12.

1 answer:

8 0

Last year, the average math SAT score for students at one school was 475. The headmaster then introduced a new teaching method hoping to improve scores. This year, the mean math SAT score for a sample of students was 491. The headmaster concluded that the new teaching method produces higher SAT scores. The problem with reporting results this way is voluntary response. The information of how the teaching method isnot mentioned.

You might be interested in

I need help.. but we are only doing question 34 please answer quickly

TEA [102]

Answer: 33. r=13.6 34. m=12

Step-by-step explanation:

33.

-0.8+r=12.8

-0.8+r+0.8=12.8+0.8

r=13.6

34.

$\displaystyle\\-\frac{m}{3}=-4\\\\\frac{m}{-3}=-4$

Multiply both parts of the equation by -3:

$\displaystyle\\\frac{m}{-3}(-3)=(-4)(-3)\\\\ \frac{m(-3)}{-3} =12\\\\m=12$

4 0

1 year ago

I will mark brainliest! Order the following numbers from least to greatest.

Iteru [2.4K]

5/4, 1.3, 1 8/25 is ur answer

4 0

3 years ago

Read 2 more answers

Mrs. Barkley is making a snack mix out of different flavors of pretzels and chips. The weight of each snack package she used to

AlekseyPX

Answer:

20 ounces

Step-by-step explanation:

The line plot is attached below.

From the line plot, we can see that there is a total of 7 snack mix. Two of the snack mix weigh 1 and half (1.5) ounces each, one snack measure 2 and three quarter (2.75) ounce, three snack mix measure three and half (3.5) ounce each and one snack measure 3 and three quarter (3.75) ounce. Therefore the total weight of the snack mix is:

Total weight = (2 * 1.5) + (1 * 2.75) + (3 * 3.5) + (1 * 3.75)

Total weight = 20 ounces