(10x-3)(10x+3) help. please
Answers
Answer:
use can FOIL method or grid method
Related Questions
Tanvi's favorite holiday activity is making gingerbread houses. She always uses 7 pieces of licorice to make a window. This year, Tanvi used 56 pieces of licorice for the windows on her gingerbread house. How many windows are on tanvi gingerbread house this year
Answers
56 licorice/7 licorice per window = 8 windows
equation to find original price if sale price of $429 is a 34% discount
Answers
Answer:
The original price is $650
Step-by-step explanation:
There's an actual algebra method for this, but this is my method because I find it way easier to remember.
Since the most you can discount out of an item is 100% (well, it's considered free then) let's subtract 100 - 34, which is 66.
Now, turn it into a decimal because it makes the numbers easier- 0.66.
Since when you're finding the discount of an original price, you multiply the original price by the discount- instead for finding the original price for a discounted item we divide $429 by 0.66 instead, since when you divide a number by another number that's under 1 the quotient is a larger number.
So, 429 ÷ 0.66 = 650.
Therefore, the original price of the $429 sale price for a 34% discount is $650.
Suppose that the endpoints of the hypotenuse of a 30-60-90 triangle are (4, -2) and (7,2). Find the lengths of the
two legs of the triangle.
Answers
Answer:
90-60-30=0/. 4-2=2 and 7-2=5
Cindy spent $65.25 on ingredients for blueberry pies and $62.84 on ingredients for cherry pies. Each slice of ple sells for $3.50.
Part A
Write an expression to represent Cindy's profit if she sells b slices of blueberry pie and C slices of cherry ple.
Part B
Cindy sells 24 slices of blueberry ple and 15 slices of cherry ple. The ne
xt day, she sold 26 slices of blueberry ple and 17 slices of cherry pie. What was her total profit?
Answers
C. $108.41
Step-by-step explanation:
The best expression to use to find the total profit of Cindy's pie is 3.5(b+c) - 28.09. The total profit is the total revenue - total cost.
To put it into perspective, let's try an example.
b = 5
c = 12
Total profit = 3.5(b + c) - 28.09
= 3.5 (5 + 12) - 28.09
= 3.5 (17) - 28.09
= 59.5 - 28.09
Total profit = $31.41
Now for part B, we simply use the expression and substitute the values.
b = 24
c = 15
Total profit = 3.5(b + c) - 28.09
= 3.5(24 + 15) - 28.09
= 3.5(39) - 28.09
= 136.5 - 28.09
Total profit = $108.41
The expression that represents Cindy's profit is $3.5b - $128.09.
Cindy's total profit is $30.82.
What is profit?Profit is total revenue less total cost. Total revenue is the selling price per unit multiplied by the total units sold.
Profit = total revenue - total cost
($3.50b) - ($65.25 + $62.84)
$3.5b - $128.09
What is Cindy's total profit?Profit for the first day = $3.5(24 + 15) - $128.09
= ($3.5 x 39) - $128.09
= $136.50 - $128.09
=$8.41
Profit for the next day = $3.5(26 + 17) - $128.09
= ($3.5 x 43) - $128.09
= $150.50 - $128.09
= $22.41
Total profit = $22.41 + $8.41 = $30.82
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2. Jane bought three apples and two oranges. The total amount she paid was at most Php123.00. If x represents the cost of each apple and y represents the cost of each orange, which of the following mathematical statements represents the given situation?
a 3x + 2y 123
b. 3x + 2y < 123
c. 3x + 2y > 123
d. 3x + 2y < 123
HELP MEEEE
Answers
Your multiple-choice selection has a typo. Notice that choice b and d is the same answer.
For at most we use the (<) symbol.
$3 per apple = 3x.
$2 per orange = 2y.
Answer: 3x + 2y < 123
At \( 100 \mathrm{~km} / \mathrm{hr} \), how long would it take to travel through the (thickest) oceanic crust? Choose one: A. 1 hour B. 30 minutes C. 6 hours D. 6 minutes
Answers
It would take approximately 6 minutes to travel through the thickest oceanic crust at a speed of 100 km/hr.
To determine the time it would take to travel through the thickest oceanic crust at a speed of 100 km/hr, we need to know the thickness of the oceanic crust.
The oceanic crust is the outermost layer of the ocean floor and is generally thinner than the continental crust. On average, the thickness of the oceanic crust ranges from 5 to 10 kilometers (km). However, the thickness can vary depending on the specific location and geological factors.
Assuming we consider the thickest part of the oceanic crust, which could be up to 10 km thick, we can calculate the time it would take to travel through it at a speed of 100 km/hr.
Using the formula Time = Distance / Speed, we can determine the time as follows:
Time = (Thickness of Oceanic Crust) / (Speed)
Time = 10 km / 100 km/hr = 0.1 hr
Converting 0.1 hour to minutes, we have:
Time = 0.1 hr * 60 min/hr = 6 minutes
The correct answer is D. 6 minutes. This calculation is based on the assumption that we are considering the thickest part of the oceanic crust, which is approximately 10 km thick. It's important to note that the actual thickness of the oceanic crust can vary, and the time required would depend on the specific thickness encountered during the journey.
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If the time series in an exponential smoothing model exhibits a negative trend, the _____.
A) mean square error will be negative
B) value of smoothing constant will either be less than zero or greater than one
C) forecast will overshoot the actual values
D) future forecasts will rely solely upon expertise of people in developing forecasts
Answers
If the time series in an exponential smoothing model exhibits a negative trend, the correct option is: C) forecast will overshoot the actual values
Exponential smoothing is a time series forecasting method that uses a weighted average of past observations, with the weights decreasing exponentially as the observations get older.
If the time series exhibits a negative trend, the smoothing process will overemphasize the recent negative values, leading to a forecast that overshoots the actual values. The mean square error may or may not be negative, depending on the specific data and model parameters used. The value of the smoothing constant should still be between 0 and 1, regardless of the trend direction. And while expert input may still be valuable in developing forecasts, it should not be relied upon solely in an exponential smoothing model.Know more about the Exponential smoothing
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I will give brainliest PLEASE help!
The table shows how much money Diego has after buying some games and represents a linear function.
What is the y-intercept of the function shown in the table, and what does it represent
A. The y-intercept is (4,0), and the 4 represents the amount of money
Diego spends per game.
B. The y-intercept is (4,0), and the 4 represents the number of games
Diego buys.
C. The y-intercept is (0, 150). Diego has $150 before buying any
games.
D. The y-intercept is (0, 150). Diego spends $150 per game.
Answers
Explanation - if there is a 0 it’s always the y-intercept and then 150 is the amount of money he has while buying 0 games or before buying games it’s his starting amount
Answer: C. The y-intercept is (0, 150). Diego has $150 before buying any
Step-by-step explanation:
Brainlylist
Step-by-step explanation:
A panel for a political forum is made up of 14 people from three parties, all seated in a row. The panel consists of 1 Republican, 6 Green Party members, and 7 Democrats. In how many distinct orders can they be seated if two people of the same party are considered identical (not distinct)?
Answers
Given that
A panel for a political forum is made up of 14 people from three parties, all seated in a row.
The panel consists of 1 Republican, 6 Green Party members, and 7 Democrats.
For Republicans, they can be seated in 1 way.
For Green Party with 6 members, they can be arranged in
\(2,2,2=3\text{ways}\)While in 7 Democrats, they can be arranged in
\(2,2,2,1=4\text{ways}\)Therefore, if two people of the same party are considered identical, they can be arranged in
\(1\times3\times4=12ways\)Hence, they can be arranged in 12 distinct orders.
A cylinder-shaped sculpture is 24 meters high with a diameter of 6.8 meters. An artist plans to paint the entire surface blue. If one can of paint covers 50 square meters, how many cans does the artist need to paint the sculpture
Answers
Answer:
11.70cans ≈ 12cans
Step-by-step explanation:
According to question,
Given,A cylinder-shaped sculpture is 24 meters high with a diameter of 6.8 meters . thus Radius is 6.8/2 = 3.4 meters .And, An artist plans to paint the entire surface blue. & one can of paint covers 50 square meters.Now,First we have to find the total surface area of cylinder
total surface area of cylinder=2×π×r² + 2×π×r×h
Put values,we get
⇒2×3.14×3.4² + 2×3.14×3.4×24
⇒585.0448 square meters
Now,one can of paint covers 50 square meters.
So,To paint 585.0448 m² Area We need 585.0448 / 50 = 11.70Cans
Total Cans needed is 11.70cans ≈ 12cans .
20. When you divide a decimal by a number greater than 1, how does the quotient compare with the dividend? When you divide a decimal by a number less than 1, how does the quotient compare with the dividend? Give examples to support your answer. 1. Ja. Than salue
Answers
let y1 and y2 denote the proportions of two different types of components in a sample from a mixture of chemicals used as an insecticide. Suppose that y1 and y2 have the joint density function given by
f(y1,y2) = 2, 0<=y1<=1, 0<=y2<1, 0<= y1+y2 <=1 and 0 elsewhere.
Notice that Y1 +y2 <= 1 because the random variables denote proportions withint he same sample.
Find
a.) P(y1<=3/4, y2<=3/4)
b.) P(y1<=1/2, y2<=1/2)
Answers
The values of the samples are:
a.) P(y₁<=3/4, y₂<=3/4) = 7/8
b.) P(y₁<=1/2, y₂<=1/2) = 1/2
For this case we have two random variables Y1 and Y2, the joint density function is given by:
f(y₁,y₂(=2, ≤ y₁ ≤ 1, 0 ≤ y₂ ≤y₂, 0 ≤ y₁+y₂ ≤1
And 0 for other case.
We know that Y₁+Y₂≤1
Let Y1 =X and Y2 =Y we can plot the joint density function. First we need to solve the slope line equation from the condition y₁+y₂≤1
And we got that y₂≤1 - y₁ or equivalently in our notation y ≤ 1-x . And we know that the two random variables are between 0 and 1. So then the joint density plot would be given on the figure attached.
Part a
In order to find the probability that:
P(Y₁<=3/4, Y₂<=3/4) we can use the second figure attached.
We see that we have two triangles with the same Area, on this case
A = bh/2 = 1/4×1/4/2 and then the total area for both triangles is
At = 2 ×1/4×1/4/2
Since our density function have a height of 2 since the joint density is equal to 2 then we can find the volume for the two triangles like this :
Vt = 2 × 2 ×1/4×1/4/2
And then we can find the probability like this:
P(Y₁<=3/4, Y₂<=3/4) = 1 - 2 × 2 ×1/4×1/4/2
= 7/8
Part b
For this case w want this probability:
P(Y₁<=1/2, Y₂<=1/2) we can use the third figure attached.
We see that we have two triangles with the same Area, on this case
A = bh/2 = 1/2×1/2/2 and then the total area for both triangles is
At = 2 ×1/2×1/2/2
Since our density function have a height of 2 since the joint density is equal to 2 then we can find the volume for the two triangles like this :
Vt = 2 × 2 ×1/2×1/2/2
And then we can find the probability like this:
P(Y₁<=1/2, Y₂<=1/2) = 1 - 2 × 2 ×1/2×1/2/2
= 1/2
Hence we get the required answer.
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in problem 25 assume that the rate at which material is forgetten is proportional to teh amount memorized in time t> 0. deteremine a differential equation
Answers
The specific solution is: M = M_0 e^(-kt)
This equation describes the amount memorized at any time t, given the initial amount memorized and the rate of forgetting.
The differential equation for this problem can be determined by understanding the relationship between the rate of forgetting and the amount memorized. Since the rate of forgetting is proportional to the amount memorized, we can write this relationship as:
dM/dt = -kM
Where M is the amount memorized, t is time, and k is a constant of proportionality. This differential equation describes the rate of change of the amount memorized with respect to time.
To solve this differential equation, we can separate the variables and integrate both sides:
∫(1/M) dM = -k ∫dt
ln(M) = -kt + C
M = e^(-kt + C)
M = Ce^(-kt)
This is the general solution to the differential equation. We can use initial conditions to find the specific solution for a particular situation. For example, if we know the initial amount memorized (M_0) at time t=0, we can find the constant C:
M_0 = Ce^(0)
C = M_0
So the specific solution is:
M = M_0 e^(-kt)
This equation describes the amount memorized at any time t, given the initial amount memorized and the rate of forgetting.
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is 5/21 rational or irrational number ?
Answers
Answer:
rational
Step-by-step explanation:
irrational numbers can not be expressed as a fraction
Given:
The number is \(\dfrac{5}{21}\).
To find:
Whether the given number is rational or irrational.
Solution:
Rational number: If a number can be defined in the form of \(\dfrac{p}{q}\) where \(p,q\) are integers and \(q\neq 0\), then it is called a rational number.
For example: \(2,\dfrac{1}{3},0.25\) etc.
Irrational number: If a number cannot be defined in the form of \(\dfrac{p}{q}\) where \(p,q\) are integers and \(q\neq 0\), then it is called an irrational number.
For example: \(\sqrt{2},\sqrt{3},\pi \) etc.
The given number is \(\dfrac{5}{21}\). It is in the form of \(\dfrac{p}{q}\) where \(p=5, q=21\) and both are non-zero integers.
By the definition of rational numbers, the number \(\dfrac{5}{21}\) is a rational number.
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A game lasts 3/8 hours. Tammy played 12 of these games.
Answers
The total time that tammy sent in total playing games is; 4.5 hours
How to solve Fraction Word problems?The parameters given for Tammy in playing the game are;
Number of games played = 12 games
Time spent per game = ³/₈ hours
Thus;
Total time she spent playing game will be gotten by multiplying the time per game by number of games played to get;
Total time spent = ³/₈ * 12
= 9/2
= 4.5 hours
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Complete question is;
A game lasts 3/8 hours. Tammy played 12 of these games. For how long did she play in total? Write your answer in simplest form.
I have 39 test to do and it takes me approximately 5 minutes to do one. How long will it take me to do all of them?
Answers
Answer:
3 hrs and 15 minutes :)
Step-by-step explanation:
We can solve this by multiplying :)
39 x 5 = 195 minutes
195/60 = 3 hrs and 15 minutes :)
Have an amazing day!!
Please rate and mark brainliest!!
Answer: 195 minutes or 3 hours and 15 mintues
Step-by-step explanation:
We will multiply the number of tests by the amount of time it takes to do each test.
39 total tests * 5 minutes = 195 minutes
195 minutes or 3 hours and 15 mintues
What is the solution to this system of linear equations? 2x + y = 1 and 3x - y = -6
Answers
Answer:
(- 1, 3 )
Step-by-step explanation:
Given the 2 equations
2x + y = 1 → (1)
3x - y = - 6 → (2)
Adding the 2 equations term by term eliminates the y- term, that is
5x = - 5 ( divide both sides by 5 )
x = - 1
Substitute x = - 1 into either of the 2 equations and evaluate for y
Substituting into (1)
2(- 1) + y = 1
- 2 + y = 1 ( add 2 to both sides )
y = 3
Solution is (- 1, 3 )
Answer: (-1,-3) or A on the quiz
Got it right
Have a nice day
Poor road conditions, a slippery surface, or the undertow of the ocean are examples of which type of factors that may cause injury
Answers
Poor road conditions, a slippery surface, or the undertow of the ocean are examples of the following type of factors that may cause injury are human behavior, awareness, and response
Let's consider poor road conditions as an example. When roads are in a state of disrepair, they may contain potholes, loose gravel, or uneven surfaces. To evaluate the risk of injury, we can assign a probability value to the occurrence of an injury given the presence of poor road conditions. This probability could be denoted as P(injury|poor road conditions).
Similarly, a slippery surface, such as a wet floor or icy pavement, can also increase the chances of injury. By assigning a probability value to the event of injury given a slippery surface, we can express it as P(injury|slippery surface).
Lastly, the undertow of the ocean refers to a strong current beneath the water's surface that can pull swimmers away from the shore. To analyze the risk of injury in this scenario, we can again assign a probability value to the event of injury given the presence of an undertow, represented as P(injury|undertow).
To further understand the overall risk, we can consider the joint probability of multiple factors occurring simultaneously. For example, if both poor road conditions and a slippery surface are present, we can calculate the joint probability of injury as P(injury| poor road conditions and slippery surface).
This joint probability provides insight into the combined impact of these factors on the likelihood of injury.
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Which graph represents a linear function?
Answers
Answer: The second one
Step-by-step explanation:
The first one has a curve and has an exponent in the function. The second one is straight and follows y=Mx+b. The third is a curve and exponential and the fourth has a degree with an exponent of atleast 3 and has curves.
Answer:
Graph BStep-by-step explanation:
A linear function is represented by a straight line.
As we see only one graph, the second option, is a straight line. All the others are various curves.
A cyclist's speed is 1.5 times faster than a walker's speed. they simultaneously start at the same point and after 1.5 hours the distance between them is 12.5 miles. what are their speeds?
Answers
The speed of the walker is 16.67 miles per hour.
The speed of the cyclist is 25 miles per hour.
How to calculate the value?Let the speed of a walker = x
Biker's speed = 1.5x
Their relative speed will be:
= 1.5x - x = 0.5x
Distance between them = 12.5 miles
Time taken = 1.5 hours.
It should be noted that distance will be:
= Speed × Time
12.5 = 1.5 × 0.5x
Divide through to get x
12.5 = 0.75x
x = 16.67 miles per hour.
Speed of cyclist = 16.67 × 1.5 = 25 miles per hour.
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-1
>-6
0
»-2
4
7
→ 5
8
6
12
8 ܠ
13
>17
Answers
Answer:
KEZktrfghugifl7d67reutxdjf
Step-by-step explanation:
Answer:
a
Step-by-step explanation:
please help I’m literally failing this class D:
Answers
1 minute 2mins 6 mins
Help me solve this problem please please zoom in if u can i need help
Answers
Answer:
c
Step-by-step explanation:
it is the awnser
can someone help me
Answers
Step-by-step explanation:
k(-5)= 6.(-5)+100
=30 + 100
=70
Answer:
70
Step-by-step explanation:
We can substitue -5 in for x:
k(-5) = 6(-5) + 100 = 70.
Wyatt walks 3 miles each day for 6 days. Aaliyah walks 4 1/2 miles each day for 6 days. How many more miles will Aaliyah walk in 6 days than Wyatt?
Someone pleeeeease help me
Answers
WYATT: 3 miles multiplied by 6 days = 18 miles
AALIYAH: 4.5 miles multiplied by 6 days= 27 miles
the difference is 9 miles therefore Aaliyah walked 9 more miles than Wyatt.
Answer:
Wyatt walks 3 miles per day for 6 days, so he walks a total of:
3 x 6 = 18 miles
Aaliyah walks 4 1/2 miles each day for 6 days, so she walks a total of:
4 1/2 x 6 = 27 miles
To find how many more miles Aaliyah walks than Wyatt, we can subtract Wyatt's total distance from Aaliyah's total distance:
27 - 18 = 9 miles
Therefore, Aaliyah will walk 9 more miles than Wyatt in 6 days.
Step-by-step explanation:
What is the value of (-12) + (- 33)? Can someone explain the steps to the answer please?.. ASAP
Answers
Answer:
(-12) + (-33) = (-45)
Given m||n, find the value of x.
(2x+9)
(7X+24)
Answers
Given, 9−7x=5−3x
Given, 9−7x=5−3xPut x terms on one side and constants on another side.
Given, 9−7x=5−3xPut x terms on one side and constants on another side.⇒9−5=7x−3x
Given, 9−7x=5−3xPut x terms on one side and constants on another side.⇒9−5=7x−3x⇒4=4x
Given, 9−7x=5−3xPut x terms on one side and constants on another side.⇒9−5=7x−3x⇒4=4x⇒x= 4/4 =1
=1Hence, required solution is x=1.
please mark me a brainlist answer I need only 1 ok
Find the scale factor
Answers
Answer:
3
Step-by-step explanation:
4*3=12
3*3=9
5*3=15
So you find the number that can be multiplied or divided by each side the same to get the new number
Explanation:
Focus on the horizontal sides. The jump from 3 to 9 is "times 3".
If you focus on the vertical sides, the jump from 4 to 12 is also "times 3".
Lastly, the slanted sides has a jump from 5 to 15 which is also "times 3".
This all shows the scale factor is 3. The larger triangle on the right has its sides 3 times as long compared to the smaller triangle.
Help pleaseeeee Its very diffucult
Answers
Answer:
The result is a right cone
Step-by-step explanation:
NEED HELP ASAP! TY IN ADVANCE <3 DO THE TABLE OF VALUES AS WELL!
Answers
Answer:
Domain {-2, 0, 1, 6}
Range {13, 5, 7, 77}
Step-by-step explanation:
table of values
Domain {-2, 0, 1, 6}
Range {13, 5, 7, 77}
Answer:
Step-by-step explanation:
\(y_{1}\) = 2( - 2 )² + 5 = 2(4) + 5 = 13
\(y_{2}\) = 2( 0 )² + 5 = 5
\(y_{3}\) = 2( 1 )² + 5 = 7
\(y_{4}\) = 2( 6 )² + 5 = 77
Range: { 5, 7, 13, 77 }
