Answer:
Step-by-step explanation:
let the sam's age be x
2x+5=3x-1
5+1=3x-2x
6=x
therefore sam's age is 6.
Answer:
6
Step-by-step explanation:
let age be = to x
2x + 5 = 3x - 1
-x = -6
x = 6
find the mean and the median of the following data
number 1: 7, 6, 8, 12 ,15 ,7
number 2: 15 ,200 ,100, 130, 7
number 3: 60, 19, 12, 2 ,7 ,9
Answer:
Hope this helped! <3
Step-by-step explanation:
the median for number 1 is: 7.5 and the mean is 9.16667
the median for number 2 is: 100 and the mean is 90.4
the median for number 3 is: 10.5 and the mean is 18.16667
Answer:
Hi!
number 1: median: 8, 12 or 10
number 2: median: 100
number 3: median: 12, 2 or 7
number 1: mean: 9.16
number 2: mean: 90.4
number 3: mean: 18.16
Step-by-step explanation:
The mean is just all the numbers added up in a data set divided by how many numbers are in the data set. That gets you the average
The median is just the number in the middle of the data set.
Also for the first the median is either 10 or both 8 and 12 Because there's not 1 number in the middle it can be 8 and 12 of you want it averaged them it would be 10 I dont know which you want so you would have to figure that out
same with number 3
Also for the means it might vary depending if you need to round or not
Round 122.1587 to the nearest hundredth?
Answer:
100
Step-by-step explanation:
H T U
1 2 2
2 is a num below 5 therefore
2=0
HELP ILL GIVE BRAINLIEST
Answer:
1
Step-by-step explanation:
m= y/x =5/5= 1
__________
Please solve with explanation
Answer:
Rewrite the equation as 28a^4+ma^3−19a^2−2a+3=(7a^2+2a−3)(4a^2−1).
28a^4+ma^3−19a^2−2a+3=(7a^2+2a−3)(4a^2−1)
Simplify (7a^2+2a−3)(4a^2−1).
28a^4+ma^3−19a^2−2a+3=28a^4−19a^2+8a^3−2a+3
Move all terms not containing m to the right side of the equation.
ma^3=8a^3
Divide each term by a3 and simplify.
m=8
Step-by-step explanation:
Hope to help you
what is organ system???
Answer:
An organ system is a group of organs that work together to perform one or more functions. Each organ has a specialized role in a plant or animal body, and is made up of distinct tissues.
#Carry on learning
#mark a brainlies
[tex] - heaven[/tex]
Please answer question :) need help
Answer:
C. 1/3
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightStep-by-step explanation:
Step 1: Define
Identify
a = 2/3
b = 3/4
c = 1/2
a(b - c²)
Step 2: Evaluate
Substitute in variables: 2/3[3/4 - (1/2)²][Brackets] Exponents: 2/3(3/4 - 1/4)(Parenthesis) Subtract: 2/3(1/2)Multiply: 1/3Answer:
C. 1/3
Step-by-step explanation:
Replace each letter with their corresponding value and simplify using the order of operations:
a(b - c*c)
turns into:
[tex]\frac{2}{3} (\frac{3}{4}-(\frac{1}{2}*\frac{1}{2}))[/tex]
You want to remember that order of operations follows the rules of PEMDAS. The operations within the parentheses come first.
1/2 times 1/2 = 1/4
Now we have:
[tex]\frac{2}{3}(\frac{3}{4}-\frac{1}{4})[/tex]
Then 3/4 - 1/4 = 2/4 = 1/2
[tex]\frac{2}{3}(\frac{1}{2})[/tex] = 1/3
Therefore your answer is C. 1/3
What is the value of x in the figure?
A. 40
B. 70
C. 80
D. 120
E. 150
Answer:
E) 150°
Step-by-step explanation:
angle adjacent to 70° angle is 110°
the angle supplemental to 'x' must be 180-(40+110) or 30°
this means 'x' must be 150°
33/23 as a decimal rounded to the nearest tenth?
Answer:
1.4
Step-by-step explanation:
33/23 = 1.434 ≈ 1.4 (rounded to the nearest tenth)
The answer is 1.43
What is a improper fraction?An improper fraction is a fraction where the numerator is greater than or equal to the denominator. For example, 3/2 is an improper fraction, but 2/3 is a proper fraction, whose denominator is greater than the numerator.
