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Inessa [10]
3 years ago
12

F(x)=x^2+4x-2 what is the vertex

Mathematics
2 answers:
Eduardwww [97]3 years ago
6 0

Answer:(-2,-6)

Step-by-step explanation:Put it in a graph and it should be the dot in the direct middle

satela [25.4K]3 years ago
3 0

Answer:

f(x)= (x+2)^2-6

Step-by-step explanation:

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You go to a restaurant with a friend. You purchase the items shown in the table below. There is a 7% sales tax and you wish to l
DENIUS [597]

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8 0
3 years ago
population mean =72 and standard deviation =10, what is standard error of distribution of sample means for n=4 and n=25
mixer [17]

Answer:

<u>The standard error of distribution for n = 4 is 5 and for n = 25 is 2.</u>

Step-by-step explanation:

1. Let's review the information given to us for solving the question:

Population mean = 72

Standard deviation  =  10

Sample₁ = 4

Sample₂ = 25

2. For finding the standard error of the mean, we use the following formula:

Standard error = Standard deviation / √Size of the sample

Standard error for Sample₁ = 10/√4

<u>Standard error for Sample₁ = 10/2 = 5</u>

Now, let's find the standard error for Sample₂

Standard error for Sample₂ = 10/√25

<u>Standard error for Sample₂ = 10/5 = 2</u>

4 0
3 years ago
Question 28 of 42
lina2011 [118]

Answer with explanation:

Properties of Rectangle

1. Opposite sides are equal and parallel.

2. Diagonals are equal and bisect each other.

3. Adjacent Sides are Perpendicular to each other.

→If two lines are parallel their slopes are equal and if two Lines are perpendicular, their product of slopes is -1.

→A Rectangle is a Quadrilateral also.

→Adjacent sides are perpendicular ,so , their slopes can't be equal.Product of their slopes should be equal to ,-1.

⇒Slope of AB × Slope of BC = -1

⇒Also, Slope of AB × Slope of BC = -1

Slope of AB × Slope of AD = -1

⇒ Slope of AD × Slope of CD = -1

Slope of CB × Slope of CD = -1

Option B And Option C

are statement which proves that polygon ABCD is not a rectangle.

5 0
3 years ago
Solve, using the substitution method.
Phoenix [80]
14-4x=2y
divide both sides by 2
7-2x=y
subsitute 7-2x for y
7-2x+2x=7
add like terms
7=7
true
therefor these 2 equations are the same and there are an infinite number of equations


answer is C
5 0
3 years ago
Read 2 more answers
What number represents the median? <br>01.10<br>2 14<br>3.16<br>4.20<br>5.29​
Mariulka [41]
The answer is 3.16




explanation:






.
8 0
2 years ago
Read 2 more answers
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