If a sample has a small standard deviation, we can say the scores in the sample are consistent.
Standard deviation is a measure of dispersion. It measures the variation of the scores from the central value of the distribution.
A data is said to be consistent when this variation is less. Such data are easy to handle for studies.
When it is difficult to study the very large population, we choose samples from the population randomly. Each of these samples also have its own standard deviation. When this standard deviation is small, then the data is more consistent. That is, the scores in the sample goes well with those in the population.
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Simplify the fraction 61/82 as much as possible .
Answer:
61/82
Step-by-step explanation:
The answer is already reduced.
Answer:
61/82 its as low as possible
Step-by-step explanation:
I got it right
A boy scout troop is selling bags of popcorn and boxes of cookies to fund their troops next trip. The popcorn sells for 10 dollars a bag and the cookies sell for 5 dollars a box. The troop sells 32 items and makes 210 dollars. Write a system that could be used to determine how much popcorn and cookies the troop sold.
Answer:
c + p = 32
5c + 10p = 210
Step-by-step explanation:
Given that :
Cost of popcorn per bag = $10
Cost of. Cookies per box = $5
Total items sold = 32
Total.amout made = $210
Let number of cookies = c ; number of popcorn = p
c + p = 32
5c + 10p = 210
c = 32 - p
5(32 - p) + 10p = 210
160 - 5p + 10p = 210
5p = 50
p = 10
c = 32 - p
c = 32 - 10
c = 22
I'LL GIVE BRAINLIST
Select all the rates that are unit rates.
Answer:
B and D
Step-by-step explanation:
Which of the following equations has an infinite number of solutions?
A. 3x – 3 = –4x
B. 2y + 4 – y = 16
C. 7x + 5 = 4x + 5 + 3x
D. 6y – 2 = 2(y – 1)
The equation 7x + 5 = 4x + 5 + 3x has an Infinite number of solutions. which is the correct answer would be option (C).
What is the equation?The equation is defined as mathematical statements that have a minimum of two terms containing variables or numbers that are equal.
We have to determine which equation has an infinite number of solutions
As per option (C),
⇒ 7x + 5 = 4x + 5 + 3x
Combine comparable terms to simplify both sides of the problem.
You have become left with 7x+5 = 7x+5.
On both sides, subtract 7x.
This gives you 5=5.
Subtraction 5 from both sides
⇒ 0 = 0
Thus, this equation has an Infinite number of solutions.
Hence, the correct answer would be an option (C).
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A square photograph has a side length of 7n centimeters. What is the area of the photograph
Answer:
ggggggggggggggggggggg
Step-by-step explanation:
ggggggggggggggggggggggggg
Answer:
area =s×s
=7n×7n
=49n^2
What ratios are equivalent to 4:3?
7:2
12/42
28:21
42:12
Find angles in triangles
Find the value of x in the triangle shown below.
o
X =
53°
20
970
Answer:
x = 30°
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Geometry
All angles in a triangle add up to 180°Step-by-step explanation:
Step 1: Set Up Equation
53° + 97° + x° = 180°
Step 2: Solve for x
Combine Like Terms: x° + 150° = 180°Isolate x: x = 30°HELP PLEASE
WHAT IS THE SOLUTION
Answer:
the solution is going to be (-6, 2)
Evaluate each expression if a = 2, b = -34
3. - 9 (a-6)
Answer:
36
Step-by-step explanation:
I'm assuming the expression we're solving here is -9(a-6).
-9(2-6)
(-9*2)-(-9*6)
(-18)-(-54)
Simplify.
-18+54
It equals 36.
Hope this helps.
if I have 19 red marble and 22 white marble. what is the ratio
Answer:
19:22
Step-by-step explanation:
you put red first since it came first
someone pls pls pls help me
Answer:
it may be helpful for u
plzzzzzmark it as a brilliant ans(03.03)
Which of the following is a factor of 8x* + 1331? (1 point)
O 2x- 11
O 4x² + 22x + 121
O 4x2- 44x + 121
O None of the above
Answer:
It would be none of the above. The factors would be (2x+11)(4x^2-22x+121).
