Answers
Answer:
d. 7.3
Step-by-step explanation:
To get the standard deviation of a population of data, first take the sum of all the values, and divide it by the count to get the mean (average).
75 [1] + 90 [2] + 75 [3] + 80 [4] + 90 [5] + 80 [6] + 100 [7] + 85 [8] + 80 [9] + 85 [10] = 840.
Then divide by the count which is 10.
840/10 = 84 [This is the mean of the data.]
Then subtract every point of data from the mean and square it:
(75-84)^2 + (90-84)^2 + (75-84)^2 + (80-84)^2 + (90-84)^2 + (80-84)^2 + (100-84)^2 + (85-84)^2 + (80-84)^2 + (85-84)^2 = 81 + 36 + 81 + 16 + 36 + 16 + 256 + 1 + 16 + 1 = 540.
Then to get the variance, divide this all by the count.
540/10 = 54 [This is the variance of the data.]
Then all you have to do to get the standard deviation is take the square root of the variance.
√54 = 3√6 ≈ 7.3 [This is the standard deviation of the data.]
Related Questions
3. Factor the expression. (1 point)
-X2+3x+40
O-(x+2)(x-20)
O-(x-5)(x+8)
O (x-4)(x-10)
O-(x+5)(x-8)
Answers
Answer:
[tex] - (x + 5)(x - 8)[/tex]
2x2 forma exponencial
Answers
Can someone answer please? I really need help...
Answers
Answer:
See below.
Step-by-step explanation:
inequality:
1/2 x + 6 < 32
Solution:
Subtract 6 from both sides.
1/2 x < 26
Multiply both sides by 2.
x < 52
Graph: draw an open circle on 52. Shade to the left.
Cassie has a small cube-shaped box. Its volume is 64 cubic centimeters.
What is the area of one face of the box? Enter your answer in the box.
PLZ HELP DUE IN 5 MINUTES
Answers
Answer: one face is 16 square inches
Step-by-step explanation:
[tex]\sqrt[3]{64} = 4[/tex] side length
4 × 4 = 16 the area of one face
Can you please help me?
Answers
Answer:
f(2) = 0.5(2) +3.4f(3.5) = 0.5(3.5) +3.4f(15) = 0.5(15) +3.4f(21.3) = 0.5(21.3) +3.4Step-by-step explanation:
Put the given weight where x is in the function definition. You're only asked for the expression, not its value.
f(2) = 0.5(2) +3.4f(3.5) = 0.5(3.5) +3.4f(15) = 0.5(15) +3.4f(21.3) = 0.5(21.3) +3.4You would like to have $20,000 to use a down payment for a home in five years by making regular, end-of-month deposits in an annuity that pays 6% interest compounded monthly. How much of the $20,000 down payment comes from interest earned? Round your answer to the nearest cent. Do NOT round until you have calculated the final answer. Do NOT include the dollar sign in the answer box below.
Answers
Using compound interest, it is found that $5,172.56 comes from interest earned
What is compound interest?The amount of money earned, in compound interest, after t years, is given by:
[tex]A(t) = P\left(1 + \frac{r}{n}\right)^{nt}[/tex]
In which:
A(t) is the amount of money after t years. P is the principal(the initial sum of money). r is the interest rate(as a decimal value). n is the number of times that interest is compounded per year. t is the time in years for which the money is invested or borrowed.In this problem:
$20,000 is required in five years, hence t = 5, A(5) = 20000.Interest rate of 6%, hence r = 0.06.Monthly compounding, hence n = 12.First, we have to find the principal needed, hence:
[tex]A(t) = P\left(1 + \frac{r}{n}\right)^{nt}[/tex]
[tex]20000 = P\left(1 + \frac{0.06}{12}\right)^{12(5)}[/tex]
[tex]P = \frac{20000}{(1.005)^{60}}[/tex]
[tex]P = 14827.44[/tex]
Hence:
$14,827.44 comes from the principal.$5,172.56 comes from interest earned, as $20,000 - $14,827.44 = $5,172.56.To learn more about compound interest, you can take a look at https://brainly.com/question/25781328
Answer:
Step-by-step explanation:
Find the value of the expression below
8(15-4)/4^2-5
Answers
Answer:
8
Answer:
8 IS YOUR ANSWERStep-by-step explanation:
HAVE A GREAT DAYA group of friends go to the haunted museum
together. Each person pays $6.50 to get in. They
spend a total of $21 for the zombie exhibit. The
total cost is $60. Write an equation and then solve to
find how many people went to the haunted museum.
Answers
Answer: x = 6
anyone wanna bang?
Answers
Answer:
me
Step-by-step explanation:
Answer:
Yes pls
Step-by-step explanation:
im thirsty my guy
HHHHHHEEEEEELLLLLLPPPPPP!!!!!!
Answers
Answer:
Undefined
Step-by-step explanation:
if the line is like this __________________ then the slope is zero
If the line is vertical like up and down then the line is undefined.
Hope this helped!!!
Answer:
It is undefined slope so it would be x=3
Step-by-step explanation:
how much is 2x4x6x8=?
Answers
Answer:
384
Step-by-step explanation:
Answer:
your answer will be 384
Step-by-step explanation:
2x4x6x8=384
Help it’s due tomorrow I’ll mark you as the brainless but please help
Answers
Answer:
The slope of a line is
[tex] \frac{y2 - y1}{x2 - x1} [/tex]
Get 2 points off each line
(x1, y1)
(x2, y2)
And sub them into the formula.
The y intercept is where the line cuts the y axis (the vertical line)
From what I can make out the y intercept for the first part in question 12 is (0,-2) and for the third part is (0,0) but I can't see the second one.
It might help if you took a clearer photograph I'm so sorry but I can't really see it.
HELP PLEASE WILL GIVE BRAINLIEST
Answers
$1.21
Explanation:
What we know:
- $5.88=3 pounds of apples
- price went up by $0.75 per pound
First, we divide $5.88 by 3 to find out how much one pound of apples cost.
5.88/3
=1.96
Therefore, the new price of apples per pound is $1.96.
Because the old price of apples per pound was $0.75 cheaper, we subtract 0.75 from 1.96.
1.96-0.75
=1.21
Therefore, the old price of apples per pound was $1.21.
I hope this helps! Please comment if you have any questions.
What do the zero exponent and negative exponent properties mean.
Answers
Answer:
Negative exponents put the exponentiated term in the denominator of a fraction and zero exponents just make the term equal to one.
Step-by-step explanation:
Answer:
Step-by-step explanation:
Primero, cualquier número elevado a la potencia cero es uno. Segundo, los exponentes negativos indican una disposición. Si un exponente es negativo, necesita moverse de donde está al numerador o denominador. Investigaremos esta propiedad más adelante en el Conjunto de Problemas.
please help meeee T^T
Solve 14 -3x= 23
Answers
Answer: x = 3
Step-by-step explanation:
First you minus 23 by 14 then you get 9. Then you divide it by 3
Which equation is equivalent to 2x+3y=12
Answers
some possible equations equivalent to 2x+3y=12 would be:
1)
y=−2x+12/3
written form:
y= negative 2x plus 12 over/divided by 3
2)
y=−2/3x+4
written form:
y= negative 2 over/divided by 3x plus 4
3)
y=4−2/3x
written form:
y= 4 minus 2 over/divided by 3x
4)
y=12−2x/3
written form:
y= 12 minus 2x over/divided by 3
those are all i could think of! Hope this helped :)
If its too complicated comment and ill try to simplify it. remember ITS NEVER WRONG TO ASK QUESTIONS!!!
The equivalent expression for the equation 2x + 3y = 12 are:
x = 6 - 3y/2
y = 4 - 2x/3
What is an equation?An equation is a mathematical statement that is made up of two expressions connected by an equal sign.
We have,
2x + 3y = 12
We need to find an equivalent expression for this equation.
We can have many forms:
Case 1.
2x + 3y = 12
Subtracting 3y on both sides.
2x + 3y - 3y = 12 - 3y
2x = 12 - 3y
Dividing 2 into both sides.
x = 12/2 - 3y/2
x = 6 - 3y/2
Case 2.
2x + 3y = 12
Subtracting 2x on both sides.
2x + 3y - 2x = 12 - 2x
3y = 12 - 2x
Dividing 3 into both sides.
y = 12/3 - 2x/3
y = 4 - 2x/3
Thus the equivalent expression for the equation 2x + 3y = 12 are:
x = 6 - 3y/2
y = 4 - 2x/3
Learn more about equations here:
https://brainly.com/question/10188283
#SPJ5
Mitchell’s dog is 1/3 the age of Kayla’s cat . The sum of their ages is 12 years. How old is Mitchell’s dog?
