9514 1404 393
Answer:
- 42 students; (28 students); 70 students
- (60%); 40%; (100%)
Step-by-step explanation:
The percentages total 100%, so the missing percentage is
100% - 60% = 40%
The numbers on the number lines are proportional, so now you can write ...
?/100% = 28/40% . . . . . . ? total students
Multiplying by 100% gives ...
? = 28/0.4 = 70 . . . . . total students
Then the 60% portion of students can be found two ways:
60% × 70 = 42 students . . . . 60% of students
70 -28 = 42 students
Step-by-step explanation:
Margin of error = critical value × standard error
ME = CV × SE
At 95% confidence and 20 degrees of freedom, CV = 2.086.
SE = s / √n
SE = 0.16 / √21
SE = 0.035
So the margin of error is:
ME = 2.086 × 0.035
ME = 0.073
The dot on -1 is open, so the number -1 is not included. You need all real numbers greater than -1.
Answer: D
sometimes
Step-by-step explanation:
irrational numbers are numbers that cannot be expressed as a quotient of 2 numbers
rational numbers are numbers that can be expressed as a fraction.
for example let's take these examples of iirational numbers:
the 1st product <u>(</u><u>2</u><u>)</u><u> </u><u>can</u><u> </u><u>be</u><u> </u><u>written</u><u> </u><u>as</u><u> </u><u>a</u><u> </u><u>fraction</u><u> </u><u>but</u><u> </u><u>the</u><u> </u><u>second</u><u> </u><u>one</u><u> </u><u>cannot</u><u> </u><u>be</u><u> </u><u>written</u><u> </u><u>as</u><u> </u><u>a</u><u> </u><u>fraction</u>
Answer:
The point is NOT on the line.
Step-by-step explanation:
Step 1: Write out equation
y = -x + 3
Step 2: Define point
A(6, 3)
x = 6, y = 3
Step 3: Plug in coordinates
3 = -(6) + 3
3 = -6 + 3
3 ≠ -3
