Answer:
C. Yes, the variation of the sample means is small.
Step-by-step explanation:
edge
The mean of the population possible using these samples is; C. Yes, the variation of the sample means is small
What is a sample mean?Sample mean is an average of a set of data . And, the sample mean can be used to determine the standard deviation, central tendency, and the variance of a data set.
The sample mean can be applied to various uses, including calculating population averages.
Where, the sample variance is a measure of the degree to which the numbers in a list are spread out. And the numbers given are close to each other;
If the numbers in a list are all close to the expected values; the variance will be small and if they are far away, the variance will be more.
Hence, the correct option is C.
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unit 1 test algebra 2
6) The solution set of the equation x² + 8x - 15 = 5x + 13 is {-7, 4}.
7) The zeroes of the expression 2x (x - 5) (x + 7) are {-7, 0, 5}.
8) The expression (x + 5) (x + 8) + (x + 5)(2x - 3) can be written as a product of (x + 5) and (3x + 5).
9) There are 2 integer solutions on the interval 0 ≤ x ≤ 10 for the equation x³ - 5x² + 2x + 13 = 5.
We have,
6)
x² + 8x - 15 = 5x + 13
Rearranging the equation:
x² + 8x - 5x - 15 - 13 = 0
x² + 3x - 28 = 0
Now, factorize the quadratic equation:
(x + 7)(x - 4) = 0
Setting each factor equal to zero:
x + 7 = 0 or x - 4 = 0
Solving for x:
x = -7 or x = 4
7)
2x (x - 5) (x + 7) = 0
Setting each factor equal to zero:
2x = 0 or x - 5 = 0 or x + 7 = 0
Solving for x:
x = 0 or x = 5 or x = -7
8)
(x + 5) (x + 8 + 2x - 3)
Simplifying the expression inside the parentheses:
(x + 5) (3x + 5)
9)
x³ - 5x² + 2x + 13 = 5
Substitute each integer value from 0 to 10 into the equation and count the number of solutions.
Substituting each integer value,
x = 0,
x³ - 5x² + 2x + 13 = 5
0 - 0 + 0 + 13 = 5
13 = 5
Not true.
Similarly,
x = 2,
x³ - 5x² + 2x + 13 = 5
8 - 20 + 4 + 13 = 5
25 - 20 = 5
5 = 5
True.
x = 4,
x³ - 5x² + 2x + 13 = 5
64 - 80 + 8 + 13 = 5
85 - 80 = 5
5 = 5
True.
There are two integer solutions:
x = 2 and x = 4.
Therefore,
The solution set of the equation x² + 8x - 15 = 5x + 13 is {-7, 4}.
The zeroes of the expression 2x (x - 5) (x + 7) are {-7, 0, 5}.
The expression (x + 5) (x + 8) + (x + 5)(2x - 3) can be written as a product of (x + 5) and (3x + 5).
There are 2 integer solutions on the interval 0 ≤ x ≤ 10 for the equation x³ - 5x² + 2x + 13 = 5.
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8а +а – 3 = 6а – 2а - 3
Answer:
a=0
Step-by-step explanation:
Answer: a=0
Step-by-step explanation:
8a+a−3=6a−2a−3
Step 1: Simplify both sides of the equation.
8a+a−3=6a−2a−3
8a+a+−3=6a+−2a+−3
(8a+a)+(−3)=(6a+−2a)+(−3)(Combine Like Terms)
9a+−3=4a+−3
9a−3=4a−3
Step 2: Subtract 4a from both sides.
9a−3−4a=4a−3−4a
5a−3=−3
Step 3: Add 3 to both sides.
5a−3+3=−3+3
5a=0
Step 4: Divide both sides by 5.
5a /5= 0/5
Answer: a=0
(hope that was helpful )
PLEASE HELP I WILL GIVE BRAINLIEST IF 2 PEOPLE ANSWER! Find the area of a square with side length x when x is equal to the given value. Are the area of a square and the length of its side directly proportional? Justify Your Answer.
x = 15 inches.
The area of the square is __ square inches.
Answer:
The area of the square is 15²
the area of a square and the length of its side are directly proportional because The area of the square is x²=> when its edge decreases, the area of the figure decreases
Step-by-step explanation:
carrue babysits her neighbor's children. Her earnings are giving by the equation y= 13.4x , where x represents the number of hours she worked and y represents the amount of money she earned. Heather earns $14.00 per hour mowing her neighbor's lawns. Who makes more money per hour? Find the difference of the two rates.
