Question 2.
Given the system of equations:
• -x + y = 1
,• x + y = 11
Let's solve the system by elimination method using addition and subtraction.
To solve the system, add both equations to eliminate the x variable.
-x + y = 1
+ x + y = 11
__________
2y = 12
Divide both sides of the equation by 2:
\(\begin{gathered} \frac{2y}{2}=\frac{12}{2} \\ \\ y=6 \end{gathered}\)Now, substitute 6 for y in either of the equations:
Let's take the second equation
\(\begin{gathered} x+y=11 \\ \\ x+6=11 \\ \\ \text{Subtract 6 from both sides:} \\ x+6-6=11-6 \\ \\ x=5 \end{gathered}\)Therefore, we have the solution:
x = 5, y = 6
Q1. An industry analyst wants to compare the average salaries of two firms, both to each other and to the industry. Firm A's average salary is 93% of the industry average, Firm B's average salary is $58,000, and the industry average salary is 96% of Firm B's average salary. a. Determine the industry average salary. b. Determine Firm A's average salary. c. Express Firm B's average salary as a percentage of Firm A's average salary. Round the percentage to two decimals.
a.The Industry Average Salary is $55,680. b.The Firm A's Average Salary is $51,718.40 .c. Firm B's average salary is approximately 112.27% of Firm A's average salary.
a. To determine the industry average salary, we can use the information that the industry average salary is 96% of Firm B's average salary. Firm B's average salary is $58,000. Therefore, we can calculate the industry average salary as follows:
Industry Average Salary = 96% of Firm B's Average Salary
= 0.96 * $58,000
= $55,680
b. Firm A's average salary is stated as 93% of the industry average salary. To calculate Firm A's average salary, we can multiply the industry average salary by 93%:
Firm A's Average Salary = 93% of Industry Average Salary
= 0.93 * $55,680
= $51,718.40
c. To express Firm B's average salary as a percentage of Firm A's average salary, we can divide Firm B's average salary by Firm A's average salary and multiply by 100:
Percentage = (Firm B's Average Salary / Firm A's Average Salary) * 100
= ($58,000 / $51,718.40) * 100
≈ 112.27%
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Somebody help me pls ♀️
1. The trigonometric ratios are given as follows:
Sine = opposite/hypotenuse.Cosine = adjacent/hypotenuse.Tangent = opposite/adjacent.2. The equation to solve for x is given as follows: sin(52º) = x/13.
3. Two equations to solve for m are given as follows:
n² + m² = l².m = square root (l² - n²).4. The length of the hypotenuse of the triangle is given as follows: 7.9 inches.
5. The lengths are given as follows:
BD = 4.3 cm.BC = 11.5 cm.What are the trigonometric ratios?The three trigonometric ratios are given as follows:
Sine of angle = length of opposite side divided by the length of the hypotenuse.Cosine of angle = length of adjacent side divided by the length of the hypotenuse.Tangent of angle = length of opposite side divided by the length of the opposite side.In the second problem, we have that the side x is opposite to the angle of 52º, while the hypotenuse is of 13, hence the equation to solve for x is given as follows:
sin(52º) = x/13.
In item 3, the Pythagorean Theorem is used to solve for m, as follows:
n² + m² = l².
m² = l² - n²
m = square root (l² - n²).
In item 4, we have that the angle opposite to the leg of length 7 inches is of 62º, hence the hypotenuse is given as follows:
sin(62º) = 7/h
h = 7/sin(62º)
h = 7.9 inches.
The length BD in item 5 is obtained as follows:
cos(30º) = BD/5
BD = 5 x cos (30º)
BD = 4.3 cm.
Then the length BC is calculated as follows:
sin(22º) = 4.3/BC
BC = 4.3/sin(22º)
BC = 11.5 cm.
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Find the constant of variation for the relation and use it to write an equation for the statement. Then solve the equation. If y varies inversely as the square of x, and y=7/4 when x=1, find y when x=3
Answer:
y=7/36
Step-by-step explanation:
Since y varies inversely to the square of x, we can say
\(y = z/x^2\)
where z is the constant of variation.
Then, from knowing that y=7/4 when x=1, we plug them in to find z.
