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gregori [183]
3 years ago
5

Two coins are flipped. What is the probability that both coins land heads up? * 1 point

Mathematics
2 answers:
ValentinkaMS [17]3 years ago
7 0

Answer:

1/4 or 25%

Step-by-step explanation:

Each coin has 1/2 chance of landing head up.

1/2 times 1/2 = 1/4

Kryger [21]3 years ago
3 0

Answer:

1/4

Step-by-step explanation:

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If m ABC=3x and m BCD=6x, find x.
Verdich [7]

Answer:

2x

Because 6 ÷ 3 = 2, so the answer is 2x

6 0
3 years ago
The citizens of a certain community were asked to choose their favorite pet. The pie chart below shows the distribution of the c
Arturiano [62]

Incomplete Question:

The content of the pie chart is as follows:

<em>Hamsters  = 9% ; Snakes  = 10% ; Cats  = 23% </em>

<em> Birds  = 21% ;  Dogs  = 26% ;  Fish  = 11%</em>

<em></em>

Answer:

The number of citizens who chose cat or fish is 47,600

Step-by-step explanation:

Given

Number of citizens = 140,000

Required

Determine the number of those that chose fish or cats

First, we need to calculate the percentage of those whose pets are either cats or fish

Percentage = Cat + Fish

Substitute 23% for cat and 11% for fish

Percentage = 23\% + 11\%

Percentage = 34\%

Next, is to multiply the calculated percentage by the number of citizens

Cat\ or\ Fish = Percentage * Number\ of\ Citizens

Cat\ or\ Fish = 34\% * 140000

Cat\ or\ fish = 47600

<em>Hence, the number of citizens who chose cat or fish is 47,600</em>

4 0
3 years ago
5x + (x÷3) = 38.4<br>Which value of x makes the equation true ​
denpristay [2]

5x + X/3 = 38.4

or, 5x* 3 + X = 38.4*3

or,. 15x + X. = 115.2

or,. 16 X. = 115.2

or,. X. = 115.2/16

X = 7.2

4 0
3 years ago
Read 2 more answers
Which set of ordered pairs represents a function?
vovangra [49]
B. is the answer I believe since most are not functions
4 0
3 years ago
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A national organization has been working with utilities throughout the nation to find sites for large wind machines that generat
kozerog [31]

Answer:

"A Type I error in the context of this problem is to conclude that the true mean wind speed at the site is higher than 15 mph when it actually is not higher than 15 mph."

Step-by-step explanation:

A Type I error happens when a true null hypothesis is rejected.

In this case, as the claim that want to be tested is that the average wind speed is significantly higher than 15 mph, the null hypothesis has to state the opposite: the average wind speed is equal or less than 15 mph.

Then, with this null hypothesis, the Type I error implies a rejection of the hypothesis that the average wind speed is equal or less than 15 mph. This is equivalent to say that there is evidence that the average speed is significantly higher than 15 mph.

"A Type I error in the context of this problem is to conclude that the true mean wind speed at the site is higher than 15 mph when it actually is not higher than 15 mph."

8 0
3 years ago
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