Step-by-step explanation:
The measures of the angles of a triangle are shown in the figure below. Solve for x
Juan hires an electrician. • Juan pays a one-time fee of $30. Juan also pays $45 for each hour the electrician works. How much will Juan pay if it takes the electrician 6.5 hours to complete the job?
Answer: 322.50
Step-by-step explanation:
45 * 6.5 = 292.5
292.5 + 30 = 322.5
.................................
Answer:
.................................
Step-by-step explanation:
Solve for x please... it's for a test and it's really hard
I'll give you all my points, thanks
4(x - 1) - 3 (x - 2) = - 8
find the amount of hardener needed for 600g of carbon fiber if the ratio of the composite is 40% matrix to 60% fiber and the ratio of the matrix is 100 parts resin to 27 parts of hardener
The hardener needed for 600 g of carbon fiber is 85.04 g.
We are given that the ratio of the composite is 40 % matrix to 60 % fiber.
This can be written as:
Matrix : fiber = 40 % : 60 %
Matrix : fiber = 40 : 60
Matrix : fiber = 2 : 3
Now, we know that the carbon fiber = 600 g
Matrix : 600 g = 2 : 3
Matrix / 600 = 2 / 3
Matrix = 1200 / 3 g
Matrix = 400 g
Also, we are given that the ratio of the matrix is 100 parts resin to 27 parts of hardener.
This means that:
Hardener = 27 / 127 of matrix.
Hardener = 27 / 127 × ( 400 g )
Hardener = 85.04 g
Therefore, the hardener needed for 600 g of carbon fiber is 85.04 g.
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Find the difference using the number line.
answer:
c. 7.2
explanation:
on a number line, move the number 7.4 left to tenths. the result is 7.2.
What happens to the sign (> , < , ≥ , ≤) when divided by a negative number?
HELPPPPPPPPP
Answer:
Step-by-step explanation:Sometimes, it is necessary to multiply an inequality by a negative number in order to solve the inequality. Compared to multiplying inequalities by positive numbers, there's one extra step. It's called flipping the inequality sign. Let's see what exactly this looks like.
What’s the answer to this question
An equation in slope intercept form of the line is,
⇒ y = 1/4 x + 5
What is Equation of line?
An equation in slope intercept form of the line with slope m is,
y = mx + b
Where, b is y-intercept.
Given that;
In the graph y-intercept at 5.
And two points are (-4, 4) and (4, 6).
Now, Let two points on the graph are (-4, 4) and (4, 6).
Hence, Slope (m) = 6 - 4 / 4 - (-4)
= 2/8
= 1/4
And, On the graph y - intercept is 5.
Hence, Value of y - intercept (b) = 5
So, An equation in slope intercept form of the line is,
y = 1/4 x + 5
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Help please today
Question 6(Multiple Choice Worth 4 points)
(02.05 LC)
Which of the following statements best describes the effect of replacing the graph of y = f(x) with the graph of y = f(x) - 11?
A. The graph of y = f(x) will shift up 11 units.
B. The graph of y = f(x) will shift right 11 units.
C. The graph of y = f(x) will shift left 11 units.
D. The graph of y = f(x) will shift down 11 units.
hellppp
plsssssssssss
Suppose that 13 inches of wire costs 65 cents. at the same rate, how many inches of wire can be bought for 35 cents?
One can buy 7 inches of wire for 35 cents.
In both the British imperial and American customary systems of measurement, the inch serves as a unit of length.
A problem can be solved using the unitary method by first determining the value of a single unit, and then multiplying that value to determine the required value.
The cost of 13 inches of wire is 65 cents.
Using the unitary method,
65 cents = 13 inches of wire
1 cents = ( 13 / 65 ) inches of wire
Now, multiplying 35 on both sides of the equation we get:
35 × 1 cents = ( 13/ 65) × 35 inches of wire
35 cents = ( 455 / 65 ) inches of wire
35 cents = 7 inches of wire
Hence, 7 inches of wire can be bought for 35 cents.
