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Salsk061 [2.6K]
3 years ago
15

Which of the following expression is equivalent to the expression below?

Mathematics
1 answer:
Nonamiya [84]3 years ago
4 0

Use the distributive property on the given expression.

4(2x + 11) = 4 * 2x + 4 * 11 = 8x + 44

Only choice C shows the correct expression.

Answer: C. 8x + 44

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Tim walks at a pace of 80 meters per minute. His school is 4 km away. If school begins at 8:00, what time does Tim need to leave
Naya [18.7K]

Answer:

7:10

Step-by-step explanation:

did the math

5 0
2 years ago
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The candle company is having its semiannual sale. All items are 40 percent off. If the original price of a candle basket is $120
Stells [14]

Answer:

It's C

Step-by-step explanation:

120 x 0.4 = 48

120 - 48 = 72

6 0
3 years ago
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Persons taking a 30-hour review course to prepare for a standardized exam average a score of 620 on that exam. Persons taking a
Alina [70]

Given:

30-hour review course average a score of 620 on that exam.

70-hour review course average a score of 749.

To find:

The linear equation which fits this data, and use this equation to predict an average score for persons taking a 57-hour review course.

Solution:

Let x be the number of hours of review course and y be the average score on that exam.

30-hour review course average a score of 620 on that exam. So, the linear function passes through the point (30,620).

70-hour review course average a score of 749. So, the linear function passes through the point (70,749).

The linear function passes through the points (30,620) and (70,749). So, the linear equation is:

y-y_1=\dfrac{y_2-y_1}{x_2-x_1}(x-x_1)

y-620=\dfrac{749-620}{70-30}(x-30)

y-620=\dfrac{129}{40}(x-30)

y-620=\dfrac{129}{40}(x)-\dfrac{129}{40}(30)

y-620=\dfrac{129}{40}(x)-\dfrac{387}{4}

Adding 620 on both sides, we get

y=\dfrac{129}{40}x-\dfrac{387}{4}+620

y=\dfrac{129}{40}x+\dfrac{2480-387}{4}

y=\dfrac{129}{40}x+\dfrac{2093}{4}

We need to find the y-value for x=57.

y=\dfrac{129}{40}(57)+\dfrac{2093}{4}

y=183.825+523.25

y=707.075

y\approx 707.1

Therefore, the required linear equation for the given situation is y=\dfrac{129}{40}x+\dfrac{2093}{4} and the average score for persons taking a 57-hour review course is 707.1.

4 0
3 years ago
You roll a standard number cube. Find P(number is not 2).
Morgarella [4.7K]
A standard number cube has 6 sides, and so the numbers are:

1,2,3,4,5,6

P, is any of those numbers that <em>are not 2</em>.

2 is one of the numbers in 6, and so it is 1/6 of the die.

6/6 - 1/6 = 5/6

C) 5/6 is your chance of getting a number that is not 2


hope this helps
7 0
3 years ago
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WHAT IS NINE -9 PLUS TAN- 10?
GuDViN [60]

Answer:

19

Step-by-step explanation:

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3 years ago
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