The standard error of the sample mean is 0.7835140.
What is Standard Deviation?A standard deviation (or σ) is a measure of how dispersed the data is in relation to the mean. Low standard deviation means data are clustered around the mean, and high standard deviation indicates data are more spread out.
Given:
Population mean = 62.95
Population standard deviation = 5.65
Sample size = 52
The standard error of the sample mean :
= Standard deviation / √(sample size)
= 5.65 / √(52)
= 0.7835140
Hence, the standard error is 0.7835140.
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Answer:
It says to round to NEAREST HUNDRETH, so answer is 0.78 on plato.
Step-by-step explanation:
points match up with the real number system
Group of answer choices
fraction
number line
reciprocal
numerator
25
Evaluate the expression a^2+b+3 for each set of given values. Enter each
number in the provided box. If a=4 and b=3 (HINT: substitute the variables
then solve)
Answer:
22
Step-by-step explanation:
a^2+b+3 and a=4, b=3
4^2+3+3
16+3+3
22
Determine the solution for x^2+2x+8
Answer:
[tex]x=-1-i\sqrt{7}[/tex], [tex]-1+i\sqrt{7}[/tex]
Step-by-step explanation:
[tex]x=\frac{-b+\sqrt{b^2-4ac} }{2a}[/tex]
[tex]x=\frac{-b-\sqrt{b^2-4ac} }{2a}[/tex]
Here a=1, b=2 and c=8
Greg spent 2/3 of his total money on a collector’s comic book. He has $8.50 left. If there was no tax added to the cost, how much did Greg spend on the comic book?
Answer:
4.25
Step-by-step explanation:
i knew the answer!!!
The amount that Greg spent on the comic book is; $17
Let the amount of money he had initially be x.
Thus, if he spent ⅔ of that initial amount, it means the amount he will have left is;
Amount left = x - ⅔x
Amount left = ⅓x
Since he had $8.5 left, then;
⅓x = 8.5
x = 3 × 8.5
x = $25.5
Thus;
Amount he spent on the comic book is;
⅔ × 25.5 = $17
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What is the solution set of the equation
|2x-3|=11
An education budget went from $800,000 to $1,120,000. What is the approximate percent increase?
Answer:
The percentage increase is 40%
Step-by-step explanation:
Percentage Increase =
Final Value - Starting Value
Starting Value x 100 (the whole fraction, not just the bottom)
Hope this helps!!!! :)
Caden's savings account had $ 70 $70dollar sign, 70 in its first year. Each year since then, his account accumulated interest amounting to 10 % 10%10, percent of the balance in the previous year. Let f ( n ) f(n)f, left parenthesis, n, right parenthesis be Caden's account balance at the n th n th n, start superscript, start text, t, h, end text, end superscript year of the saving. f ff is a sequence. What kind of sequence is it? Choose 1 answer: Choose 1 answer: (Choice A) A Arithmetic sequence (Choice B) B Geometric sequence Complete the recursive formula for f ( n ) f(n)f, left parenthesis, n, right parenthesis. f ( 1 ) = f(1)=f, left parenthesis, 1, right parenthesis, equals f ( n ) = f ( n − 1 ) f(n)=f(n−1)f, left parenthesis, n, right parenthesis, equals, f, left parenthesis, n, minus, 1, right parenthesis +/⋅
Answer:
f is a geometric sequence.
f(1)=70
f(n)=f(n−1)⋅1.1
Step-by-step explanation:
hope this helps
please mark me as brainliest!
Figure I and Figure II are similar pentagons. Figure 1 4.2 cm Figure II 4 cm 5.25 cm 6 cm y cm 6 cm 3 cm 3.15 cm 7 cm Which proportion must be true
A Y/X = 4.2/3.15
B 6/X = 5.25/7
C Y/6 = 7/5.25
D X/4 = 3/6
Answer: I believe it’s c because I have that question on my test and c was the correct answer for me sorry if it didn’t work
Step-by-step explanation:
How many ft. Equal 30 in.
Answer:
2.5 ft
Step-by-step explanation:
Answer:
2.5
Step-by-step explanation:
To find how many feet are in inches. You need to find how many inches are in a foot.
12 in.= 1 foot
With this information, you divide the inches by 12.
30/12=2.5Solve for x using the exterior angle theorem.
