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iren [92.7K]
3 years ago
12

QUICKLY HELP! Which ratio forms a proportion with 14/42? 1/4 7/21 12/40 28/80

Mathematics
2 answers:
emmainna [20.7K]3 years ago
4 0
14/42 is 1/3, and 7/21 is also 1/3, so 7/21.
viva [34]3 years ago
4 0
The answer is 7/21! Just multiply 7 and 21 by two to get 14 and 42
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5 The area of a rectangular lawn is 255 m². If its length is 15 m, find its perimeter.​
Marina CMI [18]
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3 0
3 years ago
Let fat be the explanatory variable and calories be the response variable; which scenario best describes ŷ = 121 + 1.42x?
emmasim [6.3K]

Using <u>linear function concepts</u>, it is found that the correct option is:

The amount of calories in a cheeseburger increases by 1.42 for every one gram of fat. The calorie amount estimated by this model is 121 if there are zero grams of fat.

A linear function is modeled by:

y = mx + b

In which:

  • m is the slope, which represents by how much y changes when x changes by 1.
  • b is the y-intercept, which is the value of y when x = 0.

In this problem:

  • The explanatory variable fat is the input.
  • The response variable calories is the output.

The equation is:

y = 121 + 1.42x

  • The slope is of 1.42, which means that the amount of calories increases by 1.42 when the amount of fat increases by 1 gram.
  • The y-intercept is of 121, which means that if there are 0 grams of fat, there will be 121 calories.

Thus, the correct option is:

The amount of calories in a cheeseburger increases by 1.42 for every one gram of fat. The calorie amount estimated by this model is 121 if there are zero grams of fat.

A similar problem is given at brainly.com/question/16302622

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RUDIKE [14]
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3 years ago
What is the identity property
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The identity property shows us that any number that adds zero to itself stays itself. The identity for multiplication tells us that any number multiplied by one is itself.

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