Answer:
The density of silver is 10.49 g/cm3.
Step-by-step explanation:
Physical properties are those that can be observed without any change in the identity of the element in question. In this case, the physical property that is mentioned is density. Other examples include color and hardness. On the other hand, chemical properties describe how a substance can change into a different substance. This would include characteristics such as flammability and corrosion resistance.
If 0.5 lb of Starbucks Coffee costs $6.48, what is the unit price for Starbucks Coffee? Hint: this involves decimal division.
The unit price of Starbucks Coffee, when 0.5 lb costs $6.48, is calculated by dividing the total cost by the pounds, resulting in $12.96 per pound.
Explanation:If 0.5 lb of Starbucks Coffee costs $6.48, to find the unit price for Starbucks Coffee, we perform a simple division. You want to know how much 1 lb would cost, given that 0.5 lb costs $6.48. To do this, you divide the total cost by the number of pounds.
$6.48 ÷ 0.5 = $12.96 per pound
This means that the unit price of Starbucks Coffee, when given a price of $6.48 for a half-pound, is $12.96 per pound. This calculation is crucial in understanding how to break down costs into more manageable, standard units, making price comparisons easier and more straightforward.
One side of a right triangle is known to be 9 cm long and the opposite angle is measured as 30°, with a possible error of ±1°. (a) use differentials to estimate the error in computing the length of the hypotenuse. (round your answer to two decimal places.)
To estimate the error in the hypotenuse length of a right triangle using differentials, we use the trigonometric identity sin(θ) = opposite/hypotenuse, finding the derivative, and then apply the angle error to get an error estimate of
±0.31 cm in the hypotenuse length.
The question asks to use differentials to estimate the error in computing the length of the hypotenuse of a right triangle when one side is 9 cm and the opposite angle is 30° with a possible error of ±1°. To calculate the hypotenuse (c) when dealing with problems involving right triangles, you can use the trigonometric identity sin(θ) = opposite/hypotenuse, which can be rearranged to c = opposite/sin(θ). The differential of c with respect to θ is dc/dθ = -opposite * cos(θ)/sin2(θ). Given that the opposite side is 9 cm and the angle θ is 30°, we can find dc/dθ and then multiply by the possible angle error of ±1° to estimate the error in the hypotenuse length.
Plugging in the given values and converting the angle to radians (since the derivative is taken with respect to radians), we find
dc/dθ ≈ -9 cm × cos(30°)/sin2(30°) ≈ -18 cm.
The possible change in angle is ±1°, which in radians is approximately ±0.0175 radians, thus
Estimated error in hypotenuse ≈ -18 cm × ±0.0175 ≈ ±0.315 cm.
Therefore, the estimated error in the length of the hypotenuse, rounded to two decimal places, is ±0.31 cm.
The radius of a circle is increasing at a rate of 3 cm per minute. find the rate of change of the area when
Two triangles have side lengths 3, 4, 5 and 6, 8, 10, respectively. The triangles are similar to each other.
The missing side length of the second triangle is 8.
To find the missing side length of the second triangle, we can use the property that similar triangles have proportional side lengths.
Given:
First triangle: ( 3, 4, 5 )
Second triangle: ( 6, x, 10 )
Since the triangles are similar, the ratios of corresponding sides are equal:
[tex]\[ \frac{6}{3} = \frac{x}{4} = \frac{10}{5} \][/tex]
From the first ratio, [tex]\( \frac{6}{3} = \frac{x}{4} \)[/tex], cross multiply:
[tex]\[ 6 \times 4 = 3 \times x \][/tex]
[tex]\[ 24 = 3x \][/tex]
Divide both sides by 3 to solve for ( x ):
[tex]\[ x = \frac{24}{3} \][/tex]
[tex]\[ x = 8 \][/tex]
So, the missing side length of the second triangle is 8.
Here's a detailed calculation step-by-step:
1. Set up the ratios of corresponding sides: [tex]\( \frac{6}{3} = \frac{x}{4} = \frac{10}{5} \).[/tex]
2. Use the first ratio to find [tex]\( x \): \( 6 \times 4 = 3 \times x \)[/tex].
3. Solve for [tex]\( x \): \( 24 = 3x \)[/tex].
4. Divide both sides by 3: [tex]\( x = \frac{24}{3} = 8 \)[/tex].
5. Therefore, the missing side length of the second triangle is 8.
Complete Question:
Two triangles have side lengths 3, 4, 5 and 6, _____, 10, respectively. The triangles are similar to each other. Find the missing side of the triangle.
Makayla's local movie theater has a moviegoer club that charges an annual registration fee of 25 dollars.However, movie tickets are discounted for members at 6 dollars per ticket, instead of 9 dollars per ticket.Let m equal the number of movie tickets Makayla purchases in a year. Write a function to model the amount of money Makayla spent going too the movies during the year she joined the club. C(m)=6x+25 The domain is best represented by: A)integers B)whole numbers C)rational numbers D)real numbers Algebra chestercat
Approximate to pi 13.0909091
What is the value of the expression
–180
–5
5
24
Sue uses the expression ( 8 x 3,000) + ( 8 x 200) + (8 x 9) to help solve a multiplucation problem what is Sue's multiplucation problem?
Answer:
Sues problem would be - 8×3,209 :8×3,209
What is the equation of the line tangent to the curve xy=4 at (2,2)?
Hour truck can carry a 3/4 ton load. Each brick weighs 4 lbs and 14 oz. How many bricks can the truck carry
Where does the graph of the linear equation, y = 1/2 x - 3, cross the y-axis?
negative 2 is where it crosses
Which number sentence shows the correct placement of the decimal point in the product, based on the two factors?
7.98 × 45.67 = 3,644.466
12.3 × 3.8 = 467.4
0.45 × 2.3 = 1.035
14.22 × 2.8 = 398.16
Answer:
Option 3 - [tex]0.45\times2.3= 1.035[/tex]
Step-by-step explanation:
To find : Which number sentence shows the correct placement of the decimal point in the product, based on the two factors?
Solution :
The correct placement of decimal in product is based on the number of digits after decimals as the number of digits after decimal of one number added to number of digits after decimal of second number is the required place in the result a decimal place.
1) [tex]7.98\times 45.67 = 3,644.466[/tex]
Not correct, decimals are 4 so place after 4 numbers.
2) [tex]12.3\times3.8= 467.4[/tex]
Not correct, decimals are 2 so place after 2 numbers.
3) [tex]0.45\times2.3= 1.035[/tex]
Correct, decimals are 3 so place after 3 numbers.
4) [tex]14.22\times2.8= 398.16[/tex]
Not correct, decimals are 3 so place after 3 numbers.
Therefore, option 3 is correct.
Help please!! 20 points and brainliest!!
solve the system of linear equations. separate the x- and y- values with a coma. -9x+6y=-30
-12x+9y=-30
how many liters of a 20% acid solution must be mixed with a 50% acid solution to obtain 12 liter of a 30% solution?
Solve -2 (x+5)=1/4(x-10)
Consider the solid shaped like an ice cream cone that is bounded by the functions z=x2+y2‾‾‾‾‾‾‾√ and z=50−x2−y2‾‾‾‾‾‾‾‾‾‾‾‾√. set up an integral in polar coordinates to find the volume of this ice cream cone.
To calculate the volume of a solid bounded by two functions, set up an integral in polar coordinates. The volume is found by integrating the difference of the two volumes described by the functions (50 - sqrt(x²+y²) - sqrt(x²+y²)) over r, θ, and z within their appropriate limits.
Explanation:The subject of the question is mathematics, more specifically, integral calculus in spherical or polar coordinates. Calculating the volume of a solid bounded by two functions can be done by taking the difference of the two function volumes.
The integrals, using polar coordinates (r and θ), are set up as follows:
Volume = ∫∫∫(50 - sqrt(x²+y²) - sqrt(x²+y²)) r dr dθ dz,
where the limits for r are [0, sqrt(50)], for θ are [0, 2π], and for z are [0, 50]. Also, note that 'x²+y²' is replaced with 'r²' because in polar coordinates, 'r' represents the square root of x^2 plus y^2.
This integral, when solved, gives the volume of the ice cream cone-shaped solid.
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The volume of the ice cream shaped solid can be found by converting the limits of the cone to polar coordinates and performing a double integral. The limits of the cone are represented by the expressions z = r and z = sqrt(50 - r^2). The volume integral will be ∫ _(theta=0 to 2*pi) ∫ _(r=0 to sqrt(50)) [(sqrt(50 - r^2)) - r] r dr dθ.
Explanation:To evaluate the volume of the solid resembling an ice cream cone, we can use the method of double integration in polar coordinates. Because we're dealing with a cone, polar coordinates are suitable as they're related to circular symmetry.
The limits of the cone are given by the functions z = sqrt(x^2 + y^2) and z = sqrt(50 - x^2 - y^2). In polar coordinates these become z = r and z = sqrt(50 - r^2).
To evaluate the volume of the cone, we need to subtract the volume of the lower cone (given by z = r) from the volume of the upper cone (given by z = sqrt(50 - r^2)). We convert the values to polar coordinates and use double integration as follows:
V = ∫ _(theta=0 to 2*pi) ∫ _(r=0 to sqrt(50)) [(sqrt(50 - r^2)) - r] r dr dθ
This integral, once solved, will give the volume of the ice cream shaped solid.
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Your friend has $100 when he goes to the fair. He spends $10 to enter the fair and $20 on food. Rides at the fair cost $2.00 per ride. Which function can be used to determine how much money he has left over after x rides?
A large dinosaur was 89 feet long. Convert the length to meters. (Use 1 yd≈0.9144 m.)
Is (-2,5) a solution to the inequality y<-3x+4 show steps
Jacob, Kylie, and Manuel each bought a sandwich and drink. The total bill to $21, and each drink cost $2. Of each sandwich cost the same amount, what is the cost of one sandwich?
90,175,087,309 in expanded form
Spence Ferris, a sales representative, drove 4 1/2 hours on the first day of his business trip, 8 3/4 hours on the second day, 6 2/3 hours on the third day, and 5 1/6 hours on the fourth day. If he must drive a total of 30 hours in five days, how much hours must Spence drive on the fifth day.
there are 36 female preformers in a dance recital.the ratio of men to women is 2:9 how many men are in the dance recital.
