Answer:
This relation is not a function since two inputs i.e. -3 and 10 gives the same output i.e. 6.
Step-by-step explanation:
The domain is first number in the ordered pair.
Domain: {-2, -3, 4, 10}
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Answer:
The critical value is
Step-by-step explanation:
From the question we are told that
The sample size is n = 15
The level of significance is
The null hypothesis is
The alternative hypothesis is
Here is average time for previous year
is the average time for current year
Generally the degree of freedom is mathematically represented as
=>
=>
Generally from the student t distribution table the critical value for at a degree of freedom of for a two tailed test is
Option C: 126° is the correct answer
Step-by-step explanation:
When two lines intersect, the four angles are formed. The angles vertically opposite with same vertex are called vertical opposite angles.
The opposite vertical angles are equal.
In the given figure, the pairs of vertically opposite angles are e,h and f,g.
Given
∠e = 126°
The measurement of e and h will be equal as they are vertically opposite
So,
m∠e = m∠h
m∠h = 126°
Hence,
Option C: 126° is the correct answer
Keywords: Vertical angles, lines
Learn more about angles at:
#LearnwithBrainly
Answer:
4
Step-by-step explanation:
-4x +6x +12 = 20
2x + 12 = 20
2x = 8
x = 4
1.
Storing milk at temperatures smaller than 35°F can affect its quality of taste.
hence t > 35°F
storing milk at temperatures greater than 40°F is an unsafe food practice. hence
t < 40°F
so correct choice is
C. t > 35 AND t < 40
2.
15| x-7|+4=10|x-7|+4
subtracting 4 both side
15| x-7|+4- 4 =10|x-7|+4 - 4
15| x-7| = 10|x-7|
this is possible when |x-7| = 0
hence x - 7 = 0
x = 7
hence correct choice is
C. only x=7
3.
|x+1|+5=2
we know that , |x+1| ≥ 0
adding 5 both side
|x+1| + 5 ≥ 0 + 5
|x+1| + 5 ≥ 5
hence the relation |x+1|+5=2 is false.
C. no solution
|4x+12|=0
4x+12 = 0
x = -12/4
x = - 3
hence B. solution
|3x|=9
3x = 9
x = 9/3
x = 3
hence
A. two solutions