MATHEMATICS HIGH SCHOOL

Evaluate the expression 8 - 3 × 2 + 5.

7
15
29
56

Answers

Answer 1
Answer: First, multiply 2 by 3. That will give you 6. Then, subtract 6 from 8, you'll get an answer equivalent to 2. 2 + 5 = 7.
Answer 2
Answer:

Answer:7

Step-by-step explanation:

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Sarah is reading a book with 350 pages she calculated that the ratio of the pages she has read to the pages she has not read is 2 to 3 how many pages have Sarah read

Answers

Answer: 233.33

Step-by-step explanation:

350/3 = 116.66 (this is 1/3)

116.66 x 2 = 233.33  (this equals 2/3rds)

Hope this helps.

pd :)

Which linear function has the steepest slope?​

Answers

Answer:

the graph... it's slope is |2| and the chart is |1|

the absolute values are there because the questions only says "how steep"

not the direction

Step-by-step explanation:

Six times a number is greater than 3 less than 4 times the same number.

Answers

Answer:

0 < -3/2x

Step-by-step explanation:

6x > 4x -3

subtract 4x

2x < -3

divide by 2x

Question 3 (Multiple Choice Worth 5 points)(08.01)Ben takes a random sample of 25 students in his seventh-grade class and finds that 85% of the sample prefers math over science. There are 150 students in the seventh grade. Based on the sample proportion, about how many students in the seventh grade would be expected to prefer math over science?

25

85

150

128






Question 4 (Multiple Choice Worth 5 points)


(08.01)Mark wants to know how many families in his neighborhood plan to attend the neighborhood party. He puts all 80 of the neighborhood addresses in a hat and draws a random sample of 20 addresses. He then asks those families if they plan to attend the party. He finds that 20% of the families plan to attend the party. He claims that 20% of the neighborhood families would be expected to attend the party. Is this a valid inference?

No, this is not a valid inference because he asked only 20 families

No, this is not a valid inference because he did not take a random sample of the neighborhood

Yes, this is a valid inference because he took a random sample of the neighborhood

Yes, this is a valid inference because the 20 families speak for the whole neighborhood

Answers

A)The number of students in the seventh grade who would be expected to prefer math to science are: 128

B) The true statement about the inference is (c) Yes, this is a valid inference because he took a random sample of the neighborhood

What is sample?

A sample refers to a smaller, manageable version of a larger group. It is a subset containing the characteristics of a larger population.

A) Given that, the total number of students in seventh grade are: 150 students.

Now he took a sample of 25 students and find that the 85% of the sample prefers math to science.

This means that out of the sample the number of students who prefer math to science is:

= 85 / 100 x 25

= 21.25

Now, out of the total seventh graders the number of students who prefer math to science is:

21.25 x 150 / 25 = 127.5 ≈ 128

B) From the question, we understand that:

Mark draws a random sample of 20 addresses from all 80 of the neighborhood addresses.

The above selection is a random sampling technique

Therefore, the true statement about the inference is (c) Yes, this is a valid inference because he took a random sample of the neighborhood

Learn more about samples, click;

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Part 1 : Ben takes a random sample of 25 students in his seventh-grade class and finds that 85% of the sample prefers math over science. There are 150 students in the seventh grade. Based on the sample proportion, about how many students in the seventh grade would be expected to prefer math over science? 

Option 1 : 25

Option 2 : 85

Option 3 :150

Option 4 :128

Solutions - Convert the percent into decimal and multiply. 

85% of 150 = 0.85 * 150 

= 127.5 which is rounded to 128 

Part 2 : Mark wants to know how many families in his neighborhood plan to attend the neighborhood party. He puts all 80 of the neighborhood addresses in a hat and draws a random sample of 20 addresses. He then asks those families if they plan to attend the party. He finds that 20% of the families plan to attend the party. He claims that 20% of the neighborhood families would be expected to attend the party. Is this a valid inference?

No, this is not a valid inference because he asked only 20 families

No, this is not a valid inference because he did not take a random sample of the neighborhood

Yes, this is a valid inference because he took a random sample of the neighborhood

Yes, this is a valid inference because the 20 families speak for the whole neighborhood

Solutions : Plans to attend doesn't mean they would come. It is a 50/50 chance. 2/8 * 100% is 25%.  

Answer = (C) = Yes, this is a valid inference because he took a random sample of the neighborhood

Steve can run 1 2/9 miles in 10 minutes. How many miles can he run in 30 minutes?

Answers

Answer:

3 2/3

Step-by-step explanation:

remember to give me brainliest cause I helped you

 

If I = prt, the value of I when p = 1,000, r = 0.05, and t = 3 is

Answers

l=p*r*t
l=1000*0.05*3
l=150
In the formula P R and T are multipling.

I=1000*0.05*3
I=150
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