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the grass in jamie's yard grew 161616 centimeters in 101010 days. it was growing at a constant rate.
The Constant Growth Rate of plant is a 1.6 cm per day.
According to the statement
We have to find that the constant rate at which the plants grow.
So, For this purpose, we know that the
Constant rate (g) is employed to seek out present value of stock within the share which depends on current dividend, expected growth and required return rate of interest by investors.
From the given information:
The grass in jamie's yard grew 16 centimeters in 10 days.
Then
Proportion states that two ratios or fractions are equal
The grass in Jamie yard grew 16 centimeters in 10 days. it growing at a relentless rate.
The constant rate = 16/10
The constant rate = 1.6 cm
So, The Constant Growth Rate of plant is a 1.6 cm per day.
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PLEASE HELP MY ASSIGNMENT IS DUE IN 3 HOURS!!!!
Answer:
76.3 degrees
Step-by-step explanation:
We use inverse cosine to find the angle.
arccos(1.9/8) = 76.26 deg
While playing basketball, Jada’s heart rate goes up to 140 beats per minute. While jogging, her heart beats 40 times in 15 seconds. Assuming her heart beats at a constant rate while jogging, which of these activities resulted in a higher heart rate? Explain your reasoning.
Answer:
Basketball
^^
Step-by-step explanation:
10 x 6 = 60 (there are 60 seconds in a minute)
25 x 6 = 150
jogging = 150
basketball = 160
^^
Hope this helped!! <3
ASAP Help me please!!
=============================================
Work Shown:
Refer to the diagram below. I've added a line segment and two variables y and z. This forms two isosceles triangles.
The central angle 56 degrees subtends the same arc as the inscribed angle y. By the inscribed angle theorem, this means y = 56/2 = 28. The inscribed angle is always half of the central angle (when both angles subtend the same arc).
Focus on the smaller isosceles triangle that has angles 56, z and z. Those three angles add to 180
z+z+56 = 180
2z+56 = 180
2z = 180-56
2z = 124
z = 124/2
z = 62
Now focus on the larger isosceles triangle (angles y = 28, x+z and x+z)
We'll use the same trick as before.
(x+z)+(x+z)+(y) = 180
(x+62)+(x+62)+(28) = 180 ... plug in z = 62 and y = 28
2x+152 = 180
2x = 180-152
2x = 28
x = 28/2
x = 14
which is the graph of x-y=1
Write a system of equations to describe the situation below, solve using any method, and fill in the blanks. Norma is a salon owner. Yesterday, she did 1 haircut and colored the hair of 2 clients, charging a total of $217. Today, she did 2 haircuts and colored the hair of 1 client, charging a total of $155. How much does Norma charge for her services? PLEASE ANSWER
Answer:
Cost of haircut = $93
Cost of colouring hair = $31
Step-by-step explanation:
Let
Cost of haircut = x
Cost of colouring hair = y
The equations
x + 2y = 217 (1)
2x + y = 155 (2)
From (1)
x = 217 - 2y
Substitute x = 217 - 2y into (2)
2x + y = 155
2(217 - 2y) + y = 155
434 - 4y + y = 155
-3y = 155 - 434
-3y = -279
y = -279 / -3
= 93
y = $93
Substitute y = 93 into (1)
x + 2y = 217
x + 2(93) = 217
x + 186 = 217
x = 217 - 186
= 31
x = $31
Cost of haircut = $93
Cost of colouring hair = $31
What is f(g(13))? A. 16 B.26 C. 32 D. The function is undefined
The answer is 32 and there’s a diagram but I need to know how to get there without said diagram.
Answer:
See explanation
Step-by-step explanation:
f(g(13))=
f(16)=32
**The diagram is the only reference to solving f(g(13)). f(x) or g(x) isn't provided for you, so just use the diagram.