Answer:
\(2.4286 \:cm\)
Step-by-step explanation:
Volume of a sphere is given by the formula
\(V = \dfrac{4}{3} \pi r^3\\\\\)
Given V = 60 cm³, we get
\(60 = \dfrac{4}{3} \cdot \pi \cdot r^3\\\\60 = \dfrac{4\pi}{3} r^3\\\\\text{Multiply both sides by $\dfrac{3}{4\pi}$}\\60 \cdot \dfrac{3}{4\pi} = r^3\\\\\dfrac{45}{\pi} = r^3\\\\r^3 = \dfrac{45}{\pi}\\\\r^3 = 14.323945\)
\(r = \sqrt{3}{14.323945}\)\(r = \sqrt[3]{14.323945}\\\\r = 2.4285 \; cm\)
You roll a fair six-sided die twice. Find the probability of rolling a 2 the first time and a number greater than 1 the second time.
Answer:
for finding a 2 it would be 2/12 then for finding a number greater than 1 it would be 10/12. 16.6666...%=2/12 10/12=83.33333333...%
Step-by-step explanation:
What is (3x7 + 7x5 - 3x² + 7) + (x7 - 3x5 + 2x³ + 3)?
Answer:
Hope this helps ;) don't forget to rate this answer !
Step-by-step explanation:
To solve this problem, we need to perform the indicated operations in order. The first step is to simplify the expressions inside the parentheses.
(3x7 + 7x5 - 3x² + 7) + (x7 - 3x5 + 2x³ + 3)
= (21x + 35x - 3x² + 7) + (7x - 15x + 2x³ + 3)
The next step is to combine like terms within each parentheses:
= (21x + 35x - 3x² + 7) + (7x - 15x + 2x³ + 3)
= (56x - 3x² + 7) + (-8x + 2x³ + 3)
Finally, we can add the two expressions:
= (56x - 3x² + 7) + (-8x + 2x³ + 3)
= 56x - 3x² - 8x + 2x³ + 3 + 7
= 56x - 3x² - 8x + 2x³ + 10
The final answer is 56x - 3x² - 8x + 2x³ + 10.
A researcher counted the hours a brand of batteries could power different devices. The data are normally distributed with a mean of 74.6 hours and a standard deviation of 9.1 hours.
What percentage of devices ran on the batteries for fewer than 63 hours?
Approximately 10.20% of devices ran on the batteries for fewer than 63 hours.
To determine the percentage of devices that ran on the batteries for fewer than 63 hours, we can utilize the properties of a normal distribution. Given that the data is normally distributed with a mean of 74.6 hours and a standard deviation of 9.1 hours, we can calculate the z-score for the value 63.
The z-score represents the number of standard deviations a given value is from the mean. It can be calculated using the formula:
z = (x - μ) / σ
Where:
z = z-score
x = observed value
μ = mean
σ = standard deviation
Let's calculate the z-score for 63 hours:
z = (63 - 74.6) / 9.1
z = -1.27
With the obtained z-score, we can then use a standard normal distribution table (also known as a z-table) to find the corresponding percentage. The z-table provides the area under the curve to the left of a given z-score.
Looking up the z-score of -1.27 in the z-table, we find that the area to the left of this z-score is approximately 0.1020 or 10.20%.
Therefore, approximately 10.20% of devices ran on the batteries for fewer than 63 hours.
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PLS HELP ASAP!!!!........
Answer:
aaaaha pues
Step-by-step explanation:
Answer:
what happened
Step-by-step explanation:
tooth is an example of early dental care commonly found in human skull
Answer:
True.
Step-by-step explanation:
Find the investment value when compounded anually.
P = $120,000, r= 5.3%, t = 8 yr
Given:
\(P=\$120,000\)
\(r=5.3\%\)
\(t=8\text{ years}\)
To find:
The value of the investment when the interest is compounded annually.
Solution:
The formula for amount is:
\(A=P\left(1+\dfrac{r}{n}\right)^{nt}\)
Where, P is the principal, r is the rate of interest in decimal, n is the number of time interest compounded in an years, and t is the number of years.
The interest is compounded annually. So, \(n=1\).
Substituting \(P=120000, r=0.053, n=1, t=8\) in the above formula, we get
\(A=120000\left(1+\dfrac{0.053}{1}\right)^{1(8)}\)
\(A=120000\left(1.053\right)^{8}\)
\(A=181387.85936\)
\(A\approx 181387.86\)
Therefore, the value of the investment after 8 years is $181,387.86.
100 Points! Geometry question. Identify the similar triangles. Then find each measure. Photo attached. Please show as much work as possible. Thank you!
The similar triangles for this problem are given as follows:
RST and VUT.