Answer:
Heather makes 0.60 more money per hour than Carrue because Heather makes $14.00 per hour while Carrue makes $13.40 per hour.
Step-by-step explanation:
14.00-13.40=0.60
Which graph shows the solution to the system of inequalities?
y <= x + 2
y > 2x – 3
Answer:
b
Step-by-step explanation:
6
HELP EASY 10 POINTS
If the circumference of a circle is 35 inches which is closest to the area
Answer:
about 97.48
Step-by-step explanation:
Answer:Well first we have the circumference of the circle 35 our first step is to divide it by pi to see what the radius is:
35/pi=11.1408460164
Now that we know what the radius of the circle we are going to square it and then multiply by pi to find what is the area of the circle:
11.1408460164²=124.118449961
124.118449961xpi=389.929610573 square inches
Now that we know what the area is of the circle we need to calculate which area is closest to the answer which happens to be A. 380 square inches.
Pretty easy please answer. 50 points and brainliest. If you spam you dont get anything.
Step-by-step explanation:
The independent variable is m the number of minutes a hose runs.
The dependent variable is g the number of gallons the hose sprays.
The number of gallons a horse sprays depends on the minutes the hose runs. Lets say the hose sprays a gallon in a minute. And let us say the hose runs for 5 minutes. That would mean the hose would have sprayed 5 gallons of water.
The minutes a hose runs does not depend on the gallons the hose sprays.
can someone answer this
Answer: It's obviously D.
Step-by-step explanation:
Nathan spins 2 different spinners at the same time. There are a total of 10 possible outcomes. Which pair of spinners did Nathan spin? A B 1 2. AB E с 5 3 E с 1 2 D 4 D А B B 1 2 care 1 2 E с D с D 3
Answer:
Since the spinners have been spun simultaneously, every side on each of the spinner carries equal probability of landing. In order for there to be only 10 possible outcomes, no more no less, the spinners cannot be identical. One of the spinner in two sided while the other spinner must then be a five sided spinner. Choosing this particular pair of spinners gives Nathan 10 possibilities of combinations.
Hope that answers the question, have a great day!
Step-by-step explanation:
So how are 1/2 and 4/8 Similar?
Answer:They both equal 1 half
Step-by-step explanation:To put it a lil more simply, 1/2 = 0.5 and 4/8 also = 0.5
Answer:
1/2 is 4/8. 1/2 is just 4/8 but simplified. So 12/36 simplified is 1/3, 24/48 is 1/2
help me I'm bout to breakdown on this and cry help I'm rlly not ok
Answer:
বাংলা ৬ নাম্বার প্রশ্নের উওর টা কি
Answer: 3/5 is the correct answer
I need help with this question ASAP
write 6.1 as a mixed number and as an improper fraction. Do not try to simplify your answer
Answer:
6 1/10 mixed 61/10 improper
Step-by-step explanation:
Are 3/5 and 18/32 equivalent ratios? Explain how you know (be specific). If you just say yes or no you will not get full credit. *
Answer:
No they are not equivalent,
Step-by-step explanation:
3 x 6 is 18 and 5 x 6 is 30, not 32 so it is non-equivalent
whoever answers this correctly gets brainliest.
Answer:
it would be 140 . 40+3+140=180
Step-by-step explanation:
order from least to greatest
3-4-140
Brainlest-Pls help me pls thank you sm In advance
Answer: 90 divided by 45 equals 2 45+45=90
Step-by-step explanation:
How would you graph the inequality 5x+8y>=250? Pls help me...
Answer: hope this helps I guess?
Step-by-step explanation:
TIME REMAINING 24:59 Ten members of Balin's soccer team ran warm ups for practice. Each member ran the same distance. Their combined distance was StartFraction 5 Over 6 EndFraction of a mile. To find the distance that each member ran, Balin wrote the expression below. StartFraction 5 Over 6 EndFraction divided by 10 Which expression is equivalent to Balin's expression?
Answer:
The equivalent expression = 1/12 of a mile
Step-by-step explanation:
Total distance of 10 members of the Balin's soccer club =5/6 of a mile
To find the distance that each member ran, Balin wrote the expression:
5/6 ÷ 10
Which expression is equivalent to Balin's expression?
