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3 years ago

What is the best way to gather information for each of the scenarios?

Mathematics

2 answers:

charle [14.2K]3 years ago

7 0

Lisboa is wrong, I just took the test. The correct answer is

Observational study, survey, experiment, observational study

edit: nvm I'm thinking of if the first question was "who the fastest runner is" :/

topjm [15]3 years ago

4 0

(a) The team captain wants to know what his teammates eats before a match

Team captain know by taking a survey of teammates

(b) The team captain wants to know who can score most goals against the best player

This can be known by observation of games. so its observational study

This can be known by experiment

(d) The team captain wants to know what other sports teammates play

This can be known by observation of games. so its observational study

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What is the constant of proportionality shown in the graph? a 0 b. 1/2 c. 1/4 d. 4

Grace [21]

Answer:

The answer is B

1/2=B

The answer is B Hope that Helped!

7 0

3 years ago

-7 2/3+(-5 1/2) +8 3/4=

vodka [1.7K]

Exact Form : -53/12
Decimal Form : -4.416
Mixed numbers : -4 5/12

8 0

2 years ago

Read 2 more answers

If f(x) and its inverse function, f(x), are both plotted on the same coordinate plane, where is their point of intersection?

Tcecarenko [31]

Answer:

(2,2)

Step-by-step explanation:

The graph of a function and that of its inverse should be always symmetric around the line y = x (goes at 45 degrees and crosses the origin of coordinates).

Therefore any intersection of the graphs must lie on the line y = x, which forces the x value of the intersection point to be the same as the y-value.

The only option shown where x and y have the same numerical value is the third listed option : (2,2)

7 0

3 years ago

Which is true 10.59>10.60 10.590=10.59 10.43<10.24 9.0005=9.0050

mart [117]

I think the second i didnt make it on paper but its the one that more convence me

4 0

3 years ago

A mattress store sells only king, queen and twin-size mattresses. Sales records at the store indicate that the number of queen-s

Nitella [24]

Answer:

The probability that the next mattress sold is either king or queen-size is P=0.8.

Step-by-step explanation:

We have 3 types of matress: queen size (Q), king size (K) and twin size (T).

We will treat the probability as the proportion (or relative frequency) of sales of each type of matress.

We know that the number of queen-size mattresses sold is one-fourth the number of king and twin-size mattresses combined. This can be expressed as:

$P_Q=\dfrac{P_K+P_T}{4}\\\\\\4P_Q-P_K-P_T=0$

We also know that three times as many king-size mattresses are sold as twin-size mattresses. We can express that as:

$P_K=3P_T\\\\P_K-3P_T=0$

Finally, we know that the sum of probablities has to be 1, or 100%.

$P_Q+P_K+P_T=1$

We can solve this by sustitution:

$P_K=3P_T\\\\4P_Q=P_K+P_T=3P_T+P_T=4P_T\\\\P_Q=P_T\\\\\\P_Q+P_K+P_T=1\\\\P_T+3P_T+P_T=1\\\\5P_T=1\\\\P_T=0.2\\\\\\P_Q=P_T=0.2\\\\P_K=3P_T=3\cdot0.2=0.6$

Now we know the probabilities of each of the matress types.

The probability that the next matress sold is either king or queen-size is:

$P_K+P_Q=0.6+0.2=0.8$

8 0

3 years ago