Answer:
B
Step-by-step explanation:
Mathematically, we shall be using the z-score here
Z-score = (x-mean)/SD
From the question, mean = 80 and SD = 4
So we want to get the option in the question that has a z-score of 1 or below
Let’s look at 75
80-75 = 5 ( this is clearly above 1 standard deviation of 4)
For 77;
80 -77 = 3
This is less than the standard deviation of 4, meaning it is within 1 standard deviation of the mean
Option B) is correct.
Step-by-step explanation:
Given :
Mean [tex](\mu)[/tex] = 80
Standard Deviation [tex](\sigma)[/tex] = 4
Calculation :
We have to find the score that would be 1 deviation from the mean. Which means, the interval [tex](\mu-\sigma, \mu+\sigma)[/tex]
[tex]\mu-\sigma = 80-4=76[/tex]
[tex]\mu+\sigma =80+4=84[/tex]
The interval is (76,84)
Therefore, option B) is correct.
For more information, refer the link given below
https://brainly.com/question/23907081?referrer=searchResults
Need helppp2/3 (18a - 11) = 1/3 (a + 13)
Answer: a = 1
its mostly combing, dividing and distributing.
Answer:
the answer is a = 1
Step-by-step explanation:
combine a and 18a and combine 11 and 13
divide and distribute the numbers and then you get your answer
this was kinda and easy problem
find the area of the figure above
The area of the shape that is the combination of rectangle and trapezoid will be 71 square inches.
What is the area?The quantity area demonstrates the amount of a sector on a planar or hemispherical cup. Surface area refers to the area of an open surface or the border of a multi-object, whereas the area of a plane region or plane field refers to the area of a form or planar material.
The shape is a combination of a rectangle and a trapezoid.
The area is the summation of the area of the rectangle and the area of the trapezoid. Then we have
Area = Area of the rectangle + Area of the trapezoid
Area = 5 x 9 + (1/2) x (4 + 9) x 4
Area = 45 + 26
Area = 71 square inches
The area of the shape that is the combination of rectangle and trapezoid will be 71 square inches.
More about the area link is given below.
https://brainly.com/question/27683633
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The missing graph is given below.
11. A grocery store flyer this week included the sale price information shown below.
Sale Prices
Item
Price
Red Grapes
5 lbs for $5.50
Soft Drink 12-packs 3 for $9.99
Snack Mix Bag $1.50 each
Lunchmeat package $4.25 each
Susan needs to buy 5 lbs of grapes, six 12-packs of soft drinks, and 3 packages of
lunchmeat. How much will Susan spend on her items, not including tax?
Simplify the following expressions:
x−(x−14)
thanks this should be easy I'm just working on other problems right now and don't want to deal with it
Answer:
x-(x-14)
Distribute negative one by everything in the parentheses
and you will get x=14
Step-by-step explanation:
Is d=(10)+(-20) d=10)(5 d=(-35)+(
Answer:
d=7
Step-by-step explanation:
Mr. Wong wants to purchase 12 new smoke detectors for his house. Store A sells each smoke detector for $17 and Store B sells each smoke detector for $24. If Mr. Wong purchases all his smoke detectors at Store A, how much less will he spend than if he purchased all the smoke detectors at Store B?
Answer:
$84
Step-by-step explanation:
so for store A, you would do $17*12 smoke detectors, Which would give you $204. For store B you would do $24*12 smoke detectors. That is $288. Now all you do is 288-204=84. You would save $84 dollars going to store A
An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
The amount less spend by buying in store A than in store B is $84
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
The number of smoke detectors to be purchased.
= 12
Store A:
Cost of one smoke detector = $17
Cost of 12 smoke detectors.
= 12 x 17
= $204
Store B:
Cost of one smoke detector = $24
Cost of 12 smoke detectors.
= 12 x 24
= $288
Now,
The difference between the cost of 12 smoke detectors from store A to store B.
= $288 - $204
= $84
Thus,
The amount less spend by buying in store A than in store B is $84
Learn more about expressions here:
https://brainly.com/question/3118662
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these are 3 different questions. if you answer can u explain so it can help me please.
Answer:
ans of problem 12 is:
x=65
y=10
Answer:
Step-by-step explanation:
Problem 12:
I think that (2x-y)+60=(2x+y)+40
Because of the Alternate Interior Angles theorem, which places the 40 next to (2x+y) so then you know they are a linear pair. Same can be done for the side with the 60 degree angle. So both sides add up to 180 so they are congruent themselves and you can put them in this format:
(2x-y)+60=(2x+y)+40
-40 -40
We do this to remove the 40 from the right side completely, and whatever you do to one side of the equation you have to do to the other as well so remove 40 from both.
(2x-y)+20=(2x+y)
-2x -2x
Again, we are just trying to find out y right now
-y +20=y
+y +y
20 = 2y
10 = y
Then insert the y into an equation telling us that it is equal to 180 (because we know that from before) to get what x is
(2x-y)+60=180
We can also input our y that we found out was 10 from before:
(2x-10)+60=180
And now we can add up 60 and -10
2x+50=180
Now subtract 50 to both sides
2x=130
And divide both sides by 2
x=75
So x=75 and y=10
Feel free to ask any questions
Problem 13:
The same type of working out, just with different numbers
Four times Theo’s number added 20 is 10. what is theo’s number ?
Answer:
ur mom
Step-by-step explanation:
genehrrddjdhxxhdhdi hope this didnt help
8x-4 can you guys help me solve for x
Answer:-32
Step-by-step explanation:
8x4=32 add a negative sign
need answers quick please!!
