History: Please answer questions number 2 and 3

Step-by-step explanation: Note - Since you asked multiple questions, I will solve the first question...

Please answer questions number 2 and 3, №18012001, 27.12.2020 21:54

Mathematics

I WILL GIVE BRAINLIEST PL 1. A 100-point test has x questions worth 2 points apiece and y questions worth 4 points apiece. a. Write an equation that describes all possible numbers of questions that may be on the test. b. If you have 24 questions worth 4 points apiece, how many questions will be worth 2 points apiece? 2. Louise has $36 in five-dollar bills and singles. How many of each type of bill does she have? a. Write an equation. b. If Louse has 2 five-dollar bills, how many singles does she have? 3. The Ramy family bought 4 sandwiches and

Step-by-step answer

P Answered by Master

5

A. 2x+4y= 100

B. 2x +4(24)=100
2x+96=100
2x=4
x=2 (2 questions worth 2 pts a piece)

2. x= 5$ bills y= singles
a. 5x+y=36
b. 5(2)+y=36
10 + y=36
y=26 (26 singles)
3. x= sandwich cost y=salad cost
a. 4x+3y=24
b. 4(3.75)+3y = 24
15+3y=24
2y=9
y=4.50 (4.50$ per salad)
4: X = pounds of roast beef, y = pounds of shrimp Roast beef = $4 per pound
Shrimp = $10 per pound
a. Total $96
4 + 10 = 96 b. 4(0)+10=96
10 = 96
= 9.6
The most shrimp Andy can buy is 9.6 lbs

Mathematics

A test is worth a total of 150 points and contains 70 questions. Some of the questions are worth 2 points and some are worth 4 points. The test has BLANK questions worth 2 points and BLANK questions worth 4 points. Emma answered a certain number of questions correctly and scored 100 points. If she answered 46 questions worth 2 points correctly, the number of questions worth 4 points she answered correctly is BLANK fill in the blanks please

Step-by-step answer

P Answered by Specialist

14

65 two-point questions, and 5 four-point questions.

Emma answered 2 four-point questions.

Step-by-step explanation:

1. Assigning variables and writing equations

We will set the number of 2 point questions as "x" and number of 4 point questions as "y"

We know that:

x+y=70 (number of 2 point questions+number of 4 point questions=total number of questions)

2x+4y=150 (number of points that a two point question is worth*number of two point questions+number of points that a four point question is worth*number of four point questions=total points on test)

2. Combining equations

x+y=70, 2x+4y=150

We will solve one of these equations.

x+y=70

x=70-y

Next, we will substitute the other equation with this solution.

2*(70-y)+4y=150

140-2y+4y=150

2y=10

y=5

Use this solution to find x.

x+y=70

x+5=70

x=65

We found that there are 65 two-point questions, and 5 four-point questions.

3. Finding Emma's test results

In this case, we know how many two-point questions she answered. So, we will only be using one variable in this equation, which is y.

46*2+4y=100

92+4y=100

4y=8

y=2

So, she answered 2 questions correctly.

Mathematics

I WILL GIVE BRAINLIEST PL 1. A 100-point test has x questions worth 2 points apiece and y questions worth 4 points apiece. a. Write an equation that describes all possible numbers of questions that may be on the test. b. If you have 24 questions worth 4 points apiece, how many questions will be worth 2 points apiece? 2. Louise has $36 in five-dollar bills and singles. How many of each type of bill does she have? a. Write an equation. b. If Louse has 2 five-dollar bills, how many singles does she have? 3. The Ramy family bought 4 sandwiches and

Step-by-step answer

P Answered by Specialist

5

A. 2x+4y= 100

B. 2x +4(24)=100
2x+96=100
2x=4
x=2 (2 questions worth 2 pts a piece)

2. x= 5$ bills y= singles
a. 5x+y=36
b. 5(2)+y=36
10 + y=36
y=26 (26 singles)
3. x= sandwich cost y=salad cost
a. 4x+3y=24
b. 4(3.75)+3y = 24
15+3y=24
2y=9
y=4.50 (4.50$ per salad)
4: X = pounds of roast beef, y = pounds of shrimp Roast beef = $4 per pound
Shrimp = $10 per pound
a. Total $96
4 + 10 = 96 b. 4(0)+10=96
10 = 96
= 9.6
The most shrimp Andy can buy is 9.6 lbs

Mathematics

A test is worth a total of 150 points and contains 70 questions. Some of the questions are worth 2 points and some are worth 4 points. The test has BLANK questions worth 2 points and BLANK questions worth 4 points. Emma answered a certain number of questions correctly and scored 100 points. If she answered 46 questions worth 2 points correctly, the number of questions worth 4 points she answered correctly is BLANK fill in the blanks please

Step-by-step answer

P Answered by Specialist

14

65 two-point questions, and 5 four-point questions.

Emma answered 2 four-point questions.

Step-by-step explanation:

1. Assigning variables and writing equations

We will set the number of 2 point questions as "x" and number of 4 point questions as "y"

We know that:

x+y=70 (number of 2 point questions+number of 4 point questions=total number of questions)

2x+4y=150 (number of points that a two point question is worth*number of two point questions+number of points that a four point question is worth*number of four point questions=total points on test)

2. Combining equations

x+y=70, 2x+4y=150

We will solve one of these equations.

x+y=70

x=70-y

Next, we will substitute the other equation with this solution.