5/6 ÷ 10
= 5/6 × 1/10
= 5/60
= 1/12 of a mile
Each member of the Balin's soccer club ran 1/12 of a mile
The equivalent expression to 5/6 of a mile divided by 10 members of the Balin's soccer club is 1/12 of a mile
Answer:
brah
Step-by-step explanation:
Please answer this question
B=3V/h
Solve for V
Answer:
V = [tex]\frac{Bh}{3}[/tex]
Step-by-step explanation:
Given
B = [tex]\frac{3V}{h}[/tex] ( multiply both sides by h )
Bh = 3V ( isolate V by dividing both sides by 3 )
[tex]\frac{Bh}{3}[/tex] = V
Help me plzplzplzplz1
Answer:
The answer is 400 when you round it off to the nearest hundred.
Nine times the input minus seven is equal to the output. If the input is -1, what is the output?
2
-2
-72
-16
Answer:
-16
Step-by-step explanation:
Answer:
-16
Step-by-step explanation:
-
5x -4y = -23
-5x + 9y =8
Answer:
Let's solve for x.
5x−4y=−23−5x+9y
Step 1: Add 5x to both sides.
5x−4y+5x=−5x+9y−23+5x
10x−4y=9y−23
Step 2: Add 4y to both sides.
10x−4y+4y=9y−23+4y
10x=13y−23
Step 3: Divide both sides by 10.
10x
10
=
13y−23
10
x=
13
10
y+
−23
10
Answer:
x=
13
10
y+
−23
10
Step-by-step explanation:
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Please help for brainliest.
Answer:
C
Step-by-step explanation:
Beatrice threw a stone one and seven fourteenths yards. Tilly threw a stone nine fourteenths of a yard. What is a reasonable estimate of the difference between their two throws?
a. 1 yard
b. one and one half yards.
c. 2 yards
d. two and one half yards
Given f(x) = -3x - 2, find the following:
a. f(3)
b. f(-1)
c. f(-2)
Answer:
Answer is f(3)
Step-by-step explanation:
i did test
Which is an equation of the line that passes through the point (5, -2) and has a slope of -3?
A.
y = 3x - 13
B.
y = -3x - 13
C.
y = -3x + 13
D.
y = -x - 3
Answer:
y = -3x + 13
Step-by-step explanation:
y = -3x + 13 is the only formula there that has a slope -3 (as shown in -3x) and is the only one that passes through point 5,-2.
The equation of the line that passes through the point (5, -2) and has a slope of -3 will be y = - 3x + 13. Then the correct option is C.
What is a linear equation?A connection between a number of variables results in a linear model when a graph is displayed. The variable will have a degree of one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
The slope of the line is given as,
y = -3x + c
The equation of the line is passing through the point (5, -2). Then we have
- 2 = - 3(5) + c
- 2 = - 15 + c
c = 13
The equation of the line that passes through the point (5, -2) and has a slope of -3 will be y = - 3x + 13. Then the correct option is C.
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I need help will mark BRAINLIEST if right!!!!!!!!
Answer:
Line EH
it says I have to
Answer:
EH
Step-by-step explanation:
TRUST ME
WILL MARK BRAINLIEST
Which products result in a perfect square trinomial? Select three options.
(negative x + 9)(negative x minus 9)
(x y + x)(x y + x)
(2 x minus 3)(negative 3 + 2 x)
(16 minus x squared)(x squared minus 16)
(4 y squared + 25)(25 + 4 y squared)
Answer:
(xy+x) (xy+x)
(2x-3) (-3+2x)
(4y2+25) (25+4y2)
Step-by-step explanation:
Thanks for the brainliest
Answer:
B, C, and E
Step-by-step explanation:
THIS IS FOR 60PTS SO ANSWER Explain how you got your answer 4x-20+2x-12=10
Answer:
x = 0.333...(repeating or .34 if u round)
Step-by-step explanation:
add 4x and 2x= 6x
20- 12 = 8
6x + 8 = 10
-8 -8
6x = 2
6 6
x = 0.333...(repeating or .34 if u round)
36 / (-6) x -15 =
help please
Answer:the answer is 90
Step-by-step explanation:
