Using a calculator, you should get a sample standard deviation of approximately 2.5 hours
If you want to find the standard deviation by hand, you need to do the following steps
Find the mean muSubtract each data value from the mean to get (x-mu)Square each result from step 2, so we now have (x-mu)^2Add up each square from the previous stepDivide that result over n-1. In this case n = 14 is the sample size. This computes the sample variance.Finally, apply the square root to get the sample standard deviation.The teacher data set has a sample standard deviation of roughly 2.5 hours; compare this with the sample standard deviation of the students 1.9 hours, and we see that the teacher data set is more spread out. The larger the standard deviation is, the more spread out the data set will be.
A triangular flag has an area of 462 square feet. The base is 14 feet. What is the height?
Answer: 66ft
Step-by-step explanation:
A=1/2bh
462=1/2(14)(h)
462=7h
66=h
To decorate her bedroom, Jocelinde spent $54.11 on new bedding, $51.96 on paint, and 67.52 on accessories. About how much did she spend to decorate her bedroom?
Answer:
$173.59
Step-by-step explanation:
54.11+51.96+67.52=173.59
Answer:
$170!
Step-by-step explanation:
Add: $54.11 + 51.96= 106.07
Then: 106.07 + 67.52 = $173
Round it!= 173 rounded to the nearest tenth!
Answer: $170
Hope this helps!! -3-ll
Identify the terms, coefficients, and constants in the expression.
7h + 3
I need help now!!!!!
Step-by-step explanation:
7 is the coeffiecient
3 is the constant
Add. 41.600 + 79.436
79.852 120.442 120.960 121.036
Answer:
2346
Step-by-step explanation:
Compare the values 4 times 10^7 is times as much as 4 times 10^3
Answer:
4 x 10^7 - 4 x 10^3 = 39,996,000
Step-by-step explanation:
4 x 10^7 = 40,000,000
4 x 10^3 = 4,000
Which statement best describes the relationship between the graphs of the two linear equations below?
3
y=-2 +4
2
3x - 2y = -8
The lines are
parallel
5
The lines intersect
and are
perpendicular
The lines intersect
and are not
perpendicular
The lines are the
same
Answer:
Step-by-step explanation:
6
Hey, I just need to know if I was correct with my test.
[tex]\mathfrak{\huge{\pink{\underline{\underline{AnSwEr:-}}}}}[/tex]
Actually Welcome to the Concept of the Statistics,
If we see here, The Andrew is working for 20 hours and his pay for 20hours is, $175
so for 1 hour, he gets = 175÷20 => $8.75 per hour
, so now after 1 year, his pay increases by $1.05 per hour, then we have to add this new amount of pay in his old amount, so that we can show that his pay is actually INCREASED, so the new pay is given as,
$8.75 + $1.05 (per hour)= $9.80
so now his total pay is given as,
E= 9.80h
Option D.) is correct
solve this picture included.
1. 0.6
2. 10
3. -½
the answers are thrre ...
in an experiment, the control variable is d and the response variable is e. which variable is not manipulated, but measured, and represents the data being recorded?
. Solve for x. Show your work: 4(x+1)= -3x-10 :)
Answer:
x = - 2
Step-by-step explanation:
Distribute
4(x + 1) = -3x - 10
4x + 4 = -3x - 10
Subtract 4 from both sides of the equation
4x + 4 = -3x - 10
4x + 4 − 4 = −3x − 10 − 4
Simplify
Subtract the numbers
4x+4−4=−3x−10−4
4 = − 3 − 1 0 − 4
Subtract the numbers again
4 = − 3 − 14
Add 3x to both sides of the equation
4 = − 3 x − 1 4
4 + 3 = − 3 − 1 4 + 3
Simplify
Combine like terms
4 + 3 = -3x-14+3x
7x =−3x−14+3x
Divide both sides of the equation by the same term
7 = − 1 4
7 /7 = -14/7
Cancel terms that are in both the numerator and denominator
7x/7 = -14/7
x = -14/7
Divide the numbers
= − 1 4 /7
= − 2
What is the slope and y intercept of the
following equation? y = -5x - 2
Answer:
slope: -5 y intercept: (0,-2)
Step-by-step explanation:
y=mx+b
slope: m y int: b
Answer:
y intercept is -2 and slope is -5
Step-by-step explanation:
The equation is in slope-intercept form or y=mx+b.