2*(70-y)+4y=150

140-2y+4y=150

2y=10

y=5

Use this solution to find x.

x+y=70

x+5=70

x=65

We found that there are 65 two-point questions, and 5 four-point questions.

3. Finding Emma's test results

In this case, we know how many two-point questions she answered. So, we will only be using one variable in this equation, which is y.

46*2+4y=100

92+4y=100

4y=8

y=2

So, she answered 2 questions correctly.

Mathematics

Mr. Martin’s math test which is worth 100 points has 29questions. Each problem is worth 2points or 5 points. X represents number of 5point questions and y represents questions worth 2 points. X+y=29, 5x+2y=100 How many problems of each point value are on the test?

Step-by-step answer

P Answered by PhD

1

there are 14 5point problems and 15 2point problems on the test.

Step-by-step explanation:

x represents number of 5 point questions and y represents questions worth 2 points.

The total number of questions in the test is 29. It means that

x + y = 29

x = 29 - y

Mr. Martin’s math test is worth 100 points. It means that

5x + 2y = 100 - - - - - - - - -1

Substituting x = 29 - y into equation 1, it becomes

5(29 - y) + 2y = 100

145 - 5y + 2y = 100

- 5y + 2y = 100 - 145

- 3y = - 45

y = - 45/-3

y = 15

x = 29 - y = 29 - 15

x = 14

Mathematics

Mr. Martin’s math test which is worth 100 points has 29questions. Each problem is worth 2points or 5 points. X represents number of 5point questions and y represents questions worth 2 points. X+y=29, 5x+2y=100 How many problems of each point value are on the test?

Step-by-step answer

P Answered by PhD

1

there are 14 5point problems and 15 2point problems on the test.

Step-by-step explanation:

x represents number of 5 point questions and y represents questions worth 2 points.

The total number of questions in the test is 29. It means that

x + y = 29

x = 29 - y

Mr. Martin’s math test is worth 100 points. It means that

5x + 2y = 100 - - - - - - - - -1

Substituting x = 29 - y into equation 1, it becomes

5(29 - y) + 2y = 100

145 - 5y + 2y = 100

- 5y + 2y = 100 - 145

- 3y = - 45

y = - 45/-3

y = 15

x = 29 - y = 29 - 15

x = 14

Mathematics

The expression 2t+3f+4m+10e gives the number of points a student earns on a test when the student correctly answers t true-false questions, f fill-in-the-blank questions, m multiple-choice questions, and e extended-response questions. which statement is not true? a) the coefficient 2 indicates that each correct true-false question earns 2 points. b) the coefficient 3 represents the points earned for each fill-in-the-blank question. c) the term 10e represents the total number of points earned from 10 extended-response questions. d) the term 4m represents

Step-by-step answer

P Answered by PhD

1

C) The term 10E represents the total number of points earned from 10 extended-response questions

Step-by-step explanation:

From the question;

The expression 2T+3F+4M+10E =points a earns on a test

Number of true-false questions correctly answered=2T

Number of Fill-in -the blank questions correctly answered=3 F

Number of multiple choice questions correctly answered= 4M

Number of extended-resonse questions correctly answered =10 E

However, the question does not mention the number of qusetions in each category. Like how many true-false questions were there. It only tells you the number of correct true-false qusetions that were answered. So saying that there were 10 extended-response questions is incorrect.

Mathematics

The expression 2t+3f+4m+10e gives the number of points a student earns on a test when the student correctly answers t true-false questions, f fill-in-the-blank questions, m multiple-choice questions, and e extended-response questions. which statement is not true? a) the coefficient 2 indicates that each correct true-false question earns 2 points. b) the coefficient 3 represents the points earned for each fill-in-the-blank question. c) the term 10e represents the total number of points earned from 10 extended-response questions. d) the term 4m represents

Step-by-step answer

P Answered by PhD

1

C) The term 10E represents the total number of points earned from 10 extended-response questions

Step-by-step explanation:

From the question;

The expression 2T+3F+4M+10E =points a earns on a test

Number of true-false questions correctly answered=2T

Number of Fill-in -the blank questions correctly answered=3 F

Number of multiple choice questions correctly answered= 4M

Number of extended-resonse questions correctly answered =10 E

However, the question does not mention the number of qusetions in each category. Like how many true-false questions were there. It only tells you the number of correct true-false qusetions that were answered. So saying that there were 10 extended-response questions is incorrect.

Mathematics

Can someone pls help me I will give u brainliest if you do 1. A 100-point test has x questions worth 2 points apiece and y questions worth 4 points apiece. a. Write an equation that describes all possible numbers of questions that may be on the test. b. If you have 24 questions worth 4 points apiece, how many questions will be worth 2 points apiece?

Step-by-step answer

P Answered by Specialist

4

a. 2x+4y=100

b. 2 questions

Step-by-step explanation:

For a, you can write out hat equation, which can test if a specific combination will work, and once you have one variable, you can solve another

For b, you can plug 24 into the equation

2x+4(24)=100

2x+96=100