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MatroZZZ [7]
3 years ago
5

Bryce took a quiz that consisted of true-or-false questions and multiple-choice questions. The true-or-false questions were wort

h 1 point each, and the multiple-choice questions were worth 2 points each. Bryce only knows that he answered 8 questions correctly and earned a total of 14 points. To determine the number of each type of question that he answered correctly, he wrote the system of linear equations x + y = 8 and x + 2 y = 14.
Which ordered pair is a solution to this system of linear equations, and what does the ordered pair represent?
(0, 8); Bryce answered 0 true-or-false questions correctly and 8 multiple-choice questions correctly.
1. (2, 6); Bryce answered 2 true-or-false questions correctly and 6 multiple-choice questions correctly.
2.(6, 2); Bryce answered 6 true-or-false questions correctly and 2 multiple-choice 3.questions correctly.
4. (8, 0); Bryce answered 8 true-or-false questions correctly and 0 multiple-choice questions correctly.
Mathematics
2 answers:
Aliun [14]3 years ago
7 0

Answer:

Answer would be (2, 6); Bryce answered 2 true-or-false questions correctly and 6 multiple-choice questions correctly.

7nadin3 [17]3 years ago
5 0

Answer:

B

Step-by-step explanation:

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Suppose B is a proper subset of C,
Tomtit [17]

Answer:

Maximum: 7

Minimum: 0

Step-by-step explanation:

A proper subset B of a set C, denoted B\subset C, is a subset that is strictly contained in C and so necessarily excludes at least one member of C.

This means that the number of elements in B must be at least 1 less than the number of elements in C. If the number of elements in C is 8, then the maximum number of elements in B can be 7.

The empty set is a proper subset of any nonempty set. Hence, the minimum number of elements in B can be 0.

3 0
3 years ago
When converted to a household measurement, 9 kilograms is approximately equal to a
scZoUnD [109]

Answer:

D) 19.8 lbs

Explanation:

1kg in household measurement is equal to 35.274 ounces. 35.274*9=317.466 ounces.

1kg is also equal to 2.205 lbs. 9*2.205=19.8416

9 kg is also equal to 9000 grams, but grams are not a part of the household measurement system

a) 9000 grams. b) 9000 ounces. c) 19.8 ounces. d) 19.8 pounds.

This leaves us with 19.8 lbs

5 0
3 years ago
There are 42 students 21 are in 7th grade 14 are in 8th 7 are in ninth whats the probability of an eighth grader winning
Varvara68 [4.7K]

Answer:

The probability of an eighth grader winning is 1/3

Step-by-step explanation:

Total no. of students = 42

Number of students in 7th grade = 21

Number of students in 8th grade = 14

Number of students in 9th grade = 7

Probability of event = \frac{\text{Favorable outcomes}}{\text{Total outcomes}}

So,the probability of an eighth grader winning= \frac{14}{42}=\frac{2}{6}=\frac{1}{3}

Hence The probability of an eighth grader winning is 1/3

3 0
3 years ago
Gregorio took two tests. Find his z-score for each test. (Remember: The number of standard deviations between a score and the me
never [62]
I found the missing parts of this question.
Test A 
<span>Gregorio’s score </span><span>62 </span>
<span>Mean score </span><span>80 </span>
<span>Standard deviation </span><span>6 </span>

<span>Test B </span>
<span>Gregorio's score </span><span>70 </span>
<span>Mean score </span><span>90 </span>
<span>Standard deviation </span><span>10 </span>


<span>a. </span><span>Test A: 3; Test B: 2; Test A </span>
<span>c. </span><span>Test A: –2; Test B: –3; Test A </span>
<span>b. </span><span>Test A: –3; Test B: –2; Test B </span>
<span>d. </span><span>Test A: –3; Test B: –2; Test A
</span>

Refer to the attachment for the formula of z score:

test A: z = (62-80)/6  = -18/6 = -3
test B: z = (70-90)/10 = -20/10 = -2

B. <span>Test A: –3; Test B: –2; Test B </span>

5 0
3 years ago
Including an 18% tip, Ms. Guy and her friends spent $74.93 on dinner. What was the cost of the dinner excluding the tip?
12345 [234]

Answer:

61.45

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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