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marissa [1.9K]
3 years ago
15

Calculate the following percentage A) $200 of $410

Mathematics
1 answer:
Maslowich3 years ago
7 0
Answer: 48.781%
Plug it into a percentage calculator
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A quiz has thirty questions whose answers can only be correct or incorrect.
satela [25.4K]

Using a system of equations, it is found that Gina got 22 questions correct in the test.

<h3>What is a system of equations?</h3>

A system of equations is when two or more variables are related, and equations are built to find the values of each variable.

In this problem, the variables are:

  • Variable x: Number of questions she got correct.
  • Variable y: Number of questions she got wrong.

The test has 30 questions, hence:

x + y = 30 -> y = 30 - x.

She scored 152 points, hence, considering the value of each question:

8x - 3y = 152.

Since y = 30 - x:

8x - 3(30 - x) = 152

11x = 242

x = 242/11

x = 22

Gina got 22 questions correct in the test.

More can be learned about a system of equations at brainly.com/question/24342899

#SPJ1

4 0
2 years ago
Solve the following equation |x – 3| = 4. Show all work.
Igoryamba
<h2>Solving Equations with Absolute Values</h2><h3>Answer:</h3>

x = 7 and x = -1

<h3>Step-by-step explanation:</h3>

Solving for the Positive Absolute Value:

|x -3| = 4 \\ x -3 = 4 \\ x -3 +3 = 4 +3 \\ x = 7

Solving for the Negative Absolute Value:

|x -3| = 4 \\ -(x -3) = 4 \\ -(x -3) \cdot -1 = 4 \cdot -1 \\ x -3 = -4 \\ x -3 +3 = -4 +3 \\ x = -1

8 0
3 years ago
Read 2 more answers
The sum of 4 times a number and 7 more than the number is 80
marusya05 [52]

Answer:

(4×x) 7> 80  :)

Step-by-step explanation:

4 0
2 years ago
In a bag of 12 marbles, there is 6 blue and 6 red. Paul randomly selects 4 blue marbles and marbles and does not put them back o
Blababa [14]
4/12 times 2/8=8/96(simplify 8/96)
7 0
3 years ago
Help me Please ...
wariber [46]
8. 268.632

there is one

4 0
3 years ago
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