Answer:
x=9.16666...
Step-by-step explanation:
Find the value of 8... and Brainly apparently has to have at least 20 words for it to b a “question”
Answer:
40,320
Step-by-step explanation:
The ! after the 8 is called a factorial.
You basically have to multiply that number by all the numbers that come before it.
For example: 4! = 4 x 3 x 2 x 1
In your case, 8! = 8 x 7 x 6 x 5 x 4 x 3 x 2 x 1 = 40,320
is 1/14 rounded to 0, 1/2 or 1
Answer:
0
Step-by-step explanation:
Answer: 1/2
Step-by-step explanation: can i have brainlist please
Can someone please answer 19,20,21 please and thank you!!
If Fran were to paint her living room alone, it would take 6 hours. Her sister Denise
could do the job in 8 hours. How long would it take them working together? If needed,
submit your answer as a fraction reduced to lowest terms.
Answer:
It will take Fran and Denise [tex]3\frac{3}{7}[/tex] hours to paint the living room.
Step-by-step explanation:
Given that:
Time taken by Fran to paint living house = 6 hours
Time taken by Denise = 8 hours
Let,
x be the time taken by both of them.
[tex]\frac{1}{Fran's\ share}+\frac{1}{Denise's\ share}=\frac{1}{x}\\\\\frac{1}{6}+\frac{1}{8}=\frac{1}{x}\\\\\frac{4+3}{24}=\frac{1}{x}\\\\\frac{7}{24}=\frac{1}{x}\\\\x = \frac{24}{7}[/tex]
[tex]x = 3\frac{3}{7}[/tex] hours
Hence,
It will take Fran and Denise [tex]3\frac{3}{7}[/tex] hours to paint the living room.
Estimate the answer by rounding each fraction to the nearest whole number and then subtracting.
Answer:
5
Step-by-step explanation:
estimated would be 8 - 3
To solve the problem we must know about fractions.
What is a Fraction?A fraction is a way to describe a part of a whole. such as the fraction [tex]\frac{1}{4}[/tex] can be described as 0.25
What is a Mixed Fraction?A mixed fraction is a fraction that contains a whole number and a fraction whose denominator is greater than the numerator.
The solution to this problem is [tex]5\dfrac{13}{40}[/tex].
Given to us
[tex]8\frac{1}{5}-2\frac{7}{8}[/tex]
Converting the mixed fractions to fraction
[tex]8\dfrac{1}{5}-2\dfrac{7}{8}\\\\=\dfrac{(8 \times 5)+1}{5}-\dfrac{(8\times 2)+7}{8}\\\\=\dfrac{41}{5}-\dfrac{23}{8}\\\\[/tex]
Taking LCM,
[tex]=\dfrac{41\times 8}{5\times 8}-\dfrac{23\times 5}{8\times 5}\\\\=\dfrac{328}{40}-\dfrac{115}{40}\\\\=\dfrac{328-115}{40}\\\\=\dfrac{213}{40}[/tex]
Converting to Mixed Fractions,
[tex]=5\dfrac{13}{40}[/tex]
Hence, the solution to this problem is [tex]5\dfrac{13}{40}[/tex].
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Use Structure The area of a rectangular
playground has been extended on one side.
The total area of the playground, in square
meters, can be written as 352 +22x.
Rewrite the expression to give a possible set
of dimensions for the playground,
Answer:
The width and length of the rectangle are [tex]22[/tex] and [tex]16+x[/tex], for [tex]x > -16[/tex], respectively.
Step-by-step explanation:
From Geometry, we remember that area of the rectangle ([tex]A[/tex]) is defined by:
[tex]A = w\cdot l[/tex] (1)
Where:
[tex]w[/tex] - Width.
[tex]l[/tex] - Length.
In addition, we know that area is described by a first-order polynomial:
[tex]A = 352+22\cdot x[/tex] (2)
Meaning that is the product of another first-order polynomial and a constant. That is:
[tex]A = a\cdot (b+c\cdot x)[/tex] (3)
Now we determine the Great Common Divisor of 352 and 22:
[tex]352 = 2\times 2\times 2 \times 2 \times 2 \times 11[/tex]
[tex]22 = 2\times 11[/tex]
The Great Common Divisor is 22.
