Answer:
2/9
Step-by-step explanation:
Scale factor = 10/45 = 2/9
Answer:
translate
Step-by-step explanation:
Answer:
-2
Step-by-step explanation:
41 - 8m - 57 = 0
41- 8m = 57
-8m = 57-41
-8m = 16
m = -16/8
m = -2
Answer:
29.7 is the standard deviation :)
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
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