Then the measure VT is given as follows:
VT = 5.4 units.
What are similar triangles?Similar triangles are triangles that share these two features listed as follows:
Congruent angle measures, as both triangles have the same angle measures.Proportional side lengths, which helps us find the missing side lengths.Hence the similar triangles for this problem are given as follows:
RST and VUT.
The proportional relationship for the side lengths is given as follows:
6/14 = (x + 2)/(4x - 1).
Applying cross multiplication, the value of x is obtained as follows:
14(x + 2) = 6(4x - 1)
14x + 28 = 24x - 6
10x = 3.4
x = 3.4.
Then the length VT is given as follows:
VT = 3.4 + 2
VT = 5.4 units.
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PLEASE ASNWER ASAP!!!!!!!!!!!!!!!
Answer:
50 + 5p ≥ 85
50 is pages already read
5p is the number of pages he wants to read each day Monday through Friday (5 days, so 5p is 5 times pages read per day)
greater that or equal to 85 means at least 85 pages
shade the area on a grid that shows 5/8 x 2/4
The shaded area represents 10/24 in the attachment.
Define the term area?Area is the measurement οf the size οf a 2-dimensiοnal regiοn οr surface, usually expressed in square units such as square inches, square meters, οr square feet. The area is the regiοn bοunded by the shape οf an οbject. The space cοvered by the figure οr any twο-dimensiοnal geοmetric shape, in a plane, is the area οf the
5/8 × 2/4
Fοr 5/8 we shade 5 piece frοm tοtal 8.
Fοr 2/4 we shade 2 piece frοm tοtal 4.
The cοmmοn sectiοn represents = 5/8 × 2/3
= 10/24
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The complete question is given below
Shade the area on a grid that shows 5/8 x 2/4
similar triangles ABE and BCD are shown on the coordinate plane. line t passes through points A, B, and C write equation for t
Answer:
\( y = \frac{2}{3}x + 1 \)
Step-by-step explanation:
First, find the slope, m, and y-intercept, b, of line t.
Slope (m) = CD/BD
Slope (m) = 4/6 = ⅔
y-intercept is y = 1. This is where the line intercepts the y-axis. So, b = 1.
Substitute m = ⅔, and b = 1, in \( y = mx + b \).
Thus, the equation for line t would be:
\( y = \frac{2}{3}x + 1 \)
Michaela plans on installing heated tile in her kitchen. A diagram of the kitchen floor plan is shown below.
Calculate the area of the floor, to the nearest 10th, to determine how many square metres of tile Michaela will need to buy.
*Hint: Divide the shape into 2! You will need to use trig!
Check the picture below.
so hmm we have a 6x6 square atop and a triangle with base of 6 and a height of "h", let's get "h".
\(\sin( 42^o )=\cfrac{\stackrel{opposite}{h}}{\underset{hypotenuse}{2}} \implies 2\sin(42^o)=h \implies 1.34\approx h \\\\[-0.35em] ~\dotfill\\\\ \stackrel{ \textit{\LARGE Areas} }{\stackrel{triangle}{\cfrac{1}{2}(\underset{b}{6})(\underset{h}{1.34})}~~ + ~~\stackrel{ square }{(6)(6)}} ~~ \approx ~~ 4.02+36~~ \approx ~~ \text{\LARGE 40.0}\)
Replacement glass for energy-efficient windows costs $5.00 per square foot. About how much will you pay for replacement glass for a regular hexagonal window with a radius of 2 feet?
A. $10.39
B. $27.78
C. $45.98
D. $51.96
Answer:
Cost = $51.96
Step-by-step explanation:
The radius of a regular hexagonal window, r = 2 feet
The area of a hexagonal shaped figure is given by :
\(A=\dfrac{3\sqrt3}{2}r^2\)
Put r = 2 feet in above formula
\(A=\dfrac{3\sqrt3}{2}\times (2)^2\\\\A=10.392\ \text{unit}^2\)
Replacement glass for energy-efficient windows costs $5.00 per square foot. It means, the total cost will be :
\(A=10.392\times 5\\\\A=\$51.96\)
So, the required cost will be $51.96. Hence, the correct option is (d).
Some History teachers at Riverside High School are purchasing tickets for students and their adult chaperones to go on a field trip to a nearby museum. For her class, Mrs. Levin bought 27 student tickets and 25 adult tickets, which cost a total of $614. Mr. Lawson spent $733, getting 27 student tickets and 32 adult tickets. What is the price for each type of ticket?
Answer:
Cost of student ticket = $7
Cost of Adult ticket = $17
Step-by-step explanation:
Let cost of student ticket = x
Cost of Adult ticket = y
Making expressions from statements
Mrs. Levin bought 27 student tickets and 25 adult tickets, which cost a total of $614. \(27x+25y=614\)
Mr. Lawson spent $733, getting 27 student tickets and 32 adult tickets. \(27x+32y=733\)
Now solving these equations to find values of x and y
Let
\(27x+25y=614--eq(1)\\27x+32y=733--eq(2)\)
Subtracting both equations
\(27x+25y=614\\27x+32y=733\\-\:\:\:-\:\:\:\:\:\:\:\:\:\:\:\:-\\-------\\-7y=-119\\y=\frac{-119}{-7}\\y=17\)
So, we get value of y = 17
Now, finding value of x, by putting value of y in eq(1)
\(27x+25y=614\\Put\:y=17\\27x+25(17)=614\\27x+425=614\\27x=614-425\\27x=189\\x=\frac{189}{27}\\x=7\)
So, we get value of x = 7
Cost of student ticket = x = $7
Cost of Adult ticket = y = $17
Let be independent random variables with the common distribution function F and suppose they are independent of a geometric random variable with parameter p. Let M = max(x1,....,xN) (a) Find P{M<} by conditioning on N (b) Find P(M1} (d) Use (b) and (c) to rederive the probability you found in (a).
suppose they are independent of a geometric random variable with parameter p. Let M = max(x1,....,xN) (a) Find P{M<} by conditioning on N is nλe^(-nλx)
Given fx (x) = λe^λx
Fx (x) = 1 – e^-λx x…0
To find distribution of Min (X1,….Xn)
By applying the equation
fx1 (x) = [n! / (n – j)! (j – 1)!][F(x)]^j-1[1-F(x)]^n-j f(x)
For minimum j = 1
[Min (X1,…Xn)] = [n!/(n-1)!0!][F(x)]^0[1-(1-e^-λx)]^n-1λe^-λx
= ne^[(n-1) λx] λe^(λx)
= nλe^(-λx[1+n-1])
= nλe^(-nλx)
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The skeletal system is not responsible for which of the following?
Answer now
D. moving red blood cells around the body
HELP PLEASE URGENT!!!
A Ferris wheel is 50 meters in diameter and boarded from a platform that is 4 meters above the ground. The six o'clock position on the Ferris wheel is level with the loading platform. The wheel completes 1 full revolution in 2 minutes. How many minutes of the ride are spent higher than 38 meters above the ground?
answer in minutes.
The number of minutes spent higher than 38 meters above the ground on the Ferris wheel ride is approximately 1.0918 minutes.
To solve this problem, we need to determine the angular position of the Ferris wheel when it is 38 meters above the ground.
The Ferris wheel has a diameter of 50 meters, which means its radius is half of that, or 25 meters.
When the Ferris wheel is at its highest point, the radius and the height from the ground are aligned, forming a right triangle.
The height of this right triangle is the sum of the radius (25 meters) and the platform height (4 meters), which equals 29 meters.
To find the angle at which the Ferris wheel is 38 meters above the ground, we can use the inverse sine (arcsine) function.
The formula is:
θ = arcsin(h / r)
where θ is the angle in radians, h is the height above the ground (38 meters), and r is the radius of the Ferris wheel (25 meters).
θ = arcsin(38 / 29) ≈ 1.0918 radians
Now, we know the angle at which the Ferris wheel is 38 meters above the ground.
To calculate the time spent higher than 38 meters, we need to find the fraction of the total revolution that corresponds to this angle.
The Ferris wheel completes one full revolution in 2 minutes, which is equivalent to 2π radians.
Therefore, the fraction of the revolution corresponding to an angle of 1.0918 radians is:
Fraction = θ / (2π) ≈ 1.0918 / (2π)
Finally, we can calculate the time spent higher than 38 meters by multiplying the fraction of the revolution by the total time for one revolution:
Time = Fraction \(\times\) Total time per revolution = (1.0918 / (2π)) \(\times\) 2 minutes
Calculating this expression will give us the answer in minutes.
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Inequalities - Introduction
Answer:
n = 19
Step-by-step explanation:
2n > 36 ( divide both sides by 2 )
n > 18
and
5n < 100 ( divide both sides by 5 )
n < 20
so n > 18 and n < 20
thus n = 19
Type the correct answer in the box. Use numerals instead of words. If necessary, use / for the fraction bar.
Note: figure not drawn to scale.
Clay's oat barn has an air vent in the shape of a rectangular prism lengthwise through the barn. Clay is able to use the entire volume of the barn, except for the air vent, to store oats. He has decided to fill the barn to capacity to be prepared for the upcoming winter and planting season.
Clay called the Farmers CO-OP and ordered
cubic feet of oats.
