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3 years ago

7

Ryan is planning a party for 138 people.Paper plates are sold in packs of twelve.How many packs of paper does ryan need to buy s

o each guest has a plate

1 answer:

Artyom0805 [142]3 years ago

6 0

Divide the number of people by the number of plates per pack:

138 / 12 = 11.5

He need to buy 12 packs of plates to have enough.

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The perimeter of any polygon is the?

Wittaler [7]

Answer:

B

Step-by-step explanation:

perimeter is the sum of all sides. it's the distance around the figure.

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3 years ago

The scale of a model train is 1 inch to 13.5 feet. One of the cars of the model trial is 5 inches long. What is the length, in f

garik1379 [7]

If 1 inch is 13.5 feet, then 5 inches = (13.5 * 5) = 67.5 ft

8 0

3 years ago

Read 2 more answers

Manuel made at least one error as he found the value of this expression. Identify the step in which Manuel made his first error.

tamaranim1 [39]

Answer:

Manuel made his first mistake in step 2 leading to the continuous mistakes

Final answer=185

Step-by-step explanation:

Manuel made at least one error as she found the value of this expression. 2(-20) + 3[5/4(-20)] + 5[2/5(50)] + 4(50) Step 1: 2(-20) + 3(-25) + 5(20) + 4(50) Step 2: (3 + 2)(-20 + -25) + (5 + 4)(20 + 50) Step 3: 5(-45) + 9(70) Step 4: -225 + 630 Step 5: 405 Identify the step in which Chris made her first error. After identifying the step with the first error, write the corrected steps and find the final answer.

2(-20) + 3[5/4(-20)] + 5[2/5(50)] + 4(50)

Step 1: 2(-20) + 3(-25) + 5(20) + 4(50)

Step 2: -40 - 75 + 100 +

200

Step 3: -115 + 300

Step 4: 185

Manuel made his first error in step 2 by combining two different terms into one as he has done

(3 + 2)(-20 + -25) and also (5 + 4)(20 + 50)

Step 2: (3 + 2)(-20 + -25) + (5 + 4)(20 + 50)

Step 3: 5(-45) + 9(70) Step 4: -225 + 630 Step 5: 405

He should have evaluated the terms separately as I have done above, giving us 185 as the final answer in contrast to his 405 final answer.

5 0

3 years ago

Which of the following would produce a standard error of 2 points? n = 5 scores from a population with σ = 20 n = 5 scores from

baherus [9]

Answer:

n = 100 scores from a population with σ = 20

Step-by-step explanation:

The Central Limit Theorem estabilishes that, for a random variable X, with mean $\mu$ and standard deviation $\sigma$ , the sample means with size n can be approximated to a normal distribution with mean $\mu$ and standard deviation, which is also called standard error, of $s = \frac{\sigma}{\sqrt{n}}$

n = 5 scores from a population with σ = 20

$s = \frac{20}{\sqrt{5}} = 8.94$

n = 5 scores from a population with σ = 80

$s = \frac{80}{\sqrt{5}} = 35.78$

n = 100 scores from a population with σ = 20

$s = \frac{20}{\sqrt{100}} = 2$ .

This one is the correct answer.

n = 100 scores from a population with σ = 40

$s = \frac{40}{\sqrt{100}} = 4$ .

3 0

3 years ago

The following mapping statements describe the transformation of the vertices of △ABC to the vertices of its image, △A′B′C′. A(0,

victus00 [196]

Answer:

C. a reflection in the y-axis

Step-by-step explanation:

The mapping statement for the transformation of the vertices of the triangle ABC is given as following:

A(0,2)→A'(0,2)

B(2,9)→B'(-2,9)

C(4,2)→C'(-4,2)

To find the correct transformation for the given statement.

Solution:

From the given statements, the general transformation statement for the the vertices of the triangle can be given as:

$(x,y)\rightarrow (-x,y)$

The above transformation shows a reflection in the y-axis as the transformation in y-axis changes the sign of the x-coordinate of the point.

5 0

3 years ago