Katie needs 9.5 quartz of the 12% sugar solution to make the 10% sugar solution.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
The volume of the 12% sugar solution required, 'X' for a given volume of the 8% sugar solution, 'Y' is;
X = (2·Y + 15)/2
When the volume of the 8% sugar solution, Y = 2 quartz, the volume of the 12% sugar solution required, X = 9.5 gallons
The data of the sugar solutions are;
The volume of 5% sugar solution Kate has = 3 quarts
The volume of the 12% sugar solution = X
Let 'Y' represent the volume of the 8% sugar solution, we have;
The volume of the resultant solution, Z = X + Y + 3
The concentration of the resultant solution = 10%
0.05 × 3 + 0.08·Y + 0.12·X = 0.1·(X + Y + 3)
Solving gives the relationship between the volume of the 12% sugar solution, 'X', and the 8% sugar solution, 'Y' in quartz, as follows;
X = (2·Y + 15)/2
When the volume of the 8% sugar solution, Y = 2 quartz, we have;
X = (2 × 2 + 15)/2 = 9.5 Quartz
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2nd term in expansion of (3y + x)3
Answer:
9y+3x
Step-by-step explanation:
according to the world health organization (who) child growth standards, the head circumference for boys at birth has a normal probability distribution with a mean of 34.5cm and a standard deviation of 1.3cm. what is the head circumference of a newborn boy who marks the start of the 75th percentile? enter a number without units.
The head circumference of a newborn boy who marks the start of the 75th percentile is approximately 35.38 cm.
To find the head circumference of a newborn boy who marks the start of the 75th percentile, we need to first find the z-score corresponding to the 75th percentile using the standard normal distribution.
The z-score formula is
z = (x - μ) / σ
where x is the observed value, μ is the mean, and σ is the standard deviation.
To find the z-score that corresponds to the 75th percentile, we need to look up the z-score associated with a cumulative area of 0.75 under the standard normal distribution curve. This value can be found using a table or calculator and is approximately 0.674.
Now we can use the formula for the z-score to solve for the head circumference of a newborn boy at the 75th percentile
z = (x - μ) / σ
0.674 = (x - 34.5) / 1.3
0.674 × 1.3 = x - 34.5
0.8762 + 34.5 = x
x = 35.3762
x ≈ 35.38 cm
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Lisa earned $31 each week delivering newspapers she delivered newspapers for 2 weeks.How much money did Lisa earn two weeks?
Answer: she earns $62 in two weeks
Step-by-step explanation:
Lisa gets 31 dollars a week for 2 weeks so all you have to do is multiply 31 x 2. If you did all of those correctly you would get $62 for your answer.
-4/11 + -2/3 - -5/9 solution with butterfly method
The solution using the butterfly method is -141/297
How to determine the valueUsing the butterfly method, we have that the steps for adding fractions are;
Multiply the numerators and denominators diagonally.Add the product of the diagonal pairs of numerators and denominators together. This creates the new numerator.Multiply the denominators by each other.Simplify the fraction if possible.From the information given, we have that;
-4/11 + -2/3 - -5/9
-4/11 - 2/3 + 5/9
Add the values, we have;
-4/11 + 5/9 - 2/3
Multiply the numerators
-36 + 55/99
19/99 - 2/3
57 - 198/297
Subtract the values
-141/297
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(a) Write down the lift equation.
(b) For each variable you have written down, explain how this
can affect the lift?
(c) How each variable be changed during a flight?
The lift equation provides a mathematical representation of the factors influencing lift. By understanding the variables in the lift equation and their effects, aircraft designers and pilots can optimize flight performance by adjusting variables such as the angle of attack, altitude, and velocity to achieve the desired lift characteristics for safe and efficient flight.
- Lift (L): Lift is the force generated by an airfoil or wing as a result of the pressure difference between the upper and lower surfaces of the wing.
- Coefficient of Lift (Cl): The coefficient of lift represents the lift characteristics of an airfoil or wing and is dependent on its shape and angle of attack.
- Air Density (ρ): Air density is a measure of the mass of air per unit volume and is affected by factors such as altitude, temperature, and humidity.
