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skad [1K]
3 years ago
6

Note the graph of an athletes performance after finishing a triathlon. The x-axis measures time in hours, and the y axis measure

s distance in kilometers. First she swam, then biked, and then she finished the race with a run. The data states she ran four times as fast as she swam and she biked twice as fast and she ran. Based on the graph, chose the statement below that is false.
A) the steeper the segment, the faster the athlete is traveling along the course

B) the athlete finished the course in under eight hours

C) the athlete spent equal amounts of time biking and running

D) the athlete spent twice as much time biking compared to swimming

Mathematics
2 answers:
emmasim [6.3K]3 years ago
6 0
Eh wondering too :/
sorry don't get this. Wish i did
vredina [299]3 years ago
5 0

Answer:

the answer is c

Step-by-step explanation:


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ASAP Can someone help me with this please. I filled most of the angles. I just need help finding x
valentinak56 [21]

Answer:

20

Step-by-step explanation:

Cause im smart and you should trust me. duh

3 0
4 years ago
Read 2 more answers
How many subsets of {1, 2, 3, 4, 6, 8, 10, 15} are there for which the sum of the elements is 15?
stepladder [879]

Answer:

512

Step-by-step explanation:

Suppose we ask how many subsets of {1,2,3,4,5} add up to a number ≥8. The crucial idea is that we partition the set into two parts; these two parts are called complements of each other. Obviously, the sum of the two parts must add up to 15. Exactly one of those parts is therefore ≥8. There must be at least one such part, because of the pigeonhole principle (specifically, two 7's are sufficient only to add up to 14). And if one part has sum ≥8, the other part—its complement—must have sum ≤15−8=7

.

For instance, if I divide the set into parts {1,2,4}

and {3,5}, the first part adds up to 7, and its complement adds up to 8

.

Once one makes that observation, the rest of the proof is straightforward. There are 25=32

different subsets of this set (including itself and the empty set). For each one, either its sum, or its complement's sum (but not both), must be ≥8. Since exactly half of the subsets have sum ≥8, the number of such subsets is 32/2, or 16.

8 0
4 years ago
Helpppp Plsssss Asap!! Show your work!! <br><br>Thanks!! ​
Vera_Pavlovna [14]

Answer:

the answer is C

used graphing calculator

Hope This Helped!     Have A Nice Day!!

8 0
3 years ago
Read 2 more answers
Which equation correctly uses the law of cosines to
seraphim [82]

Answer:

fourth option

Step-by-step explanation:

Using the Law of Cosines in Δ STU to find s

s² = t² + u² - 2us cosS

where t = 9, u = 10 and S = 100° , thus

s² = 9² + 10² - 2(9)(10)cos100°

8 0
3 years ago
Read 2 more answers
The number of wins in a season for 32 randomly selected professional football teams arelisted below. Construct a 90% confidence
Anvisha [2.4K]

Answer:

A)CI 90 % = [ 7,2103 ;  8,7297]

B) s = √ ∑(xi - xp)²/n-1

c) z is the score for the given significance level in this case is 1,64

Step-by-step explanation:

For a confidence Interval of 90%, the significance level is α = 10 %

α = 0,1     α/2 = 0,05  and from z-table we find  z(c) for 0,05   z(c) = 1,64

CI 90 % = [ x  ±  z(c) * s/√n ]

CI 90 % = [ 7,97 ±  1,64 * 2.62/√32]

CI 90 % = [ 7,97 ± 0,7597]

CI 90 % = [ 7,2103 ;  8,7297]

B) To calculate the standard deviation of the sample the equation is:

s = √ ∑(xi - xp)²/n-1

xi - xp  is the difference between each one of the elements of the sample

xp is the mean or average of the elements of the sample and n is the sample size

7 0
3 years ago
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