lap in the same time. Her speed is therefore 5/8 (laps)/ 30(seconds) which amounts to 1 (lap)/ 48 (seconds).
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Construct a probability distribution for the data.
lianna [129]

Answer:

X : ___ 0 ____ 1 _____ 2 ______ 3

P(X) : _ 6/15 __ 5/15__ 3/15 ____ 1/15

Step-by-step explanation:

From the data, to produce a probability distribution for the data :

X : number of times blood is drawn ;

P(x) : probability that blood is drawn at X times

Hence, the probability distribution table for the data Given goes thus :

X : ___ 0 ____ 1 _____ 2 ______ 3

P(X) : _ 6/15 __ 5/15__ 3/15 ____ 1/15

Probability that blood is drawn 0 times = 6/15

Probability that blood is drawn 1 time = 5/15

Probability that blood is drawn 2 times = 3/15

Probability that blood is drawn 3 times = 1/15

(6/15 + 5/15 + 3/15 + 1/15) = 1

5 0
3 years ago
the utilities bill for the Miller's' house in April was $132. forty two percent of the bill was for gas, and the rest was for el
Lynna [10]
Hey You!

132*42% = 55.44

132 - 55.44 = 76.56

So, the Millers paid $55.44 for gas and $76.56 for electricity.
4 0
3 years ago
Read 2 more answers
2. There are 1500 candies in a candy dish. Each day half of the candy is taken out.
katen-ka-za [31]

Answer:

so easy and obvious dude

Step-by-step explanation:

5 0
3 years ago
70 POINTS PLEASE HELP Stefan said that the y-intercept for the graph of the function f (x)=3 log(x-7) +1 is 1. He also said that
Mumz [18]
(x)=3log(x−7)+1
There is no y intercept
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3 years ago
Which equation is not a linear equation?
Bond [772]

Answer:

2/x + 3/y = 5

Step-by-step explanation:

A linear equation refers to any equation that can be written in the form;

ax+b=0 or y - mx -c = 0

The graph of a linear equation will always be a straight line; Vertical, horizontal or with a given degree of steepness (slope).

All the equations given are linear, except the last equation;

2/x + 3/y = 5. The exponents of the variables x and y is not 1 hence the equation is non-linear. Find the graph attached;

3 0
3 years ago
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