This is awsome cause its super easy to find the slope and y intercept if you know exactly where to look.
so if try looking at the formula y = m x + b as y = (slope) x + (intercept)
if you subtracting b that just means your y intercept is going to be negative
and its the same with your m, if its negative your slope is gonna be negative.
hope this helped
How many 1-inch cubes fill one row of the carton?
Answer: 5 because it has 5 space left
Answer:
5
Step-by-step explanation:
i did this on i-ready and got it right Good luck!
what’s the greatest common factor of 65 and 55
Answer:
We found the factors and prime factorization of 55 and 65. The biggest common factor number is the GCF number. So the greatest common factor 55 and 65 is 5.
Answer:
5
Step-by-step explanation:
Since we are asked to find the greatest common factor, our best choice would first be to find the prime factorization of [tex]$65$[/tex] and [tex]$55$[/tex].
[tex]$65 = 5\cdot13.$[/tex]
[tex]$55 = 5\cdot11$[/tex]
From this, we can conclude that the greatest common factor is [tex]\boxed{5}[/tex].
what is 2 times 4 time 2
Answer:
16
Step-by-step explanation:
Answer:
16
Explanation:
2 x 4 = 8
8 x 2 = 16
192 students in 4 buses __ in each bus
1. How many centavos are there in P 125.75?
Answer:
3
Step-by-step explanation:
Answer:
please mark brainliest!
Step-by-step explanation:
15 centavos
A restaurant sells 140 burgers a day. If sales increase by 60%, how many burgers does the restaurant sell a day?
Question 8
1 pts
Salvador earns $13.00 per hour. If he works more than 40 hours a week
he earns time and a half. This week he worked 7 hours of overtime. How
much overtime pay did he receive?
Answer:
$136.50
Step-by-step explanation:
Time and a half = 13.00 + (13 × 1/2)
Time and a half = 13.00 + 6.50
Time and a half = $19.50
If he works 7 hours of overtime, and overtime means getting paid time and a half, we would multiply 7 hours by $19.50 to find the total amount he was paid
7 × 19.50 = 136.50
In overtime, he was paid $136.50
a) La autopista 10 en Haradh, Arabia Saudita, tiene más de 200
km en línea recta. Un automóvil viaja por esta carretera con
velocidad constante de 120 km/h durante 200 km.?
Explicación paso a paso:
Como no dijimos qué calcular, también podemos encontrar el tiempo que tarda el automóvil en viajar por la carretera.
Velocidad = Distancia / Tiempo
Tiempo = Distancia / Velocidad
Dado
Distancia = 200 km
Velocidad = 120 km / h
Sustituir
Tiempo = 200/120
Tiempo = 20/12
Tiempo = 1,67 horas
Por tanto, el tiempo que tarda el coche en recorrer la carretera es de 1,67 horas.
Se tarda aproximadamente 1.67 horas en viajar por la autopista de Arabia Saudita.
La velocidad es la relación entre la distancia total recorrida y el tiempo total empleado. Está dado por:
Velocidad = distancia/tiempoDeje que el tiempo necesario para viajar Arabia Saudita sea t. Por eso:
120 km/h=200 km/tt = 200/120
t=1.67 horasSe tarda aproximadamente 1.67 horas en viajar por la autopista de Arabia Saudita.
Obtenga más información sobre la velocidad en: https://brainly.com/question/4931057
HELP!! WILL BE MARKED BRAINLIEST!! 1. Justify each step in solving the equation 4x = 7(x - 3) by
writing areason for each statement
+Answer:
Statement
Reason
1. 4x = 7(x - 3)
1. given
2.
2. 4x =7x-21
3. - =-3x 21
3.
4.
