Mathematics, 13.02.2020 22:37 kers

Which description is represented by a discrete graph?
Kiley bought a platter for $19 and several matching bowls that were $8 each. What is the total cost before tax?
The temperature at 9 am, was 83' F and is heating up at an average rate of 6°F per hour. What is the temperature x
hours later?
Juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. What is the total amount of
calories he consumed?
A bottle contained 2,000 mL of liquid and is being poured out at an average rate of 300 mL per second. How much liquid is
left in the bottle after x seconds?

Answers: 2

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Answers

Answer from: moncho6222

The only discrete variable found lies in the first situation: "Kiley bought a platter..."

Step-by-step explanation:

Discrete and Continuous Variables

The graph of some functions looks very different if one (or both) of the variables are continuous or discrete. If they are both continuous, the graph will look like an uninterrupted line or a curve. The graph will look like scattered points or interrupted segments if at least one of the variables is discrete.

Discrete variables are those who can be counted i.e. are countable in a finite time, and cannot take values in between. Let's analyze the proposed options:

Kiley bought a platter for $19 and several matching bowls that were $8 each. What is the total cost before tax?

A platter and bowls can be counted. There are no 0.15 platters. It's a discrete variable

The temperature at 9 am, was 83' F and is heating up at an average rate of 6°F per hour

The temperature cannot be counted but measured. It's not discrete

Juan ate an egg with 78 calories and some cereal with 110 calories per serving for breakfast. What is the total amount of calories he consumed?

The eggs are countable, but not the calories from 'some cereal' because its amount has not been specified as boxes, spoons, cups or something countable.

A bottle contained 2,000 mL of liquid and is being poured out at an average rate of 300 mL per second. How much liquid is left in the bottle after x seconds?

The volume of liquid in a bottle is not countable unless you counted the drops or similar variable.

Summarizing, the only discrete variable found lies in the first situation

Answer from: momneedshelphmwk

A : Kiley bought a platter for $19 and several matching bowls that were $8 each. What is the total cost before tax?

Step-by-step explanation:

Answer from: Quest

18.8 cubic inches.

step-by-step explanation:

volume of a cone = $\frac{1}{3}$ πr²h

r = 1.5 inches

h = 8 inches

pi = 3.14

volume of our cone = $\frac{1}{3}$ × 3.14 × 1.5² × 8 = 18.84 square inches

or equals to 18.8 square inches rounded up to nearest tenth.

Answer from: Quest

the sum of all the angles in a triangle are equal to 180

so you can add the 3 given angles together to equal 180:

5y + 2y + 2y = 180

or since all three angles have the same letter, combine the 3 angles to equal 180:

9y = 180

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Which description is represented by a discrete graph?
Kiley bought a platter for $19 and sever...

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