Given here: The fraction 33/23 which is roughly equivalent to 1.43
We know, To convert a decimal to a fraction, place the decimal number over its place value. For example, in 0.6, the six is in the tenths place, so we place 6 over 10 to create the equivalent fraction, 6/10. If needed, simplify the fraction. And To convert a fraction to a decimal, we'll just divide the numerator...by the denominator.
Thus 1.43=33/23
Hence, The answer is 1.43
Learn more about fractions here:
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If tests are worth 60% of your grade, and you have a 76.8% in that class, and you fail that test, what will be your grade?
Answer:
70
Step-by-step explanation:
it depends on the grade you make, so if you were to make a 65.47, your grade would be a 70, so any grade less than 70 should be the answer, hope this helps!
please help!! I'm stuck on this
Answer:
D
Step-by-step explanation:
According to the volume formula, you multiply length x width x height
Answer:
D; 1*9*4
Step-by-step explanation:
Since the formula for the volume of a rectangular prisim is L*W*H (length times width times height), it would be 9*4*1. However, since the order doesn't matter (due to the commutative property of multiplication) it would be D.
This question is about two positive numbers. Here are facts about these numbers:The numbers are consecutive even integers.The sum of the numbers is 38.
Now that we’ve learned how to solve word problems involving the sum of consecutive integers, let’s narrow it down and this time, focus on word problems that only involve finding the sum of consecutive even integers.
But before we start delving into word problems, it’s important that we have a good understanding of what even integers, as well as consecutive even integers, are.
Even Integers
We know that even numbers are integers that can be divided exactly or evenly by 22. Thus, the general form of the even integer nn, is n = 2kn=2k, where kk is also an integer.
In other words, since even numbers are the multiples of 22, we can represent an even integer nn by 2k2k, where kk is also an integer. So if we have the even integers 1010 and 1616,
Answer:
18 and 20
Step-by-step explanation:
x + x + 2 = 38
2x + 2 = 38
2x = 36
x = 18
x+2 = 20
what is the square root of 25??
Answer:
The square root of 25 is 5 because 5 times 5 is 25
Step-by-step explanation:
a man has been driving a second hand car for the past four years. over these four years he managed to save 16% as a deposit of the price of the brand new car he wants to buy. the price of the new car is 750 000... calculate the amount he saved for the deposit
Answer:
$120,000
Step-by-step explanation:
Provided that
The price of the new car is $750,000
And, the saving percent is 16%
We need to calculate out the saving amount for the deposit
Therefore, the saving amount is
= $750,000 × 16%
= $120,000
Basically we multiply these two things to each other in order to get the saving amount
At a customer service call center for a large company, the number of calls received per hour is normally distributed with a mean of 130 calls and a standard deviation of 10 calls. What is the probability that during a given hour of the day there will be less than 129 calls, to the nearest thousandth?
Answer:
0.460
Step-by-step explanation:
We solve using z score formula
z = (x-μ)/σ, where
x is the raw score = 129 calls
μ is the population mean = 130 calls
σ is the population standard deviation = 10 calls
Hence:
Z score = x - μ/σ
=129 - 130/10
=-0.1
Probability value from Z-Table:
For x less than 129 calls = x < 129
P(x<129) = 0.46017
Approximately to the nearest thousandth = 0.460
Therefore, the probability that during a given hour of the day there will be less than 129 calls, to the nearest thousandths is 0.460
Ty
4
3
2
+
5-3-2-1
1
2
3
4
S
X
ما 3
S
S
4
3
Answer:
69
Step-by-step explanation:
69
Find the multiplicative inverse of -1 x -2/5
Answer:
Step-by-step explanation:
For the multiplicative inverse of a real number, divide 1 by the number. For example, the reciprocal of 5 is one fifth (1/5 or 0.2), and the reciprocal of 0.25 is 1 divided by 0.25, or 4.
For more help visit:
https://byjus.com/maths/multiplicative-inverse/
the denominator of a rational number is greater then it's numerator is increased by 11 and the denominator is decreased by 1, the new number becomes 7/3. find the rational number.
Answer:
7/3
7 is increased by 11 so you decrease it by 11
7-11= -4
3 is decreased by 1 so you increase it by 1
3+1= 4
-4/4
help me plzz i give you a barinlist
Answer:
The missing point is (3, -6)
Step-by-step explanation:
8. Paper is sold in packages of different sizes. Which package
has the lowest cost per sheet?
A $1.00 for 150 sheets
b $1.20 for 200 sheets
C $2.50 for 500 sheets
D$5.50 for 1000 sheets
Answer:
C)
Step-by-step explanation:
D) = 0.0055
C) = 0.005
B) = 0.0075
A) = 0.006666667
Please hurry i need help and im stuck!!! helpsosososos
Answer:
2
Step-by-step explanation:
the x and y are being multiplied by 2 e.g. 1 × 2 is 2 and 2 × 2 is 4 so the constant is 2
Answer:
2
Step-by-step explanation:
y2-y1 4-2 2
-------- = --------- = ---------- = 2
x2-x1 2-1 1
which one is it? please help
If a bank offers a loan with 4.8% interest, What is the interest rate as a decimal?
Answer:
22,535.72
Step-by-step explanation:
An experiment observing the growth of two germ strand populations finds these patterns.
• The population of the first germ is represented by the function A(t) = (1-3)*+8.
• The population of the second germ is represented by the function B(x) = (1.3)+2+1.
Which function best represents function R, the ratio of the population of the second germ to the population of the first germ?
OB. R(5)
OA. R(3) = (1.3)65 +10
(2.6)85-8
oc R(x) = (1.3)31–0
OD. R() = (2.6)4+2+
Answer:
[tex]R(x) = (1.3)^{3x-8}[/tex]
Step-by-step explanation:
Given
[tex]A(x) = (1.3)^{x + 9}[/tex]
[tex]B(x) = (1.3)^{4x + 1}[/tex]
Required
Ratio B(x) to A(x)
This is calculated as:
[tex]R(x) = B(x) : A(x)[/tex]
Express as fraction
[tex]R(x) = \frac{B(x) }{A(x)}[/tex]
Substitute: [tex]A(x) = (1.3)^{x + 9}[/tex] and [tex]B(x) = (1.3)^{4x + 1}[/tex]
[tex]R(x) = \frac{(1.3)^{4x+1}}{(1.3)^{x+9}}[/tex]
Apply law of indices
[tex]R(x) = (1.3)^{4x-x+1-9}[/tex]
[tex]R(x) = (1.3)^{3x-8}[/tex]
The width of a rectangle is its length. The perimeter of the rectangle is 420 ft.
What is the length, in feet, of the rectangle?
Width=length
Let's assign a variable for the width, and call it x.
Since the width is equal to it's length, we can also call the length x.
The perimeter formula for a rectangle is 2(l+w).
Hope this helps!
Answer:
[tex]105ft[/tex]
Step-by-step explanation:
Since it's saying that the width of a rectangle is its length, that means all the sides of the rectangle are equal.
Since a rectangle has only 4 sides, we can divide the perimeter of the rectangle (420 ft) by 4 (sides)
Note: perimeter is the sum of all sides!
420 ÷ 4 = 105
Hope this helps!
1. Factory in Wichita
The cost per unit for Wichita’s factory is graphed as a piecewise function over the domain [0, 35000]. a. Write one or two sentences to describe the cost function for the Wichita factory. (5 points) b. Write the piecewise function for the cost per unit for production of units in the Wichita factory. That is, state the function (), where is the number of units produced. (10 points) c. What is the cost per unit for 35,000 units? (5 points) d. According to the graph, if only one unit was produced, the cost per unit would be $1.00. In reality, the company would not call in its worker and start up the equipment to produce one unit. What safeguard do you think that many manufacturers use to avoid this type of problem? (5 points) e. Of the following three statements, choose the best option and write a viable argument showing how it is reflected by the Cost Function for Wichita’s factory. (10 points) ___ The electricity contract with the utility company is structured so that higher daily energy usage is charged at a lower rate.___ The plant’s production processes are performed primarily by robots that are able to work longer hours, when needed, at no additional cost.
___Overtime wages were required to produce at levels above 25,000 units.
2. Factory in Seattle Seattle’s factory is the company’s newest. It was constructed with sustainable building techniques and materials, so its cost structure has been affected in several ways. The Seattle plant uses a mix of solar power (not very reliable with so many clouds), thermal power, and wind. It has an array of batteries, so at the beginning of each production day, there is “free” stored energy that can produce up to 8,000 units. Of course, energy is just one factor of the cost of production, but it is significant.
The cost function for the Seattle factory is given by the following piecewise function. That is, ()is the cost function, where is the number of units produced. The plant’s maximum capacity is 42,000 units
per day.