Answers
Answer:
Mithcells dog is 3
Step-by-step explanation:
if its one third then you divide by 4 and get 3.
checking your answer
if mitchells dog is 3 and kaylas cat is three times that it would be 9
9+3=12
sorry if this is wrong :)
2.) state the equation for y
Answers
Answer:
y = 2^(x - 4)
Step-by-step explanation:
f(g(x)) = f(x - 4) = 2^(x - 4)
2) Which key word is a real life example of a positive integer?
Withdrawal
Above sea level
loss
decreased
Answers
Answer:
above sea level
Step-by-step explanation:
as anything bellow sea level would be negative meters and if you go up the number gets larger.
Change each percent to a decimal or a mixed decimal
43%
2 1/2%
13.6%
521%
Answers
21/2/100 = 0.105
13.6/100 = 0.136
521/100 = 5.21
It cost $5000 to feed
100 guest at a wedding. It
cost $2750 to feed 45
guests. What is the cost
per plate?
Answers
Answer:
Okays so for 100 guests we can make the equation $5000 ÷ 100 = $50.00
For 100 guests at the wedding it would cost $50.00 per plate
For 45 guests we can make the equation $2750 ÷ 45 = $61.111111111111, it would be a repeating decimal
For 45 guests at the wedding, it would cost $61.111111111111
I hope that this can help you! ^‿^
what's the answer? please help
Answers
Answer:
the slope is -7/3
Step-by-step explanation:
8-15/10-7
-7/3
can somebody find this out
Answers
Answer:
???
Step-by-step explanation:
?????what's the question
if a football player gains 40 yards on a play, but the next play he loses 10 yards. how many total yards does he have?
Answers
Answer:
30 yards
Step-by-step explanation:
40 - 10 =30
what are the x and y intercept for the inequality 2x + 4y < -8
Answers
A shoe store has 23 pairs off white tennis shoes out of 90 pairs of shoes. Estimate the percent of white tennis shoes.
Answers
Answer:
percent=25.56%
Step-by-step explanation:
Percentages
To know the percentage of having n elements out of a total of m elements, we calculate the ratio n/m and express the result as a percentage.
The shoe store has 23 pairs of white shoes out of 90 total pairs of shoes. The percent of white tennis shoes is calculated as follows:
[tex]\displaystyle percent= \frac{23}{90}*100\%[/tex]
Operating:
percent=25.56%
Can you please help me?
Answers
Answer: 325
Step-by-step explanation:
All your doing is multiplying
Answer:
The answer is 325
Step-by-step explanation:
the problem directly tells me that c(x)= 50x is how many words i can type in x minutes. then proceeds to ask me how many words i can type in 6.5 minutes.
in this case, x=6.5.
substitute and solve!
c(6.5)= 50(6.5)
c(6.5)= 325
according to this function, i can type 325 words in 6.5 minutes.
hope this helps!!
What ratio is equivalent to 12;6
Answers
Answer:
2:1, 4:2, 6:3, 8:4, 10:5, etc.
Step-by-step explanation:
Answer:
12 : 6 24 : 12 36 : 18 48 : 24 60 : 30
2:1 (just to name a few, Let me know if one the answer)
Step-by-step explanation:
multiply both by a number, kinda like a fraction.
Find the value of MN if AB = 9 cm, BC = 7.2 cm, and LM = 12 cm.
ABCD - LMNO
Answers
Answer:
9.6 cm
Step-by-step explanation:
Since the shapes are similar, we can write a proportion. Let x be the length of MN.
9/12 = 7.2/x Write a proportion.
9x = 12(7.2) Use cross products.
9x = 86.4 Multiply.
x = 9.6 Divide both sides by 9.
Side MN is 9.6 cm.
A piece of wire is 25 cm and has a weight of 10 grams. Another piece of the same wire is 30 cm long. Calculate the weight of the 30 cm piece of wire. working out please
Answers
Answer:
75 grams
Step-by-step explanation:
If 25 cm = 10 grams
Then 1 cm = 25/10
1 cm = 2.5 grams
To find 30 cm = 2.5 times 30 grams
30 cm = 75 grams