4. X = 7
Answer: If u divide both sides by 3 you get the value o x 2 answer: Combine terms by transporting. The equation becomes 4x -7x = -21
Step-by-step explanation: 1. 4x=7(x-3) -----> Start with the given.
2. 4x=7x-21 -----> Distribute 7 by multiplying it to the individual terms inside the parenthesis. 7(x) - 7(3) = 7x -21
3. -3x=-21 ------> From step 2, combine like terms by transposing. The equation becomes 4x - 7x = -21. Simplifying, it becomes -3x = -21
4. x = 7 -----> Divide both sides by -3, you get the value o x.
Hope this helps :)
A nursery owner buys 8 panes of glass to fix some damage to his greenhouse. The 8 panes cost
$19.60. Unfortunately, he breaks 3 more panes while repairing the damage. What is the cost of
another 3 panes of glass?
Another 3 panes of glass cost $
Answer:
$8.85
Step-by-step explanation:
Step-by-step explanation: well if you take 23.60 and divide it by 8 you would get 2.95 times that by three and you would get 8.85 and there's your answer.
Answer:
7.35
because my kid got the question wrong
The question for the graph has a leading coefficient that is___. What are the possible degrees for the equation of this graph
Answer: Part one (NEGATIVE) Part two is C (EVEN DEGREES OF FOUR OR GREATER)
Step-by-step explanation:
Sammy wants to buy a new mattress priced at $419. He enters into an agreement to pay $26 a month for 24 months. How much will the finance charge be for this purchase?
A vine called the mile-a-minute weed is known for growing at a very fast rate it can grow up to 0.25 ft per day. How fast in inched per hour can the mile-a-minute weed grow up to?
Answer:
it can grow .125 inches an hour
Step-by-step explanation:
if thats not what u were looking for commet it and ill try to help more
Answer:
.125 inches per hour
Step-by-step explanation:
you divide .25 by 24, since there are 24 hours in a day and get .0104.... and then you multiply that by 12, since there are 12 inches in a foot and get .125 inches per hour.
Enter an equation in standard form to model the linear situation.
A barrel of oil was filled at a constant rate of 6.7 gal/min. The barrel had 12 gallons before filling began.
Answer: 6.7x - y = -12
Based only on the given information, it is guaranteed that AD = DB
Answer: True
Step-by-step explanation:
Answer:
true
Step-by-step explanation:
indicate the level of measurement for the data set describe .
certification ratings from core server given at the end of the semester
A.Norminal
B.Interval
C.Ratio
D.Ordinal
Explain how to find 5 - 7 by using counters . (Show your work)
Answer:
-3
Step-by-step explanation:
We have to find the difference:
We start with 5 yellow counters
Since we have to subtract more yellow counters than we have (5 instead of 8), we add 3 zero-pairs:
We subtract the 8 yellow counters:
We are left with 3 red counters, which means the result is -3
Please help me divide these equations to the simplist for ill give you brainlest
Answer:
Number 7# answer is 24/55
Number 8# answer is 14/13 (or 1 and 1/13)
Number 9# answer is 8/5 (or 1 and 3/5)
Number 10# is 36/19 (or 1 and 17/19)
Number 11# is 35/19 (or 1 and 16/19)
Number 12# is 22/63
Number 13# is 176/39 (or 4 and 20/39)
Number 14# is 306/145 (or 2 and 16/145)
Number 15# is 87/62 (or 1 and 25/62)
Step-by-step explanation:
Hope this helps and please give me brainlest!
Solve this equation: –3(x – 14) + 9x = 6x + 42
Solving this equation results in the statement 0 = 0. Because this is a true statement, the equation has a unique solution.
Solving this equation results in the statement 6 = 0. Because this is a false statement, the equation has infinitely many solutions.
Solving this equation results in the statement 0 = 0. Because this is a true statement, the equation has infinitely many solutions.
Solving this equation results in the statement 6 = 0. Because this is a true statement, the equation has no solution.
Answer:
Solving this equation results in the statement 0 = 0. Because this is a true statement, the equation has infinitely many solutions.
Step-by-step explanation: