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4 years ago

Help me please ASAP need to get this done.

Mathematics

1 answer:

Thepotemich [5.8K]4 years ago

4 0

A) 39 mph
B) 15 mph and 28 mph
C) Median
D) Median
E) It shows the median speed.
Not sure if this is right but it's what I'm thinking... :)

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2+2 help please I will give brainliest

liberstina [14]

The answer is 4 isn’t it?

3 0

3 years ago

2.-3(x-2) OS<br> (1 Point)<br> Enter your answer

Fantom [35]

Answer:

-3x+6

Step-by-step explanation:

Again, you multiply -3 times x and you get -3x, then you multiply -3 times -6 and since you are multiplying two negative numbers the result becomes positive so you get +6. Result = -3x+6

6 0

3 years ago

Compare 4.6, 2.8..., square root 17, 3.9..., square root 8

Basile [38]

1. Square root 17= 289, Square root 8= 64.
$289 = 289.00 \: \: 64 = 64.00$
$4.6 > 2.8$
$289.00 > 64.00$
$289.00 > 4.6$
$4.6 > 3.9$
$2.8 < 3.9$
Least to greatest:
2.8, 3.9, 4.6, 64.00, 289.00

7 0

3 years ago

The ratio of losses to wins for Kyle's team is 3 to 2. If the team had played the same number of games, but had won twice as man

Fiesta28 [93]

Answer: The new ratio will be 1/4

Explanation: The initial ratio of losses to wins is 3 to 2. If we sum the numer of losses and wins 3 + 2 = 5 games, that means they loss 3 out of 5 games , and they win 2 out of 5 games.

So if they had won twice as many of the games, that is 2*2=4. And since the number of games is the same ( 5 ), then they would have won 4 games and loss only 1.

So the new ratio of losses to wins will be 1 to 4, or expressed in a fraction: 1/4

4 0

3 years ago

Read 2 more answers

An article regarding interracial dating and marriage recently appeared in the Washington Post. Of the 1,709 randomly selected ad

VMariaS [17]

Answer:

The 95% confidence interval for the percent of all black adults who would welcome a white person into their families is (0.8222, 0.8978).

Step-by-step explanation:

In a sample with a number n of people surveyed with a probability of a success of $\pi$ , and a confidence level of $1-\alpha$ , we have the following confidence interval of proportions.

$\pi \pm z\sqrt{\frac{\pi(1-\pi)}{n}}$

In which

z is the zscore that has a pvalue of $1 - \frac{\alpha}{2}$ .

For this problem, we have that:

323 blacks, 86% of blacks said that they would welcome a white person into their families. This means that $n = 323, p = 0.86$

95% confidence level

So $\alpha = 0.05$ , z is the value of Z that has a pvalue of $1 - \frac{0.05}{2} = 0.975$ , so $Z = 1.96$ .

The lower limit of this interval is:

$\pi - z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.86 - 1.96\sqrt{\frac{0.86*0.14}{323}} = 0.8222$

The upper limit of this interval is:

$\pi + z\sqrt{\frac{\pi(1-\pi)}{n}} = 0.86 + 1.96\sqrt{\frac{0.86*0.14}{323}} = 0.8978$

The 95% confidence interval for the percent of all black adults who would welcome a white person into their families is (0.8222, 0.8978).

5 0

3 years ago