Answer:
44.80
9.27
Step-by-step explanation:
From the data:
Midpoint (x) : __ 25 _ 35 _ 45 _ 55 _ 65
Frequency (f) : _ 1 __ 15 __ 22 _ 8 __ 4
The mean (m):
Σfx / Σf
[(25 * 1) + (35* 15) + (45 * 22) + (55 * 8) + (65 * 4)] / (1 + 15 + 22 + 8 + 4)
= 2240 / 50
= 44.80
Standard deviation :
Sqrt[(Σ(X² * f) / Σf) - m²)]
[(25^2 * 1) + (35^2 * 15) + (45^2 * 22) + (55^2 * 8) + (65^2 * 4)] / (1 + 15 + 22 + 8 + 4)
(104650 / 50) - (44.80²)
1908.51 - 44.80^2
2093 - 2007.04
Sqrt(85.96)
= 9.27
I need help with these two question help me ASAP........
It’s 1:00 pm and I haven’t finish my homework plz helpp
Answer:
Concept: Vectors
The line demonstrates a 90 degree angle Hence they are Perpendicular by geometric qualitiesGive brainlistAnswer:
Omg...so complete fast......
A ladybug and ant move at constant speeds. The diagrams with tick marks show their positions at different times. Each tick mark represents 1 centimeter.
In your textbook pg. 111, scale the vertical and horizontal axes by labeling each grid line with a number. You will need to use the time and distance information in the tick-mark diagrams.
Which line shows the ladybugs movement? The ant?
Unit rate for the Ladybug? The ant?
How long does it take for the ladybug to travel 12 cm? The ant?
Answer:
From the graph we can say that ant is moving faster than the ladybug
Slope of the ant's movement will be steeper than the ladybug
Hence, line "v" denotes the speed of ant and line "u" denotes the speed of ladybug.Unit rate/slope of the graph is (distance traveled/elapsed time)
Unit rate of ant is 3/2 cm/sec and that of ladybug is 1 cm/sec.Ant takes (12×2/3) = 8 sec and ladybug takes (12×1) = 12 sec to travel 12 cm.Remember ant will take less time to travel a certain distance than ladybug.
Write an expression to explain the following word problem: Jeremy elimbed
25 feet up the mountain while Jessica olimbed 32 and a half feet up the
mountain higher than Jeremy
Answer:
Jessica = J(Jeremy)+32.5
Step-by-step explanation:
Jessica equals Jeremy + 32.5 feet.
Hope this helps, have a great day! :D
–2z − 7 need this done now
Answer:
the value of the z is -3.5
Step-by-step explanation:
According to the question, the following information is given
-2z - 7
Based on the above information
We assume that we have to determine the z value
so
-2z - 7 = 0
-2z = 7
z = 7 ÷ -2
= -3.5
Hence, the value of the z is -3.5
The same is to be considered and relevant too
out of 50 flags, 35 are triangular and of the remaining 15 some are rectangular and some are pentagonal. Satish chooses one flag randomly from all 50. Estimate the highest probability is that he picks which flag
Answer:
triangular
Step-by-step explanation:
triangular flags have a probability of 35/50, so it's the highest.
PLEASE ANSWER ASAP FOR BRAINLEST!!!!!!!!!!!!!!
Elena gets a base pay of $1,500 per month. She also earns a commission of 8% of the total sales dollars that she makes. What are Elena’s earnings for a month in which she has sales of $32,000?
Answer
4060 DollarsHere's why this is correct
and if Elena gets a base pay of $1,500 per month, then we add 8% of the total sales, ($32,000) and 8% of 32,000 is $2,560.
8% of 32,000 = 2,560
So we add $2,560 by $1,500 and we get 4060 Dollars.
Hope this helps! <3
what is equivalent to 2/3 divided by 5/6
Answer:
the answer is 4/5
Step-by-step explanation:
2/3 times the reciprocal of 6/5 and then that will give you 4/5
The histogram gives information about a fitness club
Answer:
a)
b) 99
Step-by-step explanation:
i'm not sure about a
but for b i got 99 members
Which of the following represents a function? OA X -5-1 9 8 -1 y 1 7 23 17 1 B. y NS x -4 NO 4 C. {(0,1),(3,2), (-8,3), (-7,2), (3,4)} D. -4 5 9 3 13
Given:
The different relations in the options.
To find:
The relation which represents a function.
Solution:
A relation is called a function if there exist a unique output (y-value) for each input (x-value).
In option A, there exist two outputs y=7 and y=1 for a single input x=-1. So, this is not a function.
In option B, there exist two outputs y=-5 and y=2 for a single input x=-1. So, this is not a function.
In option C, there exist two outputs y=2 and y=4 for a single input x=3. So, this is not a function.
In option D, there exist only one value of y for each x. So, this is a function.
Therefore, the correct option is D.
Answer:
D
Step-by-step explanation:
you probalby just want the answer
Find the area of the parallelogram shown below.
7
5
6
square units
Answer:
35
Step-by-step explanation:
A=bh=7*5=35
base= 7
height= 5
the formula is bh so you just multiply them and that's the area
Answer:
35 Sq. Units
Step-by-step explanation:
The Intuition for why the area of a parallelogram is A=bh (area = base x height)
The formula for the area of a parallelogram is base times height, just like the formula for the area of a rectangle.
Have a great day!
help now plsssssssss!!!
Answer:
5
Step-by-step explanation:
Descefdsvxerdazdxsazd4r
Translate this verbal expression to an algebraic expression.
Two times the sum of x and 10.
A 2(x - 10)
B 2x + 10
C 2(x + 10)
D 2 + x + 10
Answer:
C.
Step-by-step explanation:
It's c because you need the sum of x and 10 but both multiplied by 2. So it wouldn't be A nor B because they are both subtracting. That would leave you with C and D and d doesn't have anything to do with multiplying. I dunno made sense to me.
The population standard deviation for the height of college basketball players is 2.9 inches. If we want to estimate a 99% confidence interval for the population mean height of these players with a 0.45 margin of error, how many randomly selected players must be surveyed
Answer:
276
Step-by-step explanation:
Given :
Standard deviation (σ) = 2.9 inches
Error margin (E) = 0.45
Confidence interval = 99%
Using the relation to obtain the sample size (n)
n = [(Zcrit * σ) / E]²
Zcritical at 99% confidence interval = 2.576
n = [(2.576 * 2.9) / 0.45]²
n = [7.4704 / 0.45]²
n = 16.600888^2
n = 275.58951
n = 276 samples
Sample size
Find missing Heights
Answer:
15 feet. 10 plus 15=25 s0 therefore it is 15
PLEASE HELP I DONT WANT TO FAIL
Answer:
1
Step-by-step explanation:
12/8=1.5
15/10=1.5
1.5/1.5=1
Write an equation of the line passing through the point (1,5) that is parallel to the line y= -3x+5
Answer:
y=-3x+8
Step-by-step explanation:
y=mx+5, m=-3, x=1, y=5
5=(-3)(1)+b
5=-3+b
8=b
The variable s varies directly as the square of t. When s = 4, t = 12. Nick’s work finding the value of t when s = 48 is shown:
What is the first error, if any, in Nick’s work?
See in pic:
Answer:
C - He substituted incorrectly when calculating the constant of variation.
The first error, in Nick’s work is given inn option C, i.e. He substituted incorrectly when calculating the constant of variation.
What is constant of variation?Constant of variation is the ratio between two variables in a direct variation or the product of two variables in an inverse variation.
We have,
s = 4, and t = 12
Now according to the question,
The variable s varies directly as the square of t,
i.e.
s = kt²
So,
Substituting given values of s and t,
s = kt²
i.e.
4 = k × 12²
⇒
[tex]k = \frac{4}{144}=\frac{1}{36}[/tex],
Now,
for 48,
i.e.
s = kt²,
We get,
[tex]48 = \frac{1}{36} t^2[/tex],
i.e.
[tex]t^2=36 *48=1728[/tex]
[tex]t=\sqrt{1728} = \sqrt{3*576} =24\sqrt{3}[/tex]
So, this is the correct value for t.
Hence, we can say that the first error, in Nick’s work is given inn option C, i.e. He substituted incorrectly when calculating the constant of variation.
To know more about constant of variation click here
https://brainly.com/question/14254277
#SPJ2
a number has the same digit in its hundreds place and its hundredths place. how many times greater is the value of the digit in the hundreds place then the value of the digit in the hundredths place?
Answer:
The answer would be 1000.
Step-by-step explanation:
Im not completely sure if this is correct. but i hope it helps!
Have an amazing day!
Answer: it should be 1000
Order the following measures from least to greatest: 0.5 m, 30 in., 1.25 ft, 17 cm
Answer:
30 in, .5 m , 1.25 ft, 17 cm
Step-by-step explanation:
Answer:
17cm, 1.25 ft, 0.5 m, 30 inches
Step-by-step explanation:
I converted all of them to meters before deciding which one was least and which one was greatest.
Mrs. Rodriguez has a blueprint of her new house. The actual living room has a width of 20 feet and a length of 24 feet. If the scale used to make the blueprint is 12 inch = 4 feet, what is the length of the living room on the blueprint?
A number increased by five is negative fifteen. What is the number?
Answer:
The value of the number is: n = -20
Step-by-step explanation:
Given
A number increased by five is negative fifteen.
To determine
What is the number?
Let 'n' be the unknown number.
''A number increased by five'' means we have to add 5 to the number.
i.e.
n+5
Also, it is stated that a number increased by five is negative fifteen.
Thus,
[tex]n+5=-15[/tex]solving for n
[tex]n+5=-15[/tex]
Subtract 5 from both sides
[tex]n+5-5=-15-5[/tex]
Simplify
[tex]n=-20[/tex]
Therefore, the value of the number is: n = -20
Let f(x) be an exponential functionWhich transformations to the graph of f(x) would describe e - f(x - 3) ?
Look at the graph below carefully
Observe the results of shifting ={2}^{x}f(x)=2x
vertically:
The domain, (−∞,∞) remains unchanged.
When the function is shifted up 3 units to ={2}^{x}+3g(x)=2x +3:
The y-intercept shifts up 3 units to (0,4).
The asymptote shifts up 3 units to y=3y=3.
The range becomes (3,∞).
When the function is shifted down 3 units to ={2}^{x}-3h(x)=2 x −3:
The y-intercept shifts down 3 units to (0,−2).
The asymptote also shifts down 3 units to y=-3y=−3.
The range becomes (−3,∞).
9514 1404 393
Answer:
reflection over the x-axistranslation up 'e' units and right 3 unitsStep-by-step explanation:
The transformation ...
g(x) = a×f(x-h) +k
performs a vertical stretch by the factor 'a', and a translation by (h, k), which is h units right and k units up. When 'a' is negative, there is a reflection over the x-axis.
Here, we have 'a' = -1, h = 3, k = 'e'. So, the graph of f(x) has been ...
reflected over the x-axis
translated right by 3 units
translated up by 'e' units
__
Additional comment
We don't know if your 'e' is a typo. When talking about exponential functions, 'e' often refers to the base of natural logarithms, an irrational number approximately equal to 2.718281828459045...
Here's a graph of an exponential function transformed as you have indicated.
please help :) worth 10 points
Answer:
a. (0,3)
b. (-4,-3)
c. (-2,0)
d. (-1 1/3, 1)
e. (4,9)
f. (-3 1/3, -2)
Step-by-step explanation:
What is 7.44444444444 in fraction form
Answer:
186/25 i am pretty sure
Step-by-step explanation:
The Current Population Survey conducted by the Census Bureau records the incomes of a large sample of U.S. households each month. What will be the relationship between the mean and median of the collected data
Explanation:
There are 3 possible cases that describe the relationship between the mean and median of the collected data.
First case:
If the distribution is symmetric then, mean = median.
Second case:
For the positively skewed frequency distribution, the mean is greater than the median.
Third case:
For the negatively skewed frequency distribution mean is less than the median.
Help I don’t get this
which pair of of expressions are equivalent? A. 10(x+4) and 10x+14 B. 3(x+5) and 3x + 5 C. x+x+x+1+1+1 and 3(x+1) D. x+x+x+x+1+1+1+1 and 8x
Answer:
C. x+x+x+1+1+1 and 3(x+1)
Step-by-step explanation:
Algebraic Expressions
Some algebraic expressions are equivalent to others if the correct operations are done on them.
A. 10(x+4) must be operated by multiplying 10 by x and 10 by 4, thus:
10(x+4) = 10x + 40.
This choice is not correct
B. 3(x+5) must be operated by multiplying 3 by x and 3 by 5, thus:
3(x+5) = 3x + 15.
This choice is not correct
C. x+x+x+1+1+1 is equivalent to an expression where like terms are collected, that is. x+x+x=3x and 1+1+1=3, thus:
x+x+x+1+1+1=3x+3=3(x+1)
This choice is correct
D. x+x+x+x+1+1+1+1 in a similar way as explained above, like terms must be correctly collected: D. x+x+x+x=4x and 1+1+1+1=4, thus
D. x+x+x+x+1+1+1+1 = 4x+4 = 4(x+1)
This choice is not correct
If AUVW - ARST, what is the value of x?
Enter your answer in the box.
V
30
W
S
X
T
42
21
U
IR
X=
1
Answer: 15
Step-by-step explanation:
[tex]\dfrac{ST}{VW} =\dfrac{SR}{VU} \\\\ST=21\\VW=30\\SR=21\\VU=42\\\\\dfrac{x}{30} =\dfrac{21}{42} \\\\x \times 42=21 \times 30\\x \times 42=630\\x \times 42 \div 42=630 \div 42\\x=15[/tex]
You had $25 to spend on school lunches. After buying five of them, you have $15 left. How much did each lunch cost?
Answer:
2 each
Step-by-step explanation:
simple math