At a grocery store, an uncooked beef roast is on sale for $4.99/lb. At the same store, prepared roast beef is at the deli for $2.99/100g. How many times more expensive is the deli roast compared to the uncooked roast?
f={(x,y)| y=x+3} find f(3.6) & f(-0.2)
Find all solutions in the interval [0, 2π). 7 tan^3x - 21 tan x = 0
To solve this problem, the first thing we can do is to take out 7 tan (x) from the whole equation, this results in simplification:
7 * tan (x) * (tan (x)^2 - 3) = 0
Therefore the initial roots are taken from:
tan (x) = 0
Calculating for x:
x = 0, pi
The other roots can be taken from:
(tan (x)^2 - 3) = 0
Calculating for x:
tan (x)^2 = 3
tan (x) = ± sqrt (3)
x = pi/3 , 2pi/3 , 4pi/3 , 5pi/3
Therefore the solutions are:
0 , pi, pi/3 , 2pi/3 , 4pi/3 , 5pi/3
Rachel has $100 in her savings account and deposits an additional $25 per week. joanna has $350 in her account and is saving $5 per week. after how many weeks will the two girls have the same amount of money?
Given the function f (x) = 10x + 4, find each of the following. f(8), f(-4), f (0)
f(8)=?
f(-4)=?
f(0)=?
There are 20 students on the school's student council. A special homecoming dance committee is to be formed by randomly selecting 7 students from student council. How many possible committees can be formed?
Final answer:
Using the combinations formula, there can be 77,520 different committees formed by selecting 7 students from a student council of 20 students.
Explanation:
To determine the number of possible committees that can be formed by selecting 7 students from a group of 20 students, we will use the combinations formula since the order of selection does not matter. This is a classic example of a combinatorial problem where we are choosing a subgroup from a larger group without regard to the order in which they are chosen.
The formula for combinations is as follows:
C(n, k) = n! / (k! * (n - k)!)
Where:
n is the total number of items,
k is the number of items to choose,
! indicates factorial, which means the product of all positive integers up to that number. For example, 5! = 5 x 4 x 3 x 2 x 1 = 120.
Applying this formula to our problem:
C(20, 7) = 20! / (7! * (20 - 7)!) = 20! / (7! * 13!) = (20 x 19 x 18 x 17 x 16 x 15 x 14) / (7 x 6 x 5 x 4 x 3 x 2 x 1)
After simplifying the factorial expressions and canceling out common factors, we find the number of possible committees that can be formed.
Therefore, there are 77520 possible committees that can be formed from a student council of 20 students by selecting 7.
Pick the geometric term that matches the real-word object: a lip-gloss tube.
Answer: Cylinder.
Step-by-step explanation: Lip-gloss tubes may have different shapes, but the usual form of a lip-gloss tube is, as the name says, a tube.
This means that it has a circular base and a circular top, and a given height that connects the base and the top, the geometrical shape that has this shape is called a cylinder.
The diagonals of a trapezoid are perpendicular and have lengths 8 and 10. find the length of the median of the trapezoid.
Final answer:
The length of the median of the trapezoid with perpendicular diagonals of lengths 8 and 10 is 9 units. This is calculated using properties of the median and the Pythagorean theorem.
Explanation:
The question you've asked regarding the median of a trapezoid with perpendicular diagonals of lengths 8 and 10 can be resolved by recognizing a property of the median in a trapezoid. The median (also known as the mid-segment) of a trapezoid is parallel to the bases and its length is equal to the average of the lengths of the bases. Since the diagonals are perpendicular, they would form right triangles with the two bases and the median line, dividing the trapezoid into four right triangles.
Let's denote the lengths of the bases as a and b, and the median as m. We know the diagonals intersect at their midpoints, thus splitting each into segments of lengths 4 and 5. Now we can form two right triangles sharing the median as a common side. Applying the Pythagorean theorem, we get two equations: m² + 4² = a² for the first right triangle and m² + 5² = b² for the second right triangle.
Since the median is the average of the bases, we have m = (a + b) / 2. Using the equations above, after some algebraic manipulations, we find that a² - b² = 16. With more manipulation, eventually, we find that (a - b)(a + b) = 16, and, since m is the average, 2m = a + b. Hence, we derive that 2m - b = (a - b), which simplifies to give us m = 9. This gives us the length of the median of the trapezoid as 9 units.
What is the value of theta , if tan theta = -1/squareroot3
Are the functions f(x) = (x^2-1)/(x-1) and g(x)= x+1 equal for all x?
what is the value of y?
Answer:
The correct option is D) 60°
Step-by-step explanation:
Consider the provided triangle.
From the provided figure it is given that one angle is 60° and we need to find the value of y.
As we know the sum of all interior angle in a triangle is 180°.
y°+y°+60°=180°
Now solve the above equation to find the value of y.
2y°+60°=180°
2y°=180°-60°
2y°=120°
y°=120°÷2
y°=60°
Hence, the value of y is 60°.
Thus, the correct option is D) 60°
I already answered this but I just want to make sure if I did it right
Marla swims twice a week. her equipment cost her $32.85 and she has a membership to the pool for $35 plus #3.50 per visit. she can walk to the pool, so transportation is free. how much will swimming cost her for the year?
Solve the triangle. B=36 a=41 c=20
In the triangle with B = 36°, a = 41, c = 20, b ≈ 45.3, C ≈ 29.5, A ≈ 114.5.
To solve the triangle, we can use the Law of Sines and the fact that the sum of angles in a triangle is 180 degrees.
Given:
[tex]- Angle \( B = 36° \)[/tex]
[tex]- Side \( a = 41 \)[/tex]
[tex]- Side \( c = 20 \)[/tex]
First, we need to find angle [tex]\( A \)[/tex]. We can use the fact that the sum of angles in a triangle is 180 degrees:
[tex]\[ A = 180 - B - C \][/tex]
We can find angle [tex]\( C \)[/tex] using the Law of Sines:
[tex]\[ \frac{\sin C}{c} = \frac{\sin B}{b} \][/tex]
Solving for [tex]\( C \):[/tex]
[tex]\[ \sin C = \frac{c \times \sin B}{b} \][/tex]
[tex]\[ \sin C = \frac{20 \times \sin 36°}{b} \][/tex]
[tex]\[ \sin C = \frac{20 \times 0.5878}{b} \][/tex]
[tex]\[ \sin C = \frac{11.756}{b} \][/tex]
Now we can find angle [tex]\( C \)[/tex] using the inverse sine function:
[tex]\[ C = \sin^{-1}\left(\frac{11.756}{b}\right) \][/tex]
Now, we can substitute [tex]\( C \) i[/tex]nto the equation for [tex]\( A \)[/tex] and solve for [tex]\( b \):[/tex]
[tex]\[ A = 180 - B - C \][/tex]
[tex]\[ A = 180 - 36 - \sin^{-1}\left(\frac{11.756}{b}\right) \][/tex]
[tex]\[ A = 144 - \sin^{-1}\left(\frac{11.756}{b}\right) \][/tex]
Since we know all three angles of the triangle, we can find [tex]\( b \)[/tex] using the Law of Sines again:
[tex]\[ \frac{\sin A}{a} = \frac{\sin B}{b} \][/tex]
[tex]\[ \sin A = \frac{a \times \sin B}{b} \][/tex]
[tex]\[ \sin A = \frac{41 \times \sin 36}{b} \][/tex]
[tex]\[ \sin A = \frac{41 \times 0.5878}{b} \][/tex]
[tex]\[ \sin A = \frac{24.0678}{b} \][/tex]
Now, we can find [tex]\( b \)[/tex] using the inverse sine function:
[tex]\[ b = \frac{24.0678}{\sin A} \][/tex]
Finally, we'll use the given values and calculate the closest option:
[tex]\[ A \approx 144 - \sin^{-1}\left(\frac{11.756}{b}\right) \][/tex]
[tex]\[ b \approx \frac{24.0678}{\sin A} \][/tex]
[tex]\[ c \approx 20 \][/tex]
B = 36°
[tex]\[ a = 41 \][/tex]
After the calculation, the closest option is:
[tex]\[ b \approx 45.3, \ C \approx 29.5, \ A \approx 114.5 \][/tex]
Complete Question:
Solve the triangle.
B = 36°, a = 41, c = 20
choices:
b ≈ 27.5, C ≈ 115.5, A ≈ 28.5
b ≈ 45.3, C ≈ 25.5, A ≈ 118.5
b ≈ 45.3, C ≈ 29.5, A ≈ 114.5
b ≈ 27.5, C ≈ 25.5, A ≈ 118.5
Find the angular size of a circular object with a 3-inch diameter viewed from a distance of 4 yards.
Final answer:
To determine the angular size of an object with a diameter of 3 inches from 4 yards away, one can use the formula θ = d / D to calculate θ in radians, which is then converted to degrees, resulting in an angular size of approximately 1.19°.
Explanation:
To find the angular size of a circular object with a 3-inch diameter viewed from a distance of 4 yards, one can use the following formula for angular size θ (in radians): θ = d / D, where d is the diameter of the object and D is the distance to the object.
First, we convert the diameter and the distance to the same units. There are 36 inches in a yard, so 4 yards is 144 inches:
Diameter (d): 3 inchesDistance (D): 4 yards = 144 inchesThen, we calculate the angular size in radians:
θ = d / D = 3 inches / 144 inches = 0.0208333...
This can be converted to degrees by multiplying with 180/π:
θ(in degrees) = 0.0208333... * (180/π) = 1.19° (approximately).
Thus, the angular size of the object is approximately 1.19° when viewed from a distance of 4 yards.
help plzzzzzzzz this is hard
Answer:
A is correct!
Step-by-step explanation:
If y varies directly as x, and y is 48 when x is 6, which expression can be used to find the value of y when x is 2?
Answer:
An expression can be used to find the value of y when x is 2 is,
y=8x ; Value of y = 16 when x = 2
Step-by-step explanation:
Direct variation states:
If y varies directly as x
⇒[tex]y \propto x[/tex]
then the equation is in the form of:
[tex]y = kx[/tex] where, k is the constant of variation.
As per the statement:
If y varies directly as x, and y is 48 when x is 6.
⇒[tex]y = kx[/tex]
y = 48 when x = 6
Substitute the given values in [1] and solve for k we have;
[tex]48= 6k[/tex]
Divide both sides by 6 we have;
8 = k
or
k = 8
Then, an equation we have;
y =8x ....[2]
We have to find value of y when x is 2.
Substitute the value of x = 2 in [2] we have;
[tex]y = 8(2) = 16[/tex]
Therefore, an expression can be used to find the value of y when x is 2 is,
y=8x and Value of y = 16 when x = 2
If a line has a slope of 2 and contains the point (-2, 1), what is its equation in point-slope form?
Three subtracted from x is less than or equal to -17
Let log p/n=6 and log m/n=8 what is the relationship between p and m?
Given the logarithmic equations, it can be deduced that m is 100 times greater than p, assuming n>0 which is not zero to avoid division by zero and it is positive as logarithm is undefined for negative numbers.
Explanation:The question asks to find the relationship between p and m given two log equations. Using the rule of logarithms The logarithm of the number resulting from the division of two numbers is the difference between the logarithms of the two numbers (also known as the quotient rule), we can work out the relationship.
Given that log p/n = 6, it can be rearranged in exponential form: p = 106*n. And log m/n = 8 can be rewritten as m = 108*n.
Therefore, the relationship between p and m is that m is 100 times p, assuming n>0.
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In attachment, help please 1 QUESTION, BRAINLIEST GETS 20 PTS
Answer:
Above is the right answer he got here first so give him brainiest
Three different circles and one line intersect each other.What is the largest possible number of intersection points
The largest possible number of intersection points between three different circles and one line is 12. This is calculated by considering that a line can intersect each circle at two points and each pair of circles can intersect at two points.
Calculating the Maximum Number of Intersection Points
To determine the largest possible number of intersection points between three different circles and one line, we can analyze the intersections one circle can have with a line and with another circle. A line can intersect a circle at most at two points - where it enters and exits the circle. Therefore, one line can intersect three circles at a maximum of 2 points per circle, totaling 6 points for the line intersections.
As for circle to circle intersections, each pair of circles can intersect at most at two points. With three circles, we can form three distinct pairs (Circle 1 with Circle 2, Circle 1 with Circle 3, and Circle 2 with Circle 3). Each pair can contribute up to 2 points of intersection, which gives us 6 points for the circle intersections.
Combining both types of intersections, we have a total possible number of intersections of 6 (from the line) + 6 (from the circles) = 12. Therefore, the maximum number of intersection points is 12.
Find the missing term. If y = 1 + i, then y3 − 3y2 + (-3y) (-3y + 1) (3y) (3i ) − 1 = -i .
Answer:3y is the answer
Step-by-step explanation:
Please solve. best answer gets rewarded! show step by step.
Marijuana contains _____________ more carcinogens than cigarettes.
a. 20–30%
b. 40–60%
c. 50–70%
d. 60–80%
The length of a rectangle is 11 ft less than three times the width, and the area of the rectangle is 70 ft2 . find the dimensions of the rectangle.
The width and length of the rectangle is 7ft and 10 feet respectively.
What are the area and perimeter of a rectangle?We know the perimeter of any 2D figure is the sum of the lengths of all the sides except the circle and the area of a rectangle is the product of its length and width.
Given, The length of a rectangle is 11 ft less than three times the width has an area of 70ft².
Assuming the width of the rectangle to be x ft, therefore the length of the rectangle is (3x - 11) ft.
We know the Area of a rectangle (A) = length×width.
∴ x.(3x - 11) = 70.
3x² - 11x = 70.
3x² - 11x - 70 = 0.
3x² - 21x + 10x - 70 = 0.
3x(x - 7) + 10(x - 7) = 0.
(x - 7)(3x + 10) = 0.
x - 7 = 0 Or 3x + 10 = 0.
x = 7 Or x = - 10/3.
A negative value of x is inadmissible here as length cannot be negative.
So, the width of the rectangle is 7 ft and the length of the rectangle is
10 ft.
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Alexandra Romar has a previous balance at Porter Pharmacy of $68.42. She had payments and credits of $18.25. The monthly finance charge is 1.85% of the unpaid balance. After the finance charge was calculated, she made $34.00 in new purchases. What is her new balance?
Answer:
Her new balance is $85.10.
Step-by-step explanation:
Alexandra Romar has a previous balance at Porter Pharmacy = $68.42
She had payments and credits = $18.25
Now the unpaid balance = 68.42 - 18.25 = $50.17
The monthly finance charge on unpaid balance = 1.85% × 50.17
= [tex]\frac{1.85}{100}[/tex] × 50.17
= 0.928145 ≈ $0.93
So the balance with finance charge = 50.17 + 0.93 = 51.10
She made a new purchase = $34.00
Her new balance = 51.10 + 34.00 = $85.10
Her new balance is $85.10.
Rectangle 800 feet long and 700 feet wide. if fencing costs $13 per yard, what will it cost to place fencing around the playground
The point P(12, 16) is on the terminal side of θ. Evaluate tan θ.
Answer:
tan(θ)=4/3
Step-by-step explanation:
Since opposite leg of the reference triangle equals 16 and the adjacent leg equals 12, tan(θ)=16/12 simplified to tan(θ)=4/3.
An increase in the money supply that causes money to lose its purchasing power and prices to rise is known as______________
Answer: An increase in the money supply that causes money to lose its purchasing power and prices to rise is known as Inflation.
Inflation means an increase in the money supply that causes money to lose its purchasing power and prices to rise.
As in case of inflation situation, prices get rise because of increase in the money supply to reduce the purchasing power of the individual or firms.
Measures to rectify the inflation :
1) Fiscal expenditure
2) Revenue expenditure
3) Reduction in deficit financing
Hence, Inflation is the correct answer.