3 trays 18 shaded would the greater number be 18/3

Final answer:

To solve this problem, set up an equation using the given weights and solve for 'x' to find the weights of each friend's bag.

Explanation:

To solve this problem, we need to set up an equation based on the given information.

First, let's express the weights of Randall's, Seth's, and Joanna's bags in terms of 'x':

• Randall's bag: 3x - 7 pounds
• Seth's bag: 2x - 10 pounds
• Joanna's bag: 2x + 2 pounds

According to the problem, Randall's and Joanna's bags together weigh 3 times as much as Seth's bag. Mathematically, this can be written as:

(3x - 7) + (2x + 2) = 3(2x - 10)

Solving this equation will give us the value of 'x', which we can then use to find the weights of each friend's bag.

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Answer:

Randall=68 pounds, Seth's=40, Joanna's=52

Step-by-step explanation:

Randall's = 3x-7

Seth's = 2x-10

Joanna's = 2x+2

Randall's + Joanna's = 3 (Seth's)

Find X:

1. Form into an equation (add parentheses)
2. (3x-7) + (2x+2) = 3 (2x-10)
3. REmove parentheses on left side
4. 3x-7+2x+2 = 3 (2x-10)
5. Distribute right side
6. = 6x-30
7. 3x-7+2x+2 = 6x-30
8. Combine like terms
9. 5x-5=6x-30
10. subtract 5x from BOTH sides (always subtract, add, multiply, and divide both sides at the same time)
11. -5=x-30
12. Add 30 to BOTH sides
13. 25=x

Find how many pounds of trash each friend picked up:

Randall's:

1. 3x-7
2. plug in x  
3. 3(25)-7
4. Distribute
5. 75-7
6. = 68

Seth's:

1. 2x-10
2. 2(25)-10
3. 50-10
4. = 40

Joanna's:

1. 2x+2
2. 2(25)+2
3. 50+2
4. =52

Double check your answers:

Randall's+Joanna's= Seth's(3)

68+52=40(3)

120=120

You're good to go!

Answer:

2

Step-by-step explanation:

The rate of change is just the slope, which is -6/-3 or 2.

Final answer:

The rate of change of the linear function can be determined by calculating the slope of the line passing through the given points. The slope of the line passing through the points (2,9) and (-1,3) is 3. Therefore, the rate of change of the linear function is 3.

Explanation:

The rate of change of the linear function can be determined by calculating the slope of the line passing through the given points.

To find the slope, we can use the formula: slope = (change in y) / (change in x). By substituting the coordinates of the points (2,9) and (-1,3), we get a slope of 3.

Therefore, the rate of change of the linear function is 3.

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Answer:

I believe that the answer is 7.4 * 10^2 + 2

-- The answer to that equation is 754.8 if that was needed as well

Step-by-step explanation:

Please mark brainliest I would really like it if you did! I just want one brainliest...

Standard form is a way of writing down very large or very small numbers easily. 103 = 1000, so 4 × 103 = 4000 . So 4000 can be written as 4 × 10³ . This idea can be used to write even larger numbers down easily in standard form.Small numbers can also be written in standard form. However, instead of the index being positive (in the above example, the index was 3), it will be negative. The rules when writing a number in standard form is that first you write down a number between 1 and 10, then you write × 10(to the power of a number)., so I believe the answer would be 7.4*10^2+2

Hope I helped :)

Answer:

25 questions

Step-by-step explanation:

The answer to this question can be solved by setting up a proportion, or equivalent ratios (fractions).  Since we know that 18 questions was equal to 72% correct on the test, we can set up a proportion to find the total number of questions:

, where 'x' represents the total number of questions (or 100%) of the questions on the test.

Cross-multiply and divide:  72x = 18(100) or 72x = 1800

Divide both sides by 72:  72x/72 = 1800/72

Solve for x:  x = 25 questions