\(7/4=z/(1^2)\\z=7/4\)
Now we have the full equation,
\(y=7/4x^2\)
Plug x=3 in and we get,
\(y=7/4(3^2) = 7/36\)
3 1 A bottle of drink is sold at P4.85. A refund of 25 thebe is offered for returning the empty bottle. (a) Express the refund for an empty bottle as a percentage of the cost of the bottle of drink. 5 points*
Answer:
The cost of the bottle of drink is P4.85. The refund for an empty bottle is 25 thebe.
To express the refund as a percentage of the cost of the drink, we need to convert the refund to the same unit as the cost of the drink.
1 thebe = 0.038 Philippine pesos (as of June 2023)
25 thebe = 0.95 Philippine pesos
Therefore, the refund for an empty bottle is 0.95/4.85 x 100% = 19.59%
So the refund for an empty bottle is 19.59% of the cost of the bottle of drink.
hope it helps you.....
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Help !!
centimeters and millimeters <3
1 cm = 10 mm. Length of book : 28 cm. Length of book = 280 mm. This shows that measurements in mm are the same but look to have a higher number .
How to compare centimeters and millimeters ?The conversion factor provided states that 1 cm is equal to 10 mm, which means that 1 cm is made up of 10 individual millimeters.
The length of my book in when measured in millimeters is 280 mm.
In centimeters, this is therefore:
= 280 mm / 10 cm /mm
= 28 cm
Although the numerical value appears higher when expressed in millimeters, it is important to note that the actual length of the book remains the same.
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Expand and simplify (2x - 1)(x + 3)(x - 5)
Answer:
2x^3-5x^2-28x+15 -------------------------expanded
2x^3-5x^2-28x+15--------------------simplified
Step-by-step explanation:
\left(2x-1\right)\left(x+3\right)\left(x-5\right)
=2x^2x+2x^2\left(-5\right)+5xx+5x\left(-5\right)-3x-3\left(-5\right)
simplyfied
\left(2x^2+5x-3\right)\left(x-5\right)
=2x^2x+2x^2\left(-5\right)+5xx+5x\left(-5\right)-3x-3\left(-5\right)
=2x^3-5x^2-28x+15
Can somebody help ill give you brainliest!!! and 20 points
Answer:
Genotype: 100% rr
phenotype: 100% white
Step-by-step explanation:
since there are no dominant genes the cross will definitely be a rr genotype
what is the property of 3x(5x7)=(3x5)7
The property you are referring to is called the associative property of multiplication. According to this property, when multiplying three numbers, the grouping of the numbers does not affect the result. In other words, you can change the grouping of the factors without changing the product.
In the equation you provided: 3x(5x7) = (3x5)7
The associative property allows us to group the factors in different ways without changing the result. So, whether we multiply 5 and 7 first, or multiply 3 and 5 first, the final product will be the same.
0.7 inches, 0.762 inches, 0.079 inches, and 0.7091 put them in order from small to large...
The οrder frοm smallest tο largest is 0.079 inches, 0.7 inches, 0.7091 inches, 0.762 inches
What is the ascending οrder?Ascending οrder means arranging numbers in increasing οrder, that is, frοm smallest tο largest. Tο arrange numbers in any οrder, we first need tο cοmpare them. First Cοmpare, then Order. Arranging numbers in ascending οrder: Cοunt the number οf digits in each number.
Tο οrder the given numbers frοm smallest tο largest, we need tο cοmpare them tο each οther and arrange them in ascending οrder.
0.079 inches < 0.7 inches < 0.7091 inches < 0.762 inches
Therefοre, the οrder frοm smallest tο largest is 0.079 inches, 0.7 inches, 0.7091 inches, 0.762 inches.
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A quick survey of peanut butter prices had standard deviation and mean of $0.26 and $3.68, respectively. Compute the area for a peanut butter jar costing more than $4.25.
The area for a peanut butter jar costing more than $4.25 is 0.0143.
Z score is used to determine by how many standard deviations the raw score is above or below the mean, The z score is given by:
\(z=\frac{x-\mu}{\sigma} \\\\where\ x= raw\ score, \mu=mean, \sigma=standard\ deviation\)
Given that μ = 3.68, σ = 0.26
For x > 4.25:
\(z=\frac{4.25-3.68}{0.26} =2.19\)
From the normal distribution table, P(z > 2.19) = 1 - P(z < 2.19) = 1 - 0.9857 = 0.0143 = 1.43%
The area for a peanut butter jar costing more than $4.25 is 0.0143.
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Solve for x.
5x + 14 greater than or equal to 54
Answer:
x = 8
Step-by-step explanation:
Answer:
equal, tell me if I'm wrong
Use the image to answer the question. A vertical number line starting at negative 10 on the bottom of the line with tick marks every one unit up to positive 10 at the top. The point negative 4.5 is labeled. What does the absolute value of the point labeled in the image mean if the number line represents temperature change? There was no change in temperature. The temperature equals 4.5 degrees. The temperature decreased 4.5 degrees. The temperature increased 4.5 degrees. HURRY UP
Since the point negative 4.5 (-4.5) is labeled on this number line representing temperature change, the absolute value of the point labeled in the image means that: B. the temperature equals 4.5 degrees.
What is a number line?In Mathematics, a number line can be defined as a type of graph with a graduated straight line which comprises both positive and negative numbers that are placed at equal intervals along its length.
This ultimately implies that, a number line primarily increases in numerical value towards the right from zero (0) and decreases in numerical value towards the left from zero (0).
In conclusion, the absolute value of a number is always positive and it can be used for describing the distance of a number from zero (0) on the number line, without taking its direction into consideration.
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if you take away 25 from a number you will be left with two and halftimes 30. what is the number?
What is the answer pleaseee
Answer: 803.84cm3
Step-by-step explanation:
The formula for finding the volume of a cylinder is πr2h.
In other words, the area of the top face's circle times the height.
To find the circle's area, we first find the radius of the circle. Since the diameter is 8cm, we divide by 2 to get the radius, which is 4cm.
4cm squared is 4cm x 4cm, which is 16cm. 16cm times 3.14 is 50.24cm squared.
Now, we have the area of the circle. 50.24cm squared!
The height is 16cm, so to find the cylinder, we times the area of the circle by the height of the cylinder! So,
16cm x 50.24cm squared = 803.84cm cubed.
The volume of the can of soup is 803.84cm cubed.
Can someone help me please I don’t get this
\(\begin{array}{llll} \textit{Logarithm Cancellation Rules} \\\\ \stackrel{\textit{we'll be using this one}}{log_a a^x = x}\qquad \qquad a^{log_a x}=x \end{array} \\\\[-0.35em] ~\dotfill\\\\ ~~~~~~ \textit{Continuously Compounding Interest Earned Amount} \\\\ A=Pe^{rt}\qquad \begin{cases} A=\textit{accumulated amount}\dotfill & \$ 140\\ P=\textit{original amount deposited}\dotfill & \$70\\ r=rate\to r\%\to \frac{r}{100}\\ t=years\dotfill &5 \end{cases}\)
\(140 = 70e^{\frac{r}{100}\cdot 5} \implies \cfrac{140}{70}=e^{\frac{r}{20}}\implies 2=e^{\frac{r}{20}}\implies \log_e(2)=\log_e\left( e^{\frac{r}{20}} \right) \\\\\\ \log_e(2)=\cfrac{r}{20}\implies \ln(2)=\cfrac{r}{20}\implies 20\ln(2)=r\implies \boxed{13.86\approx r}\)
How to write 513,292 in expanded notation
Answer:
oh thats easy look so what you do is 500,000
13,000
1,000
200
90
Step-by-step explanation: 2
your welcome ^^
if 2/3x+1/2y=5 what is the value of 4x+3y
The
property of addition states that any number plus zero equals the other
number.
identity
commutative
Inverse
associative
Answer:
identity 4
Step-by-step explanation:
Solve the inequation x - 12 ≤ 3 - 2x and graph its solution.
Let's do these one-by-one.
The solution to x - 12 ≤ 3 - 2x is:
Answer:
Step-by-step explanation:
x - 12 ≤ 3 - 2x
3x ≤ 15
x ≤ 5
To graph this, just draw a VERTICAL line passing through x = 5, then shade the area to the LEFT
Algebra 2
Can you help me pls
Answer:
In50=3.912023005
Step-by-step explanation:
press it on your calculator
3,000 divided by 48 x 4
Answer:500 I hope this helpful
Step-by-step explanation:
3000 divided by 48 times 8
To make the calculation easier, first multiply the numbers that result in multiples of 10
24000 divided by 48
Divide the numbers
=500
Answer:
250
Step-by-step explanation:
If we follow the rules of PEMDAS, we go from left to right. Therefore, first, do 3,000 divided by 48.
3,000/48=62.5
Now, multiply 62.5 by 4.
62.5x4= 250
250 is your answer :D
Hope this helps and have a wonderful day!
add me
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The value οf the variable y is 9 when k is -3 in the given question.
What is variable?In mathematics and statistics, a variable is a quantity οr a characteristic that can take οn different values οr attributes. Variables can be classified as either quantitative οr categοrical, depending οn the type οf data they represent.
A quantitative variable is a variable that represents a numerical measurement οr quantity. Examples οf quantitative variables include height, weight, temperature, and incοme.
A categοrical variable is a variable that represents a grοup οr categοry. Examples οf categοrical variables include gender, race, and type οf car.
Given: y=k x
where, x= -3 and k= -3
we can find the value of y by multiplying k with x,
so, y=k x
now, putting values as follows:
we get, y = -3 × -3
= 9
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What is the solution to this inequality? 1/3x − 7>−4
Add 7 to both sides.
1/3x > −4 + 7Add −4 and 7 to get 3.
1/3x > 3Multiply both sides by 3, the reciprocal of 1/3 . Since 1/3 is >0, the direction of inequality remains the same.
x > 3 × 3Multiply 3 and 3 to get 9.
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Two pedestrians simultaneously left two villages 27 km apart and walked toward each other, meeting after 3 hours. The first pedestrian walked at a speed of 4 km per hour. At what speed (in km per h) did the second pedestrian walk?
The speed of the second pedestrian is 5 kilometers per hour.
At what speed did the second pedestrian walk?Let's say that the speed of the second pedestrian is S.
We know that the other pedestrian walks at a speed of 4km/h, and they (together) travel a distance of 27km in 3 hours, then we can write the linear equation:
(4km/h + S)*3h = 27km
It says that both pedestrians work, together, a total of 27km in 3 hours.
Now we can solve that linear equation for S, to do this, we need to isolate S in the left side of the equation.
4km/h + S = 27km/3h = 9 km/h
S = 9km/h - 4km/h = 5km/h
The speed of the second pedestrian is 5 kilometers per hour.
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Solve the system of equations y=x^2-3x+2
y=-9x-3
How do average speed, distance, and time all relate to each other?
A.
The time is equal to the distance divided by the average speed.
B.
The average speed is equal to the distance multiplied by the time.
C.
The time is equal to the distance multiplied by the average speed.
The average number of hours for a random sample of mail order pharmacists from company A was 50.1 hours last year. It is believed that changes to medical insurance have led to a reduction in the average work week. To test the validity of this belief, the hypotheses are
Answer:
The answer is "\(H_0:\mu \geq 50.1\ \ and \ \ H_0: \mu \geq 50.1\)"
Step-by-step explanation:
An initial random selection of mail-order physicians representing firm A worked an average of 50.1 hours per week. My goal is to reject the Null Hypothesis since it is employed to make no difference. In this case,\(H_0 =\mu \geq50.1\)
Medical insurance changes are attributed to reducing the average workweek. New medical coverage is claimed to be have reduced your average workday after the government change. \(H_1: \mu <50.1\)
Please Help
Solve for x.
3/5x+5=4/5
Enter your answer in the box.
X=
Answer:
x = -1/7
Step-by-step explanation:
3/5x + 5 = 4/5
3/5x + 5/1 = 4/5
3 + 25x/5x = 4/5
4(5x) = 5(3 + 25x)
20x = 15 + 125x
-15 = 125x - 20x
-15 = 105x
-15/105 = x
-1/7 = x
Please only answer if u actually know pls!
At a price of $3, the total revenue will be the greatest, and the company will sell 3 units at that price.
To find the total revenue at each price, we can multiply the price by the corresponding quantity.
Price Quantity Total Revenue
$6 0 $0
$5 1 $5
$4 2 $8
$3 3 $9
$2 4 $8
$1 5 $5
To find the price at which total revenue is the greatest, we look for the highest value in the Total Revenue column.
In this case, the highest total revenue is $9, which occurs when the price is $3.
At a price of $3, the company will sell 3 units (as indicated in the Quantity column).
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The sum of three consecutive even integers is 72 Letx represent the first integer, x + 2 represent the second integer, and x + 1
represent the third integer
Which equation can be used to find the first integer?
2x + 64 = 72
3x + 72 - 2x + 6
3x + 2x + 6
3x + 6 = 72
Answer:
3x+6=72
Step-by-step explanation:
1.st integer is x
2.nd is x+2
Thrd is x+4
So the sum is x+x+2+x+4=3x+6=72