Answer:
1. X=3/a
2. x=-6/a
3. x=-a/6
Solve 3/5 + 2/5 write The answer in simplest form HURRY PLEASE
Answer:
Your answer is 1
Step-by-step explanation:
a.
The expression V18+ V8 is equivalent to
572
b. 1072
2V9
d. 26
c.
b
The answer is A :)
factorise x2-10x-24 plz help
Answer:
(х-4)(х-6)
Step-by-step explanation:
х¹= 4
х²=6
easy
Answer:
(x - 12)(x + 2)
Step-by-step explanation:
Given
x² - 10x - 24
Consider the factors of the constant term (- 24) which sum to give the coefficient of the x- term (- 10)
The factors are - 12 and + 2 , since
- 12 × + 2 = - 24 and - 12 + 2 = - 10 , thus
x² - 10x - 24 = (x - 12)(x + 2) ← in factored form
What is the answer to 24x + 2y =48 for x
−7+3(−4e−3) equivalent expression
Find the sum.
(8x^4+2x^2−1) + (3x^3−5x^2+7x+1)
Answer: 8x⁴ + 3x³ -3x² + 7x
Answer: 8x^4+3x^3-3x^2+7x
Step-by-step explanation: just simplify the equation
HELP URGENT GEOMETRY
Which is an equivalent form of the following equation?
2x – 3y = 3
Answer:
y=2/3x - 1
Step-by-step explanation:
2x-3y=3
-2x -2x
-3y= -2x + 3
÷-3 ÷-3 ÷-3
y= -2/3 x - 1
Deposit $125 in your checking account
Answer:
??
Step-by-step explanation:
Answer:
You are adding $125 into your checking account.
Step-by-step explanation:
Find the percent of decrease. Round to the nearest whole percent.
old: 374 boxes; new: 130 boxes
Answer:
B
Step-by-step explanation:
A carpenter wants to cut a board that is five sixth ft long into pieces that are five sixteenths ft long. The carpenter will use the expression shown to calculate the number of pieces that can be cut from the board. five sixth divided by five sixteenths. Which expression can also be used to calculate the number of pieces that can be cut from the board?
Answer:
N = L/P
8/3 pieces
Step-by-step explanation:
Length of the board = 5/6 ft
A carpenter wants to cut a board that is five sixth ft long into pieces that are five sixteenths ft long.
Length of each piece = 5/16 ft
Number of pieces that can be cut from the board = Total length of board / length of each piece
Let
N = Number of pieces that can be cut from the board
L = Total length of board
P = length of each piece
N = L / P
= 5/6 ÷ 5/16
= 5 / 6 × 16 / 5
= 80 / 30
= 8/3
The number of pieces that can be cut from the board is 8/3
Write 57,800,000 in scientific notation.
How many angles are there?
Answer:
There are 7 angles.
Step-by-step explanation:
Given m∥n .
What theorem or postulate justifies this statement?
∠4≅∠6
alternate interior angles theorem
alternate exterior angles theorem
corresponding angles postulate
vertical angles theorem
linear pair postulate
Answer: heres the answer for future people lel
The theorem that justifies this statement ∠4≅∠6 is; Alternate Interior Angles.
What are Alternate Interior angles?When two parallel lines are crossed by a transversal line, the pair of angles formed on the inner side of the parallel lines, but on the opposite sides of the transversal are called alternate interior angles. These alternate interior angles are always equal.
From the given diagram, we see that ∠4 and ∠6 fall into the category of alternate interior angles.
Read more about Alternate Interior angles at; https://brainly.com/question/24839702
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Anybody wanna help?please
Answer:
ilysm sm
Step-by-step explanation:
I hope u get the answer I need points IM SO SORRY
what are warnings sopposed to mean on here????
and guess how many i have and tell me urs
Answer:
basically, if you do something against guidelines, you get a warning.
Step-by-step explanation:
id say you have 1, i have 0 lolol
Answer:
They mean that you posted unrealated things and if you do more times something will happen like you will get band i guess i have 0
Step-by-step explanation:
LOTS OF POINTS
Find the Perimeter of the figure below, composed of a parallelogram and one semicircle. Rounded to the nearest tenths place
please don't answer if you are wrong
Answer:
38.3
Step-by-step explanation:
The perimeter of the figure can be broken down into the perimeter of 3 sides of the parallelogram, and the perimeter of the semicircle (without its diameter).
The three sides of the parallelogram would be 14+14+4=32.
The perimeter of the semicircle would be 1/2*diameter*pi, which is about 1/2*4*3.14=6.28.
Therefore, the perimeter is 32+6.28=38.3 (to the nearest tenths).
1/2n+3=6 solve for n
Answer:
i think this is your ans
mark as brainliest
plezzz.....
Answer:
If you meant (1/2)*n+3=6, n=6. If you meant 1/(2*n)+3=6, n=1/3.
P.s.
Please give me brainliest for my next rank
Help with math...i will give brainlys
Keep this for future reference.
Answer:
1a. corresponding angles
1b. alternate exterior angles
1c. same side interior angles
2. it is simple, solve for x just like in Algebra, x=9
4x+2=7x-25
4x+27=7x
27=3x
9=x
Step-by-step explanation:
0.6x + 3 = 0.1x - 7 what value of x makes the question true
Answer:x=-20
Step-by-step explanation:
