Answer:
x = -10
Step-by-step explanation:
-2x - 10y = 20 (plug y=0)
-2x = 20
x = 20/-2
x = -10
PLEASE PLEASE HELP!! I NEED THE ANSWERS ASAP
Answer:
Pictures below showing the answer :)
Step-by-step explanation:
Martha and her brother started their own car-washing business. They charge $8.50 per car. If they wash on average 22 cars per weekend, use front-end estimation to find out about how much their business will earn in 5 weeks. A. $800 B. $1000 C. $1200 D. $1350
Answer:
$1,000
Step-by-step explanation:
Given that:
Charge per car = $8.50
Averahe car washed per weekend = 22
Using front end estimation, how much will business earn in 5 weeks ;
Hence amount earned per weekend :
22 * $8.50 = $187
Using front end estimation :
$187 - - -> $200
$200 * number of weeks
($200 * 5) = $1,000
Answer:
$1,000
Step-by-step explanation:
I know because I took the test.
Ruben bought 6 comic books for $21 . Each comic book was the same price.
What was the cost for 1 comic book
Answer:
1 comic book costs $3.50.
Step-by-step explanation:
21 ÷ 6 = 3.5
How do you write 0.00148 in scientific notation?
Answer:
1.48*10^-3
Step-by-step explanation:
You have to move to get to the decimal point
Have a good day! :)
1. If a square-thread screw having a major diameter of 19 mm and six threads per 25. 4mm is used to lift a load of 17. 80 KN, compute the efficiency of the power screw in raising the load. Use a coefficient of friction of 0. 20
The efficiency of the power screw in raising the load is approximately 6976%.
The efficiency of a power screw can be calculated using the formula: Efficiency = (Ideal Mechanical Advantage / Actual Mechanical Advantage) x 100% To find the Ideal Mechanical Advantage (IMA) of the screw, we can use the formula:
IMA = (π / tan(α)) x (π / 2) x (D / P)
Where: π is the mathematical constant pi (approximately 3.14159) tan(α) is the coefficient of friction (given as 0.20) D is the major diameter of the screw (given as 19 mm) P is the pitch of the screw, which can be calculated as (25.4 mm / number of threads per inch) First, let's calculate the pitch: Number of threads per inch = 6
Pitch = 25.4 mm / 6 = 4.23 mm (approximately)
Now, we can substitute the values into the formula to find IMA:
IMA = (π / tan(α)) x (π / 2) x (19 mm / 4.23 mm)
Using the given coefficient of friction, we have:
IMA = (π / 0.20) x (π / 2) x (19 mm / 4.23 mm)
Simplifying the equation, we get:
IMA = 9.87 x 1.57 x 4.49
Calculating IMA, we find:
IMA ≈ 69.76
Now, we need to find the Actual Mechanical Advantage (AMA), which can be calculated using the formula:
AMA = Load / Effort
Where:
Load is the weight being lifted (given as 17.80 kN)
Effort is the force applied to turn the screw
Since the screw is being used to lift the load, the Effort is equal to the load.
AMA = 17.80 kin / 17.80 kin
AMA = 1
Now, we can calculate the efficiency using the formula:
Efficiency = (IMA / AMA) x 100%
Efficiency = (69.76 / 1) x 100%
Efficiency ≈ 6976%
The efficiency of the power screw in raising the load is approximately 6976%.
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(PLEASE HELP ITS TIMED SLRGSRPGSRJMP;SXR)
Marie can find the volume of a cube by using the formula V = s ³, where s represents the side length of the cube. If Marie’s cube has a side length of 2 and 1/2 centimeters, what is the volume of her cube? Show your work. Write your answer as a fraction AND a decimal.
Answer:
8 x 4(7x) x^9
Step-by-step explanation
JUST TAKE THE ANSWER FSBXNFDCDWRGTCHVBHGFDCCFVGHGFVC VBHYREWSZEDXCFGTGVBHJUKJMK
Carlos keeps track of his math scores of tests. His scores on his math tests are
the following: 100, 88, 50, 50, 90, 70, 80 What is the:
Median?
Mode?
Mean?
Range?
Answer:
Median: 75
Mode: 50
Mean: ≈ 75.4
Range: 50
Step-by-step explanation:
Median:Arrange the numbers in order:
50, 50, 70, 80, 88, 90, 100
There is no exact middle number.
\(70 + 80 = 150\\150/2 = 75\)
The median is about 75.
Mode:50, 50, 70, 80, 88, 90, 100
"50" appears the most.
The mode is 50.
Mean:Add all numbers in the set.
\(100+88+50+50+90+70+80 = 528\)
Divide by the number of values in the set.
\(528/7 = 75.4285714286\)
75.4285714286 ≈ 75.4
The mean is about 75.4.
Range:Subtract the smallest number in the data set from the largest number in the data set.
\(100-50=50\)
The range is 50.
Brainilest appreciated.
What is the slope intercept form of 13x-11y=-12
Answer: y=13/11x+12/11
Step-by-step explanation:
13x-11y=12
-13x -13x
-11y=-13x-12
divide by -11 on each side
y=13/11x+12/11
In an expression using the logical operator ____, as soon as one of the compound conditions is found to be false, no further conditions are tested and the expression evaluates to false. a. OrElse b. Nor c. AndAlso d. Xor
In an expression using the logical operator And Also, as soon as one of the compound conditions is found to be false, no further conditions are tested and the expression evaluates to false.
The And Also operator is a short-circuiting operator that is used to combine two or more Boolean expressions. It evaluates the left-hand expression first and then the right-hand expression only if the left-hand expression evaluates to true
. If the left-hand expression evaluates to false, then the right-hand expression is not evaluated at all. This helps to improve the performance of the code by avoiding unnecessary evaluations of expressions that would not change the outcome of the overall condition.
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In an expression using the logical operator And Also , as soon as one of the compound conditions is found to be false, no further conditions are tested and the expression evaluates to false. Therefore option c. And Also correct.
This is because the AndAlso operator employs short-circuit evaluation, meaning it stops evaluating once it encounters
the first false condition since the overall result will definitely be false.
In an expression using AndAlso, if the first condition is false, the entire expression is evaluated as false without testing
any further conditions. This is also known as short-circuit evaluation.
In contrast, the OrElse operator evaluates to true as soon as one of the compound conditions is true, without testing
any further conditions. The Nor and Xor operators are less commonly used and have different behavior.
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Jeremy can buy two tacos at 75 cents each and a medium drink for $1.00—or a "value meal" with three tacos and a medium drink for $3. For him, the marginal cost of the third taco would be?
A. 0
B. $0.75
C. $1.00
D. $0.50
Answer: To determine the marginal cost of the third taco for Jeremy, we need to compare the cost of buying it individually to the cost of buying it as part of the value meal.
Buying two tacos individually:
Cost of two tacos: 2 tacos * $0.75/taco = $1.50Buying the value meal with three tacos:
Cost of the value meal: $3.00To calculate the marginal cost, we subtract the cost of buying the value meal from the cost of buying two tacos individually:
Marginal cost = Cost of buying two tacos individually - Cost of the value mealMarginal cost = $1.50 - $3.00Marginal cost = -$1.50
The negative value indicates that buying the value meal is more cost-effective than buying the third taco individually. Therefore, the marginal cost of the third taco for Jeremy would be $0 (option A).
What are the two requirements that make a Polygon?
Answer: Radeon R9 390 graphics card with a Core i5-2300 2.8GHz or FX-6350 processor
Step-by-step explanation:
Answer:
Equiangular and Equilateral
Step-by-step explanation:
I tried
Fill in the blank: A random variable is a variable whose outcomes are determined by popularity, many factors
A random variable is a variable whose value is unknown or a function that assigns values to each of an experiment's outcomes.
A random variable is a variable whose values are determined by chance. A random variable is a function that associates a real number with each element in the sample space. The value in this box depends on chance and can be any of the values possible.
A continuous variable is a variable whose value is obtained by measuring. Examples: height of students in class. weight of students in class. time it takes to get to school. distance traveled between classes.
