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olga2289 [7]
2 years ago
10

Please help If you can! I'm doing Math! and I need some help!

Mathematics
1 answer:
Kisachek [45]2 years ago
3 0

Answer:

x ≈ 370

Step-by-step explanation:

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−3x(−4x+x)−x(−x−2x)−4x(4x+3x)
777dan777 [17]

Answer:

- 3x( - 4x + x) - x( - x - 2x) - 4x(4x + 3x) \\  \\    = 12 {x}^{2}  - 3 {x}^{2}  +  {x}^{2}  + 2 {x}^{2}  - 16 {x}^{2}  - 12 {x}^{2}  \\  \\  =  - 16{x}^{2}

7 0
2 years ago
Hey! can you please do these 5 questions correctly? Thanks and i need answers ASAP :)) (will give 15 points and brainliest)
kolezko [41]

Answer:

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Step-by-step explanation:

6 0
2 years ago
Read 2 more answers
A study was conducted to find out if a new exercise program was more effective than an old one at improving cardiovascular fitne
WITCHER [35]

Answer: (B)

Step-by-step explanation:

An independent sample test compares two sample means in order to determine the statistical significance of the difference between their population means.

The independent sample test would be the best hypothesis test for this study because:

1. There was a random samples of data from the population

2. There was no relationship between the subjects in each sample. That is;

- subjects in the first group were not also in the second group

- subjects in the first group did not influence subjects in the second group and vice versa.

3. There was independence of observations in this study. Each subject in each group was separately observed and each subject has a given fitness performance score.

4. There are values on both the dependent and independent variables.

- the dependent variable is FITNESS PERFORMANCE and for each subject, it is dependent on either the OLD EXERCISE PROGRAM or the NEW EXERCISE PROGRAM.

5. Our dependent variable her is a continuous variable as we see from the range of fitness scores. The lowest score is 19 and the highest score is 73. This shows that the variable is continuous. All the other scores fall in between.

6. Our independent variable is a categorical variable. Categorized into OLD EXERCISE PROGRAM and NEW EXERCISE PROGRAM.

4 0
3 years ago
Arthur earned 136$ in three weeks. He goes back to school in one more week. He needs at least 189$ to buy the new coat they he w
saul85 [17]

Answer:

189 minus 136 equals 53 so the answer is 53 dollars

3 0
3 years ago
Given a 14-in pizza is cut into 8 slices and a 10 in pizza is cut into 6 slices, find the following:
Dafna11 [192]

Answer:

14"

19.25 in^2 per slice

10"

13.09 in^2 per slice

Step-by-step explanation:

area of 14"

3.14x7^2=153.94 in^2

153.94/8=19.25 in^2 per slice

area of 10"

3.14x5^2=78.54 in^2

78.54/6=13.09 in^2 per slice

5 0
3 years ago
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