MATHEMATICS MIDDLE SCHOOL

Which ratios form a proportion?A. 4/12, 6/8
B. 16/12, 3/4
C. 3/2, 15/14
D.10/16, 5/8

Answers

Answer 1
Answer:


D. 10/16, 5/8 because 5x2=10 and 8x2=16

the equations are equal to each other so they form a porportion
Answer 2
Answer: To find proportions, you need to cross multiply for every option.  so when you set up a proportion for any of those options, they will look like this. 

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A Parking lot has a length of 100 yards wide and a length of 200 yards. The parking lot will be expanded by increasing both the length and the width by r yards. The area of the expanded lot will be twice the area of the original lot. Which equation can be used to find r?
F(x) = find the domain

Find the area of rectangle shown below

Answers

15/7x40/3=28 4/7 that is the answer 2 this problem
A= length * width
= 40/3 * 15/7
= 200/7 sq.m

\sqrt{125 + √(36 + 64) }
​

Answers

Answer:

\sqrt{125 + √(36 + 64) } \n \n \sqrt{125 + √(100) } \n \n √(125 + 10) \n √(135) \n √(9 * 15) \n 3 √(15)

by visual inspection, determine the best-fitting regression model for the data plot below. A. No pattern B. Quadratic C.Linear D. Exponential

Answers

Answer:

C) Linear

Step-by-step explanation:

We can see from the plot that the data approach a straight line.

This means we can draw a line of best fit through this data and it should hit several data points; thus the answer is linear.

By visual inspection, the best-fitting regression model for the data plot above is: C. linear.

What is a regression line?

A regression model can be defined as a statistical tool which best describes the behavior of a data set. Thus, a regression line is a type of line that best fits a set of data.

By visual inspection, we can logically deduce that the best-fitting regression model for the data plot shown in the image attached above is linear because there exist a direct relationship between the data set.

Read more on regression here: brainly.com/question/26059078

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Sasha timed how long she took to complete two laps of the track. Her first trip took 36.5s. Her second trip took 35.8s. Calculate the % decrease in the time she took to complete her second lap.

Answers

the present of decrease is around 1.92%

A jacket is discounted 30% off. The original was $150.00. What is the new price of the jacket after the discount?

Answers

$105. 30% of 100 is 30 and 30% of 200 is 60 it'd be 45 off because it's the number between the 2. Leaving 150-45=$105
$50. So, first we have to take the original price and divide it. $150.00 divided by 3 equals $50.

What is the lateral area of the rectangular prism? 

Assume the prism is resting on its base.

Answers

lateral\ area\ is:\n2\ rectangles\ 5in*15in\ and\ 2\ rectangles\ 4in*15in\n\nlateral\ area\ of\ the\ rectangular\ prism:\n\n2\cdot5\cdot15+2\cdot4\cdot15=150+120=270\ (in^2)\n\nAnswer:B
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