The mean weight of five complete computer stations is 167.2 pounds. The weights of four of the computer stations are 158.4 pounds, 162.8 pounds, 165 pounds, and 178.2 pounds respectively. What is the fifth computer station?
The mean weight of five complete computer stations is 167.2 pounds.
The weights of four of the computer stations are 158.4 pounds, 162.8 pounds, 165 pounds, and 178.2 pounds.
We have to determine the weight of fifth computer station.
Let the weight of fifth computer station be 'x' pounds.
Mean is calculated by sum of all the observations divided by the total number of observations.
So, [tex] \frac{158.4+162.8+165+178.2+x}{5}=167.2 [/tex]
[tex] \frac{664.4+x}{5}=167.2 [/tex]
[tex] {664.4+x}=167.2 \times 5 [/tex]
[tex] {664.4+x}=836 [/tex]
x= 171.6 pounds
The weight of fifth computer station is 171.6 pounds.
To find the weight of the fifth computer station, subtract the sum of the weights of the four given stations from the mean weight.
Explanation:The mean weight of five complete computer stations is 167.2 pounds. To find the weight of the fifth computer station, we can calculate the sum of the weights of all five stations and then subtract the sum of the weights of the four given stations. The weight of the fifth station can be found by subtracting the sum of the weights of the four given stations from the mean weight.
Sum of the weights of all five stations = 5 * 167.2 pounds
Sum of the weights of the four given stations = 158.4 pounds + 162.8 pounds + 165 pounds + 178.2 pounds
Weight of the fifth station = Sum of the weights of all five stations - Sum of the weights of the four given stations
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Lines AB and CD are parallel. If the measure of W equals 129°, what is the measure of X?
Find two numbers, if
Their sum is 3/5 and their difference is 7 1/5
Answer:
3.9 and -3.3
Step-by-step explanation:
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(x+10)+(3x+2)=180
What is x
if f(x)=5x-1 thenF-1(x)
Which equation finds the value of x in the triangle below?
1) cot 70=x/12
Cot 70=[opposite side]/[adyacent side]=x/12
The option 1 is correct
2) cot 70=12/x
Cot 70=[opposite side]/[adyacent side]=x/12
The option 2 is not correct
3)sec 20=x/12
Sec 20 =1/cos20
Cos 20==[opposite side]/[hypotenuse]=12/z
1/(1/cos20)-------> 1/(12/z)------> z/12
The option 3 is not correct
4) sec 20=12/x
Sec 20 =1/cos20
Cos 20==[opposite side]/[hypotenuse]=12/z
1/(1/cos20)-------> 1/(12/z)------> z/12
The option 4 is not correct
Answer:
A: cot 70 degrees = x/12
Step-by-step explanation:
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this is a system of equation word problem
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n quadrilateral LMNO, LO ∥ MN. What additional information would be sufficient, along with the given, to conclude that LMNO is a parallelogram? Check all that apply. ML ∥ NO ML ⊥ LO LO ≅ MN ML ≅ LO MN ⊥ NO
Answer: The correct options are
(A) ML ∥ NO,
(C) LO ≅ MN.
Step-by-step explanation: Given that in quadrilateral LMNO, LO ∥ MN.
We are to select the correct additional information that would be sufficient along with the given information to conclude that LMNO is a parallelogram.
PARALLELOGRAM: A parallelogram is a quadrilateral if ine of the following conditions are satisfied:
(i) Two pairs of opposite sides parallel
or
(ii) one pair of opposite sides parallel and congruent.
The given condition is
LO ∥ MN.
So, the other additional sufficient condition will be
either the other pair of opposite sides parallel, i.e., ML ∥ NO,
or
the same pair of parallel sides are congruent, i.e, LO ≅ MN.
Thus, the correct statements are ML ∥ NO and LO ≅ MN.
Option (A) and (C) are correct.
Answer:
a and c
Step-by-step explanation:
There are 18 animals and 40 legs in all so lets see how many cows could be born. 4,8,16,12,24,28,32,36,40. so there could be 9 cows and now lets see on chickens 2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40. so the could be 20 chickens so if u think. i think the ancewer is 30 chickens and 10 cowws thx!!!!
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Two florist purchased flower bouquets and vases at the same store. The first florist bought 2 flower bouquets and 2 vases for a total of $12.50. The second florist bought 8 flower bouquets and 2 vases for a total of $29.00.
Let b represent the cost of one flower bouquet and v represent the cost of one vase. Write AND SOLVE a system of equations to find the price of each type of arrangement. SHOW ALL WORK!
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Identify the GCF of 10x4y3 − 5x3y2 + 20x2y.
10x2y
10x3y
5x2
5x2y
The GCF of the given expression is:
[tex]5x^2y[/tex]
Step-by-step explanation:The GCF ( greatest common factor ) is the greatest divisor which divides all the terms completely.
Here we have the expression as:
[tex]10x^4y^3-5x^3y^2+20x^2y[/tex]
Here we see that the factors of the first term are:
[tex]10x^4y^3=2\times 5\times x\times x\times x\times x\times y\times y\times y[/tex]
The factor of the second term is:
[tex]-5x^3y^2=-1\times 5\times x\times x\times x\times y\times y[/tex]
and the factor of the third term is:
[tex]20x^2y=2\times 2\times 5\times x\times x\times y[/tex]
i.e. the factor which is common to all the three terms are:
[tex]5\times x\times x\times y=5x^2y[/tex]
Hence, the GCF is: [tex]5x^2y[/tex]
Help please been stuck on this for a week.
Evaluate the expession. x=12, y=8, z=3 4x-yz
The value of the given expression is 24.