A random variable, usually written X, is a variable whose possible values are numerical outcomes of a random phenomenon. There are two types of random variables, discrete and continuous.
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new tables created with the make-table query retain the field ____ of the underlying table(s).
New tables created with the make-table query retain the field data type of the underlying table(s).
What is a table?Tables and graphs are visual representations of data that are used to organize data and reveal patterns and relationships. Tables and graphs are frequently used by researchers and scientists to report research findings.
A make table query retrieves data from one or more tables before loading the results into a new table. That new table can live in the database you're currently working in, or it can be created in a different database. Make table queries are typically used when you need to copy or archive data.
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Sara buys 1 pair of jeans for $20 and 5 shirts .The total of her purchase was $55.Witch equation models the scenario? a)1+5=20x b)20+5x=55 c)20-5x=55 d)1x+5=55
Answer:
the answer is b)20+5x=55
when using the method of elimination to solve the system of equations below, what is the result of adding the two equations together?
You need to manipulate the equations to get the same coefficient for one of the variables and then add or subtract the equations to eliminate that variable.
When using the method of elimination to solve the system of equations, the goal is to eliminate one of the variables by adding or subtracting the equations. To do this, you want to choose a coefficient for one of the variables that is the same in both equations, but with opposite signs.
For example, if the system of equations is:
2x + 3y = 7
4x - 5y = -13
You could multiply the first equation by -2 to get:
-4x - 6y = -14
Then, when you add this equation to the second equation, the x variable is eliminated:
-4x - 6y + 4x - 5y = -14 - 13
Simplifying this equation gives you:
-11y = -27
To find the value of y, you would divide both sides by -11:
y = 27/11
To find the value of x, you would substitute this value of y into one of the original equations and solve for x.
As for the specific question of what is the result of adding the two equations together, it depends on the coefficients of the variables in the equations. You need to manipulate the equations to get the same coefficient for one of the variables and then add or subtract the equations to eliminate that variable.
It looks like you didn't provide the system of equations you need help with. Please provide the two equations, and I'll gladly help you with the method of elimination and the result of adding them together.
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Solve for given time
A colony of 36,000 bacteria grows continuously at a rate of 12%. How many bacteria will there be in 2 years?
Answer:
let P=36000
R=12%
T=2years
Step-by-step explanation:
no.of bacteria after 2=P(1+R/100)^t
=36000(1+12/100)²=45158.4
Write an equation in point-slope form for the line that passes through each point with the given slope (-1,-2) m= 3
Answer:
y + 2 = 3(x + 1)Step-by-step explanation:
The Point-Slope form of equation of a line with slope of "m" and passing through point (x₁, y₁) is: y - y₁ = m(x - x₁)
m = 3
x₁ = -1
y₁ = -2
Therefore the equation:
y - (-2) = 3(x - (-1))
y + 2 = 3(x + 1)¿Cuál es la ecuación de la línea que pasa a través de los puntos A (1,2) y B (4,3)
Answer:
Step-by-step explanation:
(4-3)/(2-1= 1/1 = slope = 1
y =(1)x + b, plug in either point to solve for b
3 = 1 +b
b = 2
Use the factorization A PDP 1 to compute Ak, where k represents an arbitrary integer. a 7(b-a) 17 a 017
If A = \(PDP^{-1}\), Then \(A^{k}\) = \((PDP^{-1}) ^{k}\) = \(PDP^{-1}\)\(PDP^{-1}\) .....\(PDP^{-1}\) = \(PD^{k} P^{-1}\)since \(P^{-1}\) P = I, the identity matrix.
Further, the representation can be made as in the following attachment.
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Help please. Thanks!!!!!
Answer:
slope: 20/3 parallel
Step-by-step explanation:
y1-y2/x1-x2 gives you slope(30--10/12-6). Plot the points, create line segments, you'll find that they are parallel.
Answer:
1. 6\(\frac{2}{3}\)
2. Parallel
Step-by-step explanation:
To find the slope, you need to find the \(\frac{rise}{run}\) between two points.
\(\frac{rise}{run}\) = \(\frac{30-(-10)}{12-6}\)
= \(\frac{40}{6}\)
= 6\(\frac{2}{3}\)
If a graph has more than a point on the y-axis even though the x-axis remains the same, it means that it is a vertical line. Since Graph 1 has (-1) on the x-axis but there are two points on the y-axis, 4 & (-9), it is a vertical graph. Since Graph 2 has (11) on the x-axis but there are two points on the y-axis, (-2) & 6, it is also a vertical graph. Thus, both graphs are parallel.
Customers of a phone company can choose between two service plans for long distance calls. THE first plan has a $19 monthly fee and charges an additional fee of $0.10 for each minute of calls. THE Second plan has $0 monthly fee but charges $0.14 for each minute of calls. For how many minutes of calls will the cost of the two plans be equal?
Equating the two expressions representing the total charges for each plan, it will take 475 minutes for the cost of the two plans to be equal.
What are mathematical expressions?Mathematical expressions combine variables with constants, values, and numbers without using the equal symbol (=).
On the other hand, equations are two or more mathematical expressions that are shown to be equal or equivalent.
First Plan Second Plan
Monthly fee $19 $0
Unit fee per minute $0.10 $0.14
Let the minutes under each Plan = x
Expressions:19 + 0.10x ...Expression for Plan 1
0.14x ...Expression for Plan 2
For the cost of the two plans to be equal,
19 + 0.10x = 0.14x
19 = 0.04x
x = 475
Check for Total Costs:
Plan 1: 19 + 0.10x = 19 + 0.10(475) = $66.50
Plan 2: 0.14x = 0.14(475) = $66.50
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Chicken eggs can be categorized as large if they weigh at least 2 ounces. Clare weighs 48 large eggs and finds that they have a mean weight of 2.1 ounces and a mean absolute deviation of 0.08 ounces. Interpret 0.08 ounces in this situation.
Answer: The average difference of weights of all 48 eggs from mean eight is 0.08.
Step-by-step explanation:
The mean absolute deviation of a data interprets the mean distance between each data point and the mean.
When this distance goes larger it means data has greater variability
Given, 48 large eggs have a mean weight of 2.1 ounces and a mean absolute deviation of 0.08 ounces.
It means that the average difference of weights of all 48 eggs from mean eight is 0.08.
Let 2 = 3 + 6i and w = a + bi where a, b E R. Without using a calculator (a) determine z/w and hence, b in terms of a such that z/w is real; (b) determine arg{z - 9}; (c) determine =||w/w||
The correct answers for the given data are (a) b = 6, (b) arg(z - 9) = -π/4, and (c) ||w/w|| = 1.
(a) To determine z/w, we first need to express z and w in terms of their real and imaginary parts. Given 2 = 3 + 6i, we can rewrite it as z = 3 + 6i. Similarly, w = a + bi. Now, let's calculate z/w:
z/w = (3 + 6i)/(a + bi)
To make z/w real, the imaginary part of the denominator should cancel out the imaginary part of the numerator. This means 6/a = 6i/b. Simplifying further, we get ab = 6a + 6bi. Since a and b are real numbers, the only way for the equation to hold is if b = 6 and a = 1. Therefore, b = 6.
(b) To determine arg(z - 9), we need to subtract 9 from z = 3 + 6i:
z - 9 = (3 + 6i) - 9 = -6 + 6i
The argument (or angle) of -6 + 6i can be calculated as:
arg(-6 + 6i) = arctan(6/(-6)) = arctan(-1) = -π/4
(c) To determine ||w/w|| (the magnitude of w divided by the magnitude of w), we need to find the magnitude of w. Given w = a + bi, the magnitude of w is given by:
||w|| = √(a^2 + b^2)
Now, substituting a = 1 and b = 6 (from part a):
||w|| = √(1^2 + 6^2) = √37
Therefore, ||w/w|| = ||w||/||w|| = 1.
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help, please the question and thank you
Answer:
2 and 5
Step-by-step explanation:
They are on opposite sides of the transversal and both are outside the parallel lines
The number of traffic accidents on successive days are independent Poisson random variables with mean 2.
(a) Find the probability that 3 of the next 5 days have two accidents.
The probability that 3 of the next 5 days have two accidents is approximately 0.225. We can use the Poisson distribution to model the number of traffic accidents on each day, with a mean of 2. Let X be the number of accidents on a single day, then X ~ Poisson(2).
(a) To find the probability that 3 of the next 5 days have two accidents, we can use the binomial distribution since we are interested in the number of successes (days with two accidents) in a fixed number of trials (5 days). Let Y be the number of days with two accidents in 5 days, then Y ~ Binomial(5, P), where P is the probability of having two accidents on a single day.
Since X ~ Poisson(2), we know that P(X = 2) = e^(-2) * 2^2 / 2! = 0.2707 (using the Poisson probability formula). Therefore, P = 0.2707 is the probability of having two accidents on a single day.
Using the binomial probability formula, we can find the probability of having exactly 3 days with two accidents in 5 days:
P(Y = 3) = (5 choose 3) * 0.2707^3 * (1 - 0.2707)^2 = 0.225
Therefore, the probability that 3 of the next 5 days have two accidents is approximately 0.225.
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Write 5/3 as a mixed number.
Answer:
1 \(\frac{2}{3}\)
One and two thirds
Step-by-step explanation:
Divide the numerator by 3
Write down the whole number answer
Use the remainder as the new numerator over the denominator, which is the fraction part of the mixed number.
I hope this helps!!
The fraction 5/3 as a mixed number is \(1\frac{2}{3}\).
To write the fraction 5/3 as a mixed number, we need to find the whole number and the proper fraction parts.
A mixed number is a combination of a whole number and a proper fraction (where the numerator is smaller than the denominator).
Divide the numerator (5) by the denominator (3).
5 ÷ 3 = 1 with a remainder of 2
The quotient (1) represents the whole number part, and the remainder (2) becomes the numerator of the proper fraction.
The denominator remains the same, which is 3.
Hence, the mixed number representation of 5/3 is \(1\frac{2}{3}\).
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1 of 3
?
↑
Enter the next 3 terms from the geometric sequence below.
3, 6, 12,...
T4= 0 T5 = 0 T6 = O
Answer:
24, 48, 96
Step-by-step explanation:
to find the next term in a geometric sequence, multiply the previous term by the common ratio r
r = \(\frac{a_{2} }{a_{1} }\) = \(\frac{6}{3}\) = 2 , then
a₄ = a₃ × 2 = 12 × 2 = 24
a₅ = a₄ × 2 = 24 × 2 = 48
a₆ = a₅ × 2 = 48 × 2 = 96
the next 3 terms are 24, 48, 96
xbar1-xbar2 is the point estimate of the difference between the two population means. group of answer choices true false
The statement \(xbar1-xbar2\) is the point estimate of the difference between the two population means" is true.
The statement\("xbar1-xbar2\) is the point estimate of the difference between the two population means" is true.
What is the Point estimate?
A point estimate is a solitary number or worth utilized as a gauge of a populace trademark.
A point estimate of a populace attribute is the most probable estimation of the populace trait dependent on a random sample of the populace.
The point estimate of the difference between the two population means is \(xbar1-xbar2.\)
This is valid when comparing two means from two separate populations.
Therefore, the statement \("xbar1-xbar2\) is the point estimate of the difference between the two population means" is true.
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-2(x+4)+3x=x-8solve the equation
Step-by-step explanation:
-2(x+4)=-3x+x-8
Movemos todos los términos a la izquierda:
-2(x+4)-(-3x+x-8)=0
Sumamos todos los números, y todos los variables
-2(x+4)-(-2x-8)=0
Multiplicamos paréntesis
-2x-(-2x-8)-8=0 Eliminamos
paréntesis
-2x+2x+8-8=0
Sumamos todos los numeros juntos, y todas las variables
=0
x=0/1
x=0
Which of the following is a solution of y - x < -3?
A. (6, 2)
B. (2, 6)
C. (2, -1)
the answer is A
it is not B or C