2:9 means for every 2 men there are 9 women
36/9 =4
4*2 = 8
there are 8 men
In a biology lab, a student has measured the lengths of 30 palmetto bugs in inches. he computes the mean and standard deviation as 4.1 inches and 1.2 inches, respectively. he later finds out that he was supposed to calculate the mean and standard deviation in centimeters instead of in inches. what is the new standard deviation of his sample, in centimeters? (note: 1 in = 2.54 cm)
what is the inverse of the function below
Answer:
[tex]f^{-1}=4(x+2)[/tex]
Step-by-step explanation:
[tex]f(x)=\frac{x}{4} -2[/tex]
To find inverse function , replace f(x) with y
[tex]y=\frac{x}{4} -2[/tex]
Swap the variables x and y
[tex]x=\frac{y}{4} -2[/tex], nbw we solve for y
Add 2 on both sides
[tex]x+2=\frac{y}{4}[/tex]
Now to eliminate 4, we multiply 4 on both sides
[tex]y=4(x+2)[/tex]
Replace y with f^-1
[tex]f^{-1}=4(x+2)[/tex]
3(4x + 3) = 2x - 5(3 - x) + 2
The solution to the given-equation represented by "3(4x + 6) = 9x + 12" is : (b) x = -2.
To find the solution to the equation 3(4x + 6) = 9x + 12, we simplify and solve for x,
First, we distribute the 3 to both terms,
12x + 18 = 9x + 12
Next, we separate variable-term by subtracting 9x from both sides:
12x - 9x + 18 = 9x - 9x + 12,
Simplifying further:
We get,
3x + 18 = 12,
Next, we separate "x" by subtracting 18 from both sides,
3x + 18 - 18 = 12 - 18,
3x = -6,
(3x) / 3 = (-6) / 3,
x = -2
Therefore, the correct answer is (b) x = -2.
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The given question is incomplete, the complete question is
What is the solution to the equation 3(4x + 6) = 9x + 12?
(a) x = 2,
(b) x = -2,
(c) x = 10,
(d) x = -10.
Find all the second partial derivatives. v = e5xey
Final answer:
The second partial derivatives of v = e⁵x * ey are ∂²v/∂x² = 25e⁵x * ey and ∂²v/∂x² = 5e⁵x * e^y.
Explanation:
To find the second partial derivatives of the function v = e⁵x * ey, we need to differentiate twice with respect to x and y. Let's start with the first partial derivative with respect to x:
∂v/∂x = ∂(e⁵x * ey)/∂x
= 5e⁵x * ey
Next, we differentiate the first partial derivative with respect to x to find the second partial derivative with respect to x:
∂²v/∂x² = ∂(5e⁵x * ey)/∂x
= 25e⁵x * ey
Similarly, the second partial derivative with respect to y is:
∂²v/∂x² = ∂(5e⁵x * ey)/∂y
= 5e⁵x * e^y
jody has 2 red marbles 6 blue marbles and yellow marbles what is the ratio to red to blue
It's the holiday season and you are working for a packing company that specializes in holiday fruit cakes. For Christmas this year, the number of clients requesting fruit cakes has more than tripled and orders need to be shipped prior to the New Year. Your supervisor has asked you to work 15 hours more than a normal 40 hour work week, including Christmas day, which falls on a Friday. Therefore, one of your regular 8 hour days will be paid at the holiday rate. You get paid $10.00 per hour plus you get time and a half for overtime and double pay for the holidays. What will your gross base pay be for the week?
Normal rate: $10/hr
Time and a half= $15/hr
Double pay: $20/hr
Hours to be paid at $10/hr =32 hours
$10/hr x 32hrs= $320
$20/hr x 8hrs= $160
$15/hr x 15hrs=$225
Total gross pay: $705
To calculate your gross base pay for the week working extra hours including a holiday, you need to consider regular pay, overtime pay, and holiday pay. The gross base pay for the week will be $785.00.
Explanation:To calculate your gross base pay for the week, you need to consider your regular hours, overtime hours, and holiday pay. Here's how you can calculate it:
Calculate your regular pay for the 40 hours of work at the regular rate: $10.00 per hour x 40 hours = $400.00.Calculate your overtime pay for the 15 additional hours of work at time and a half: $10.00 per hour x 1.5 = $15.00 per hour. $15.00 per hour x 15 hours = $225.00.Calculate your holiday pay for the 8-hour day at double the regular rate: $10.00 per hour x 2 = $20.00 per hour. $20.00 per hour x 8 hours = $160.00.Add up your regular pay, overtime pay, and holiday pay: $400.00 + $225.00 + $160.00 = $785.00.Therefore, your gross base pay for the week will be $785.00.
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URGENT PLEASE HELP!!! I want to know HOW to solve this as well.
What is the solution to the equation?
4(3 + 7) = 4 · x + 4 · 7
A.
x = 3
B.
x = 4
C.
x = 7
D.
x = 10
A is your anwser. Hope this Helps