Then, the area of the rectangle can be expressed by this expression:
[tex]A = 22\cdot (16+x)[/tex] (3b)
According to this, the width and length of the rectangle are [tex]22[/tex] and [tex]16+x[/tex], for [tex]x > -16[/tex], respectively.
3
Add. Write the expression below in simplest form.
(-2x + 10) + (-8x - 1)
Answer:
The answer is -10x + 9
Step-by-step explanation:
Combine like terms.
-10x + 9
Hoped this helped!
Could I get brainly?
PLEASE HELP :(
Solve a system of equations using substitution.
6x - 2y = 10
2x + 3y = 51
Solving the first equation above for y gives:
y = __ x - 5
Answer:
y=3x-5
Step-by-step explanation:
took the test yesterday and got it right
Review the proof.
Which expression will complete step 3 in the proof?
How can I complete step 3 in proof and review it what is step 3
If 10% of a number is 44, 5% of the number is
Answer:
22
Step-by-step explanation:
I hope this helps <3
If a = -4, then what is the value of -a?
OA.
5
OB.
4
OC. 0
OD
D. -4
A pizzeria sold $3,432 worth of pizzas this week. Each pizza costs $12. How many pizzas were sold?
Answer:
286
Step-by-step explanation:
its 286 that's the answer
Pleaseee help pronto ......
Answer:
C
Step-by-step explanation:
you can see the proportion is right because you get 5 cucumbers for 2 dollars. for double cucumbers times by two which equals 4 dollars. Times 5 by three because it's 3 times bigger meaning it has to equal 6 dollars and finally times 2 by 4 making 20 cucumbers cost 8 dollars.
Please Help!
I'm in a hurry!
Answer:
-2 due to the y axis having the line run through the -2
Answer:
Y-intercept is -2. Equation is y=1x-2
Step-by-step explanation:
#NotATest.
You probably don't want an explanation.
The y-intercept is -2 because that is where the line meets the y-axis.
The slope is 1 because the line is going up 1 unit, and over 1 every time.
The last part is -2 because that is the y-intercept.
Hope this helps!
can someone please help me asap
Answer:
c= 70?
a= 66? I think im not too sure
Which rational number is one tick mark to the right of Negative StartFraction 6 Over 4 EndFraction on the number line below?
Answer:
the answered is a
Step-by-step explanation:
hope this helps
Answer:
-1 3/4
Step-by-step explanation:
SOLVE FOR X, WILL GIVE BRAINLIEST
-- these are called same side interior angles, which are supplementary.
to solve for x:
3x + 37 + 2x - 7 = 180
5x + 30 = 180
5x = 150
x = 30
Answer: x = 30
========================================================
Explanation:
These angles shown are same side interior angles.
Due to the parallel lines, same side interior angles are always supplementary.
This means they add to 180
(2x-7)+(3x+37) = 180
2x-7+3x+37 = 180
(2x+3x)+(-7+37) = 180
5x+30 = 180
5x = 180-30 .... subtracting 30 from both sides
5x = 150
x = 150/5 ... dividing both sides by 5
x = 30
What's equivalent to 2/5?
Answer: 4/10 , 6/15, 8/20,
Step-by-step explanation:
Answer: Equivalent fractions of 2/5 : 4/10 , 6/15 , 8/20 , 10/ Equivalent fractions of 3/5 : 6/10 , 9/15 , 12/20 , 15/
Step-by-step explanation:
3/5-x/9=2/15-2x/45 can someone help I don’t understand
Which Expression represents 8 less than 3 times?
Answer:
3x-8
Step-by-step explanation:
if 8 less than something it means subtract, example:
8 less than 21 = 13
and plus u said 3 times x and when multiplying by a variable(letter) you can put them together, example:
3 times x = 3x
The given statement can be written as expression as -
f(x) = 3x - 8
What is a expression? What is a mathematical equation? What do you mean by domain and range of a function?A mathematical expression is made up of terms (constants and variables) separated by mathematical operators.A mathematical equation is used to equate two expressions.Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.For any function y = f(x), Domain is the set of all possible values of [y] that exists for different values of [x]. Range is the set of all values of [x] for which [y] exists.
Given is the statement -
8 less than 3 times
We have -
Assume the number to be [x]. Then -
f(x) = 3x - 8
Therefore, the given statement can be written as expression as -
f(x) = 3x - 8
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