after a party, you have 2/5 of the brownies you made left over. there are 16 left. how many brownies did you make for the party

2 answers:

7 0

You originally prepared 40 brownies. 16 brownies are left, which is 2/5 of the total. Dividing 16 by 2 gives us 2/5 divided by 2/1, resulting in 8. Then, multiplying 8 by 5 results in 40, confirming the total amount of brownies.

tester [12.3K]2 months ago

5 0

Let x represent the total number of brownies prepared for the celebration. We understand that... To find x, we need to solve for it... Thus, the final result is...

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(1 point) Since 1966, 45% of the No. 1 draftpicks in the NBA have been centers. identify the population A. all No.1 draftpick ce

Zina [12379]

Response:

1 B

2 A

3 B

Detailed explanation:

The population refers to the entire sample from which part of the event is being analyzed. Essentially, in a set, the population includes everything collectively. From the provided statement, our goal is to identify the population. The population is B.

All NBA players since 1966. This selection is because it is from this set that the draft picks were chosen, ultimately narrowed down to 45% being center backs.

The specified attribute is A.

Being a No. 1 draft pick, as it's the central focus of the statement itself

B sample proportion. As mentioned earlier, the population consists of all NBA players since 1966, so a population proportion would contain a statement like this.

45% of all NBA players since 1966...

Consequently, it's a sample proportion since it pertains to the draft pick, as opposed to the NBA players

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2 months ago

. A hawk drops its prey from a certain height above the ground.The height, h metres, of the prey can be modelled by h = 4 + 11 t

Leona [12618]

Answer:

The hawk releases the prey from a height of 4 meters.

It takes the prey 4 seconds to reach the ground.

Step-by-step explanation:

The equation gives insights about the height of the prey at any time starting from the moment it is dropped. Thus, to determine the drop height, we evaluate the expression at time equals zero (the drop moment). This answers the first question:

$h=4+11t-3t^2\\h=4+11\,(0)-3\,(0)^2\\h=4\, \,meters$

To ascertain when the prey touches the ground, we set "h" to zero (height of zero) and solve for "t".

This results in a quadratic equation that can be solved via the quadratic formula:

$h=4+11t-3t^2\\0=4+11t-3t^2\\-3t^2+11t+4=0\\t=\frac{-11+-\sqrt{11^2-4\,(-3)(4)} }{2\,(-3)} \\t=\frac{-11+-\sqrt{121+48} }{-6} \\t=\frac{-11+-13 }{-6} \\t= 4\,\,and \,\, t=-\frac{1}{3}$

Since negative time values are impractical, we select the positive 4 (4 seconds)

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1 month ago

John averages 58 words per minute on a typing test with a standard deviation of 11 words per minute. Suppose John's words per mi

Zina [12379]

Answer:

When x = 72, the z score is:

$z = \frac{72-58}{11}= 1.273$

The average is 58

This z-score indicates that x= 72 is 1.273 standard deviations above the mean.

Step-by-step explanation:

Let’s consider the following details for this question: John's typing speed on a test is assumed to follow a normal distribution. Let X denote the number of words he can type in a minute. Hence, X ~ N(58, 11). It’s important to round the result to three decimal points if needed.

Provide your response below for words per minute on a typing test conducted on Sunday. The z score when x = 72 is

In this scenario, we acknowledge that the variable under consideration is represented by a normal distribution:

$X \sim N (\mu= 58, \sigma=11)$