() = { 0.35 ≤ 8,000
0.75 8,000 < ≤ 20,000
0.83 − ( 200,000) 20,000 < ≤ 42,000
a. Sketch a graph to model Seattle’s cost structure over the domain [0, 42000]. Be sure to label the axes and any endpoints where the graph breaks. (5 points)
b. Describe the function over each part of its domain. State whether it is constant, increasing, or decreasing, and state the slope over each part. (5 points)
3. Factory in Omaha Omaha’s factory has yet another type of cost structure. Its cost function is provided graphically. Its maximum capacity is 38,000 units per day.
a. At what rate is the cost per unit decreasing for production levels above 12,000?(5 points) b. State the function for the domain over [12000, 38000]. (10 points)
c. What is the cost per unit at the production level of 19,000? (5 points)
Omaha’s city council approved a special growth incentive that decreases the company’s tax burden for production levels above last year’s average. Explain how this is reflected by the Cost Function for Omaha’s factory. 4. Analysis and Making Production Decisions You have now provided your company’s management with powerful tools that model the cost of
Answer:
According to the graph, if only one unit was produced, the cost per unit would be $1.00. In reality, the company would not call in its worker and start up the equipment to produce one unit. What safeguard do you think that many manufacturers use to avoid this type of problem?
The per-unit cost will be as follows,
a) Wichita factory has cost function as more up to 25000 units and less for above 25000 units.
b) Piece wise function for cost per units for production of units can be written as
C(x) = cost per unit, will be as follows,
C(x)=1÷x,0 [tex]\leq[/tex] x [tex]\leq[/tex] 25000,
=0.8÷x, 25000 [tex]\leq[/tex] x [tex]\leq[/tex] 35000,
C) cost per unit for 35000 unit
=C(35000)= 0.8÷35000
= 2.28(10⁻⁵)
What is the cost per unit?Cost per unit is referred to the cost of goods sold or the cost of sales, is how much money a company spends on producing one unit of the product they sell.
Thus, the cost per unit will be 2.28(10⁻⁵).
Learn more about cost per unit here,
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Which inequality is true?
-4>-6
-4<-6
-4<-8 -8 > -4
Answer:
-4>-6
Step-by-step explanation:
come on dude
Which expression is equivalent to 12n - 6x + 48 ?
A. 6 (2n - x + 8 )
B. 6nx +48
C. 2(6n + x ) +48
D. 12n - 6 (x + 4)
Answer:
A. 6 (2n - x +8)
Step-by-step explanation:
Answer:
6(2n-x+8)
Step-by-step explanation:
If a number is in front of the bracket it means times everything on the inside by that number.
So you times everything by 6.
6×2n=12n
6×-x= -6x
6×8=48
Then you put it into an equation:
12n-6x+48
Hope this helps :)
Jaxon is flying a kite, holding his hands a distance of 2.5 feet above the ground and
letting all the kite's string play out. He measures the angle of elevation from his hand
to the kite to be 33. If the string from the kite to his hand is 150 feet long, how many
feet is the kite above the ground? Round your answer to the nearest hundredth of a
foot if necessary
Answer:
Step-by-step explanation:
As Jaxon holding his hands a distance of 2.5 feet above the ground.
means h1= 2.5 feet
elevation angle from the hand is 33° so ∅=33°
distance of kite from his hand is 150 feet
so from the image we can see , now
as we know that ,
Sin∅ =h2/150
Sin33°=h2/150
0.55 =h2/150 (Sin33°= 0.545)
so h2= 81.70 feet
so height from ground is (H)=h1+h2= 2.5+81.70
H=84.20 feet
Select all of the expressions that are equivalent to 3(4x + 5y).
Answer:
3*4x+3*5y
12x+15y
2*3x*2+2*7.5y
What is the equation of a circle with center (-3, -5) and radius 4?
Answer:
The choose (A)
A- (x+3)²+(t+5)²=16
Answer:
A (x + 3)^2 + ( y + 5 )^2 = 16
Step-by-step explanation:
The formula for equation of a circle is (x - h ) ^2 + ( y - k ) ^2 = r ^2
( h , k ) represent the coordinates
r represents the radius
Plug in the numbers ( x - (-3) ) ^2 + ( y - (-5) ) ^2 = 4 ^2
2 negatives make a positive
So the equation would be (x + 3)^2 + ( y + 5 )^2 = 16
You also need to make sure you square the radius