The given expression is 4x-yz.
What is an expression?An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.
Put, x=12, y=8 and z=3 in the given expression, we get
4x-yz = 4×12 - 8×3
= 48 - 24
= 24
Therefore, the value of the given expression is 24.
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A bakery bakes 10 cakes per hour & had 3 from the day before. What equation represents this?
A.y = 10x + 3
B.y = 3x + 10
C.y = x + 13
D.y = 13x
Trey wants to plant grass in his backyard. His backyard is in the shape of a rectangle. Its length is 31
feet and its width is 24
feet. Suppose each pack of seed covers 12
square feet. How many packs of seed will he need to cover the backyard?
The first step to solve this problem is to compute for the area of the rectangular backyard. The formula in computing the area of a rectangle is:
A = LW
Substituting the given measurement to the formula:
A = 31 (24)
A = 744 square feet
The area of the backyard is 744 square feet.
Since each pack of seed covers 12 square feet, you need to divide this to the total area of the backyard.
Therefore, you need 62 (744 / 12) packs of seed to cover the backyard.
Trey will need 62 packs of seed to cover his backyard.
Explanation:To find the number of packs of seed Trey will need to cover his backyard, we need to calculate the total area of the backyard and then divide it by the area covered by each pack of seed.
The formula to find the area of a rectangle is length x width. For Trey's backyard, the length is 31 feet and the width is 24 feet, so the area is 31 x 24 = 744 square feet.
Each pack of seed covers 12 square feet, so we divide the total area of the backyard by the area covered by each pack of seed: 744 / 12 = 62 packs of seed.
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Which of the following is the image of A after a rotation of -90° about the origin?
(0, -2)
(0, 2)
(-2, 0)
Answer:
Option A. (0, -2)
Step-by-step explanation:
In the given graph coordinates of point A are (2, 0).
Now this point is rotated by -90° about the origin, that means rotation has been done clockwise by 90°.
Now after rotation this point A will lie on the negative side of the y-axis and the new coordinates become (0, -2).
Therefore, option A. (0, -2) is the correct option.
Emily’s pet snake is 5 feet long. Kristen’s snake is 50 inches long. Kristen says her snake is much longer because 50 is so much bigger than 5. Is Kristen right? Why or why not?
Which function has a domain of all real numbers except x=π/2 ±nπ?
A. y=secx
B. y=cosx
C. y=1/sinx
D. y=cotx,
Answer:
y=cos x
Step-by-step explanation:
A P E X
Given f(x) =10x-2x find f(7)
A high school student working part-time as a pizza delivery man had a gross income of 6324 last year. If his federal tax rate was 10% and his state tax rate was 4.2% what was the amount withheld from his pay last year in fenderal tax, state tax, and FICA combined
Answer:
$1381.79 withheld from his pay last year.
Step-by-step explanation:
A student working as a pizza delivery man and earned = $6324.00
first we calculate all the taxes at the given tax rates
Federal Tax Rate = 10% of 6324.00
= 0.10 × 6324 = $632.40
State Tax Rate = 4.2% of 6324.00
= 0.042 × 6324 = $265.608
FICA is comprised of taxes for social security and medicare. For social security tax rate is 6.2% and for medicare tax rate is 1.45% which add up to 7.65%.
FICA combined Tax Rate = 7.65% of 6324.00
= 0.0765 × 6324 = $483.786
Now we add all the taxes to get what amount withheld from his pay
= 632.40 + 265.608 + 483.786 = $1381.79
$1381.79 withheld from his pay last year.
How to find the equation of a circle
Final answer:
To find the equation of a circle, use the formula (x - h)² + (y - k)² = r², where (h,k) is the center of the circle and r is its radius. You apply this knowledge to other circular calculations, such as the angular velocity or the position and velocity of a moving point on the perimeter of the circle.
Explanation:
Finding the Equation of a Circle
To find the equation of a circle, you need to know the circle's radius (r) and the coordinates of its center (h,k). The general form of the equation is (x - h)² + (y - k)² = r². The values of h and k are the x and y coordinates of the center of the circle, respectively. If you recall the formula for the circumference of a circle, which is 2πr, and the area, which is πr², you can see that these both incorporate the radius of the circle in their calculations, similar to how the radius is used in the equation of the circle. When given certain dimensions or related motion problems, you can substitute known values into the equation to solve for the unknowns.
For example, if a circle has a radius of 5 units and its center is at the point (3,4), the equation would be (x - 3)² + (y - 4)² = 25. To find equations related to circular motion, like in the scenario of a student on a merry-go-round, knowing the radius also allows for determining the angular velocity and the velocity of a shadow or any point moving in circular motion.
what’s the inverse of y=4x^2-2
Which expression shows a sum of three terms? (1 point)
3x
3 + x
x^3
x + 3 + x
Answer:
x + 3 + x
Step-by-step explanation:
3x :
This is a product of two terms, where x is any variable.
3 + x :
This is sum of two terms,where x is any variable.
x^3 :
This expresses x to the power of three. It can also be written as (x times x times x ). Thus it is the product of three terms, where x is any variable.
x + 3 + x :
This is the sum of three terms, where x is any variable.
Thus answer is x + 3 + x
39 is 75% of what number
Complete the synthetic division problem below. What is the quotient in polynomial form?
Tim predicts he will get 98 points on the next exam. If Tim actually earned 62 points, what was Tim's percent error? Round your answer to the nearest tenth of a percent.
Answer: 58.1
Step-by-step explanation:
98 - 62 / 62 = rounds to 58.1 Thank me Later..
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