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3 years ago

Car X travels 144 miles in 3 hours.

Mathematics

1 answer:

coldgirl [10]3 years ago

6 0

Answer:

A. Y = 48x

B. A distance and Tiem graph is a graph that represents the relationship because you can see how far it goes within a certain time and you can find out the speed of the vehicle D

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Step-by-step explanation:

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How do you solve 3X+2y=9,for y

AnnyKZ [126]

Answer and Explanation:

<em>Solving 3x + 2y = 9 for y gives y = -(3/2)x + (9/2). </em>

5 0

3 years ago

On the blueprint of a house, 36 millimeters represents 7 meters. The length of the living room is 27 millimeters on the blueprin

S_A_V [24]

36/27=1.3
7x1.3=9.1
The actual length is 9.1meters

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4 years ago

The perimeter of a square is 36<br>what is the area of the square?

zmey [24]

Answer: 81 units²

Step-by-step explanation: To solve this problem, remember that the formula for the area of a square is 4s.

Therefore, since the perimeter of the given square is 36, we have 36 = 4s and dividing both sides by 4, 9 = s.

Now, remember that the formula for the area of a square is s² and since the length of a side of the given square is 9, we have (9)² or 81.

So the area of a square that has a perimeter of 36 is 81 units².

6 0

3 years ago

A study of 35 golfers showed that their average score on a particular course was 92. The sample standard deviation was 5. We wan

svlad2 [7]

Answer:

$t_{\alpha/2} = t_{0.05/2} = t_{0.025} = 2.0322$

Step-by-step explanation:

We have a sample of size n = 35, $\bar{x} = 92$ and $s = 5$ . As we want to construct a 95% confidence interval to estimate the value of the true population mean $\mu$ , we should use the pivotal quantity given by $T = \frac{\bar{X}-\mu}{S/\sqrt{n}}$ which comes from the t distribution with n - 1 = 35 - 1 = 34 degrees of freedom. Besides we should use the t-value $t_{\alpha/2} = t_{0.05/2} = t_{0.025} = 2.0322$ , i.e., regarding the t-distribution with 34 degrees of freedom, we have an area of 0.025 above 2.0322 and below the probability density function. The rationale behind this is that $P(-2.0322\leq T\leq 2.0322) = 0.95$ because of the simmetry of the t distribution.

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3 years ago

The table shows the circumference of a tree in centimeters, y, at 2 years.

kati45 [8]

Answer:b

Step-by-step explanation:

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3 years ago