- Wing Area (A): Wing area refers to the total surface area of the wing exposed to the airflow.
- Velocity (V): Velocity is the speed of the aircraft relative to the air it is moving through.
- Coefficient of Lift (Cl): The shape of an airfoil or wing, as well as the angle of attack, affects the coefficient of lift. Changes in these variables can alter the lift generated by the wing.
- Air Density (ρ): Changes in air density, which can occur due to changes in altitude or temperature, directly affect the lift. Decreased air density reduces lift, while increased air density enhances lift.
- Wing Area (A): The size of the wing area affects the amount of lift generated. A larger wing area provides more surface for the air to act upon, resulting in increased lift.
- Velocity (V): The speed of the aircraft affects lift. As velocity increases, the lift generated by the wing also increases.
Changes During Flight:
During a flight, these variables can be changed through various means:
- Coefficient of Lift (Cl): The angle of attack can be adjusted using the aircraft's control surfaces, such as the elevators or flaps, to change the coefficient of lift.
- Air Density (ρ): Air density changes with altitude, so flying at different altitudes will result in different air densities and affect the lift.
- Wing Area (A): The wing area remains constant during a flight unless modifications are made to the aircraft's wings.
- Velocity (V): The velocity can be controlled by adjusting the thrust or power output of the aircraft's engines, altering the aircraft's speed.
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Help me, please! It's for math hw
Of the 120 rooms in a hotel, 55% are single-bed rooms, 30% are double-bedrooms, and the rest are deluxe rooms. How many deluxe rooms are there?
There are 18 deluxe rooms in the hotel.
To find the number of deluxe rooms in the hotel, we need to calculate the percentage of rooms that are deluxe.
The percentage of single-bed rooms is 55%, and the percentage of double-bedrooms is 30%. Therefore, the percentage of deluxe rooms can be calculated as:
Percentage of deluxe rooms = 100% - (Percentage of single-bed rooms + Percentage of double-bedrooms)
= 100% - (55% + 30%)
= 100% - 85%
= 15%
So, 15% of the total rooms in the hotel are deluxe rooms.
To determine the number of deluxe rooms, we can multiply the total number of rooms by the percentage of deluxe rooms:
Number of deluxe rooms = 15% of 120 rooms
= (15/100) * 120
= 0.15 * 120
= 18
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Which classification describes the following system of equations? inconsistent and dependent consistent and dependent consistent and independent inconsistent and independent.
The system of equations is consistent and independent and the solutions are x = 4, y = 5, and z = -1 option third is correct.
What is a linear equation?It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.
If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.
The question is incomplete.
The complete question is in the picture, please refer to the attached picture.
We have three linear equations in three variables:
x - y - z = 0 ..(1)
2x - y + 2z = 1 ..(2)
x - y + z = -2 ..(3)
From the equation (1):
\(\rm x=y+z\)
Plug this value in the equation (2) and (3):
\(\rm 2\left(y+z\right)-y+2z=1\\\\ y+z-y+z=-2\)
After solving we get:
z = -1
y = 5
Plug the above two values in equation (1) we get:
x = 4
Thus, the system of equations is consistent and independent and the solutions are x = 4, y = 5, and z = -1 option third is correct.
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498,147,846,267
+ 32,870,714,538
Answer:
531018560805
Step-by-step explanation:
(-2.655)times(18.44)
-48.95820 is the result of the products of the decimal numbers (-2.655) and (18.44).
How to multiply decimal numbers?Given the data in the question;
(-2.655) multiply by (18.44)
First, we determine the total decimal places in the numbers.
We have 5.
Next, we ignore the decimal places and carry out the multiplication operation as if operating on two integers.
- 2 6 5 5
× 1 8 4 4
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
+ 1 0 6 2 0
+ 1 0 6 2 0
+ 2 1 2 4 0
+ 2 6 5 5
⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻⁻
= - 4 8 9 5 8 2 0
Now, rewrite the result of the product with the 5 total decimal places.
= -48.95820
Therefore, the result of the multiplication operation is -48.95820.
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In two expressions if the first expression divides the second expression exactly, which expression is the HCF of the expressions
In this scenario, the first expression is the HCF of the two expressions.
If the first expression divides the second expression exactly, then the first expression is a factor of the second expression.
The highest common factor (HCF) of two numbers is the largest number that is a factor of both numbers.
Since the first expression is a factor of the second expression, then the first expression is the HCF of the two expressions.
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An enclosure at a zoo contains giraffes and ostriches. All together the zookeeper counts 70 heads and 200 legs. How many of each animal are there?
By solving equations we know that there are 30 giraffes and 40 ostriches in the zoo.
A mathematical statement known as an equation is made up of two expressions joined by the equal sign.
A formula would be 3x - 5 = 16, for instance.
When this equation is solved, we discover that the number of the variable x is 7.
So, calculate as follows:
Let g represent giraffes and o represent ostriches.
g + o = 70 ...(1)
4*g + 2*o = 200 ...(2)
g = 70 - o, according to equation 1, therefore we may enter that number in place of g in equation 2 to obtain:
4*g + 2*o = 200
4*(70-o) + 2*o = 200
280 - 4o + 2o = 200
-2o = 200 - 280
2o = 80
o = 80/2
o = 40
Ostriches are 40 then giraffes will be:
70 - 40 = 30
Therefore, by solving equations we know that there are 30 giraffes and 40 ostriches in the zoo.
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help i'll give brainlesttt
Answer: x=4
Step-by-step explanation:
G(4) = 4x4 +3
G(4) = 16 + 3
G(4) = 19
a 60-year-old female is diagnosed with hyperkalemia. which symptom would most likely be observed?
Hyperkalemia is a medical condition that refers to an elevated level of potassium in the blood.
This condition can be caused by several factors, including kidney disease, certain medications, and hormone imbalances. Symptoms of hyperkalemia can range from mild to severe, depending on the level of potassium in the blood.
In a 60-year-old female diagnosed with hyperkalemia, the most likely symptom that would be observed is muscle weakness. This is because high levels of potassium can interfere with the normal functioning of muscles, leading to weakness, fatigue, and even paralysis in severe cases.
Other symptoms that may be observed in hyperkalemia include nausea, vomiting, irregular heartbeat, and numbness or tingling in the extremities. Treatment of hyperkalemia typically involves addressing the underlying cause of the condition, as well as managing symptoms through medication and lifestyle changes.
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Explain why a+b+c=240degrees
Answer: The equation a+b+c=240 degrees is not true for any triangle, since the sum of the angles of a triangle is always 180 degrees. However, it could be true for a quadrilateral, which has four angles. One way to explain why a+b+c=240 degrees is to use the fact that opposite angles of a cyclic quadrilateral (a quadrilateral that can be inscribed in a circle) are supplementary, meaning they add up to 180 degrees. If we label the opposite angle of c as d, then we have c+d=180 degrees. Subtracting c from both sides, we get d=180-c. Then, adding a+b to both sides, we get a+b+d=240-c+c, which simplifies to a+b+c=240 degrees. Another way to explain why a+b+c=240 degrees is to use the fact that an exterior angle of a triangle is equal to the sum of the opposite interior angles. If we extend one side of the triangle and label the exterior angle as e, then we have e=a+b. Then, adding c to both sides, we get e+c=a+b+c. Since e+c is an exterior angle of another triangle formed by extending the side, it is equal to 180 degrees. Therefore, we have 180=a+b+c, which implies that a+b+c=240 degrees.
NEED HELP URGENT
What is the slope of the line shown below?
A little note to eliminate the answer choices, The line you see will have a Positive slope because it is facing the positive sign. This can eliminate the Answer choices C and d
To solve the slope, the formula is
Change of Y/ Change of X In this problem the Formula will be
8-2/ 5-(-7) if we plug in our numbers
Solve this step by step
8-2 is 6, 5-(-7 is 12. (Since Negative and Negative together is positive)
Our new slope is 6/12 wich is equal to 1/2
Thefore the answer is 1/2
I hope this helped.
Ps. Brianlistes would really help
Answer:
A. 1/2
Step-by-step explanation:
Find the change in y over the change in x.
\(m=\frac{y_2-y_1}{x_2-x_1}\\\\m=\frac{8-2}{5-(-7)}\\\\m=\frac{6}{12}\\\\m=\frac{1}{2}\)
A smartphone costs $250. Sale tax is 6%. What is the total cost, including tax?
John has a jar filled with juice. After he poured 350 ml of juice in each 8
glasses he was still left with 200 ml juice in the jar. What was the capacity
of jar in liters?
Answer:
Step-by-step explanation:
If there were 8 glasses of juice, and 350 ml was poured into each glass, then the total amount of juice poured into the glasses would be 8 x 350 = 2800 ml.
After pouring this much juice, John was still left with 200 ml juice in the jar.
Therefore, the capacity of the jar would be the total amount of juice poured into the glasses plus the amount remaining in the jar, which is 2800 ml + 200 ml = 3000 ml.
To convert this volume to liters, we can divide by 1000. Therefore, the capacity of the jar in liters would be 3000 ml / 1000 = 3 liters.
So, the capacity of the jar is 3 liters.
If you go out to eat with 4 friends and your meal was $95.80, there is 8.25% sales tax and you should tip the waiter 15%. How much should each person pay?
Tax
Total meal cost
Tip
Total cost of meal with tip
Price for each person
Answer:
Thing is rate this full stars then I will tell you
Step-by-step explanation:
Be a kind soul and help me out please
well, for the piece-wise function, we know that hmmm x = -1, -1 is less 1, so the subfunction that'd apply to that will be -2x + 1, because on that section "x is less than or equals to 1".
so f(-1) => -2(-1) + 1 => 3.
Answer:3
Step-by-step explanation:
In this case x=-1 so you will use the top equation because x<1
so f(-1) = -2(-1) + 1
= 2+1
=3
WILL MARK BRAINLIEST IF CORRECT!
Two experiments are conducted to determine the mass of an object.
-In Experiment 1, you place the object on an electronic balance and read the object's weight.
-In Experiment 2, you apply a constant force to pull the object along a horizontal surface, while using a motion detector to measure the object's speed as it is pulled.
All frictional forces for both experiments are considered to be negligible. Which of the two experiments, if either, could be used to determine the gravitational mass of the object?
a. Experiment 2 only
b. Experiment 1 only
c. Neither experiment
d. Both experiments
Answer:
b I think is the right answer.
A cashier has a total of 30 bills, consisting entirely of $1 bills, $5 bills, and $20 bills. The total dollar amount of these bills is $351. There are nine more $20 bills that $1 bills. How many of each bill denomination are there?
Answer:
Five= 9 One= 6 Twenty= 15
Step-by-step explanation:
A cashier has a total of 30 bills, made up of ones, fives, and twenties.
o+f+t=30,
The number of twenties is 9 more than the number of ones.
t=9+o,
The total value of the money is $351.
o+5f+20t=351
so we have
o+f+t=30, t=9+o,
o+5f+20t=351
f = 9, o = 6, t = 15
if 11/8/2021 is a saturday, what value will =weekday(11/8/2021) return?
If 11/8/2021 is a Saturday, the value returned by the function "weekday(11/8/2021)" would likely be 6, assuming a common numbering convention where weekdays start with Sunday as 1 and end with Saturday as 7.
The function "weekday" returns the day of the week for a given date. In this case, if 11/8/2021 is a Saturday, the value returned by "weekday(11/8/2021)" will depend on the specific programming language or software being used.
However, assuming a common convention where weekdays are represented by numbers (Sunday as 1, Monday as 2, and so on), the function would likely return the value 6.
This is because in many programming languages, the numbering convention for weekdays starts with Sunday as 1 and ends with Saturday as 7. Therefore, if 11/8/2021 is a Saturday, it would correspond to the sixth day of the week, resulting in a return value of 6.
It's important to note that the specific implementation and behavior of the "weekday" function may vary depending on the programming language or software framework being used, so it's always recommended to consult the documentation or specific guidelines for accurate results.
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What are the coordinates of the point (-1, 6) after a reflection across the x-axis?
A.(1,-6)
B.(-1, -6)
C. (-1, 6)
D. (1,6)
Answer:
B(-1,-6)
Step-by-step explanation:
reflecting reflecting over the x axis changes the y outputs.
Answer:
B (-1,-6)
Step-by-step explanation:
this may help you
(x,y) across the x is (x,-y)
(-x,y) across the x is (-x,-y) as your question
Write a ratio in three different forms.
Shawn biked 5 miles and ran 2 miles. What is the ratio of the distance Shawn ran to the distance he biked?
Answer:
2:5 is the answer
Step-by-step explanation:
Why is because it says What is the ratio of the distance Shawn ran to the distance he biked shawn ran 2 miles the ratio is 2: and comparing how he rode 5 miles is 2:5
Answer:
2:5
Step-by-step explanation:
im in k12 LOL
Make x the subject of the formula x − p = t
Answer:
x=t+p
Step-by-step explanation:
x-p=t
x=t+p
line v has an equation of y=10/9x +1. Line w includes the point (-3,3) and is perpendicular to line v. What is the equation of line w?
Answer:
y = -9/10x + 3/10 or y = 3/10(1 - 3x)
Step-by-step explanation:
Perpendicular lines have slopes that are negative reciprocals of one another
so slope of line w is -9/10
Using (-3,3) >> y = -9/10x + b
3 = -9/10(-3) + b
3 = 27/10 + b
b = 3 - 27/10 = 30/10 - 27/10 = 3/10
y = -9/10x + 3/10 or y = 3/10(1 - 3x)
The equation of the line w will be y = -9/10x + 3/10 or y = 3/10(1 - 3x).
What is an equation of the line?An equation of the line is defined as a linear equation having a degree of one. The equation of the line contains two variables x and y. And the third parameter is the slope of the line which represents the elevation of the line.
The general form of the equation of the line:-
y = mx + c
m = slope
c = y-intercept
Slope = ( y₂ - y₁ ) / ( x₂ - x₁ )
Perpendicular lines have slopes that are negative reciprocals of one another
The slope of line w is -9/10
Using (-3,3) >> y = -9/10x + b
3 = -9/10(-3) + b
3 = 27/10 + b
b = 3 - 27/10 = 30/10 - 27/10 = 3/10
y = -9/10x + 3/10 or y = 3/10(1 - 3x)
Therefore, the equation of the line w will be y = -9/10x + 3/10 or y = 3/10(1 - 3x).
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Solve 19+ 6w = 67
W =
Watch video
Answer:
w = 8
Step-by-step explanation:
Solve 19+ 6w = 67
W =?
19 + 6w = 67
6w = 67 - 19
6w = 48
w = 48 : 6
w = 8
----------------------------
check
19 + 6 x 8 = 67
19 + 48 = 67
67 = 67
the answer is good
Find the derivative of 3x/cosx
The derivative of the function 3x/cos(x) is (3cos(x) + 3xsin(x))/cos^2(x).
The function 3x/cos(x) using the terms you've mentioned.
1. First, recognize that the function is a quotient of two functions: f(x) = 3x and g(x) = cos(x).
2. Apply the Quotient Rule for differentiation, which states that if h(x) = f(x)/g(x), then h'(x) = (f'(x)g(x) - f(x)g'(x))/g^2(x).
3. Find the derivatives of the functions f(x) and g(x). For f(x) = 3x, the derivative f'(x) is 3. For g(x) = cos(x), the derivative g'(x) is -sin(x).
4. Now, apply the Quotient Rule using the derivatives you found: h'(x) = (3cos(x) - 3x(-sin(x)))/cos^2(x).
5. Simplify the expression: h'(x) = (3cos(x) + 3xsin(x))/cos^2(x).
So, the derivative of the function 3x/cos(x) is (3cos(x) + 3xsin(x))/cos^2(x).
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F
9
Use >, <, or = to solve
the inequality below.
5.7 ____ 5.77
Answer:
5.7<5.77
Step-by-step explanation: 5.7 is the same as 5.70, so we look at the hundreths spot and because 0.00 is less than 0.07 we give the ansewr to be 5.70<5.77