The ratio of the scaled area to the actual area of the patio is 0.1389 square feet : 320 square feet or 1 : 2306.56
What is a scale factor?A scale factor is defined as the ratio between the scale of a given original object and a new object,
We have,
The actual dimensions of the patio are 20 feet by 16 feet.
The scale factor is 1 inch to 4 feet,
This means that 1 inch on the scale drawing represents 4 feet in reality.
So the dimensions of the scale drawing are:
20 feet x (1/4) = 5 inches (length on scale drawing)
16 feet x (1/4) = 4 inches (width on scale drawing)
The area of the actual patio is:
= 20 feet x 16 feet
= 320 square feet
The area of the scale drawing is:
= 5 inches x 4 inches
= 20 square inches
The ratio of the area of the scaled drawing to the actual area of the patio is: 20 square inches : 320 square feet
To simplify this ratio, we need to convert both values to the same units.
Converting the area of the scale drawing to square feet:
= 20 square inches x (1/144) square feet/square inch
= 0.1389 square feet
So the ratio of the area of the scaled drawing to the actual area of the patio is:
0.1389 square feet : 320 square feet
Or, in simplified form:
1 : 2306.56
Thus,
The ratio of the scaled area to the actual area of the patio is 0.1389 square feet : 320 square feet or 1 : 2306.56
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10 + 3x = 2(3 + 4) +5
Answer:
x=3
Step-by-step explanation:
10+3x=2(3+4)+5
3x=2(7)-5
3x=14-5
3x=9
x=3
You're welcome sir
PLEASE HELPP WITH THIS
Answer:
Go through Option D. If I'm right so,
Please mark me as brainliest. thanks!!!
How many pounds does a 2,500-gram baby weigh, to the nearest tenth of a pound? [16 ounces = 1 pound][28.4 grams ≈ 1 ounce]
Answer: The baby would weigh approximately 5.5 pounds
Step-by-step explanation:
2,500/28.4 ≈ 88.02 ounces
88.02/16 ≈ 5.501
To the nearest tenth, the answer would be 5.5 pounds (correct me if I'm wrong.)
What does PEMDAS stand for? Then, solve with pemdas in order -> 3 x 2 +( 4 - 1) = ??
Answer:
PEMDAS” (parenthesis, exponents, multiplication, division, addition, subtraction) to help you remember? Memorable acronyms aren't the only way to memorize concepts.
Step-by-step explanation: -> 3 x 2 +( 4 - 1) = ??
always when you see these in your equation you always start with these>>>(4-1=3) then 3x2=6 then you add that then you get 9
9 is your answer hope this helps
Answer:
The answer is 9.
Step-by-step explanation:
PEDMAS stands for :
\(\purple\star\) P = Parentheses \(\purple\star\) E = Exponents \(\purple\star\) M = Multiplication \(\purple\star\) D = Division \(\purple\star\) A = Addition \(\purple\star\) S = SubtractionTo solve the given equation we will follow the PEDMAS rule.
\(\begin{gathered}\qquad{\twoheadrightarrow{\sf{3 \times 2 + (4 - 1)}}} \\ \\ \qquad{\twoheadrightarrow{\sf{3 \times 2 + (3)}}} \\ \\ \qquad{\twoheadrightarrow{\sf{3 \times 2 + 3}}} \\ \\ \qquad{\twoheadrightarrow{\sf{6+ 3}}} \\ \\ \qquad{\twoheadrightarrow{\sf{9}}} \\ \\ \qquad{\star\underline{\boxed{\tt \pink{ \: 9 \: }}}}\end{gathered}\)
Hence, the answer is 9.
\(\rule{300}{2.5}\)
PLEASE HELP................
1. The scale factor here in the dilation is 4/3.
2. Yes, dilation occurred on the coordinate plane below. The scale factor for the dilation is -4/3.
What is dilation?During the process of dilatation, an object must be reduced in size or changed. It is a transformation that uses the given scale factor to shrink or expand the objects. The image is the new figure that forms as a result of dilatation, whereas the pre-image is the original figure. There are two kinds of dilation:
A rise in an object's size is referred to as expansion.
Contraction is the term used for a reduction in size.
Here in the question,
The coordinates of the point B change from (-3,6) to (-4,8).
The scale factor here is -4/-3=4 or 8/6=4/3.
Now, when the dilation happens below the plane, the coordinates will be (x,-y)
So, the dilation factor will be -4/3.
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What is the equivalent fraction of 5/8 that has a denominator of 32
Answer:
20/32
Step-by-step explanation:
multiply numerator and denominator by 4 :
5*4/ 8*4 = 20/32
2. Regina Aguirre deposits $2,000 into an ordinary annuity after each 6-month period for 4 years. The account
pays 6% interest compounded semiannually. Find the a) future value, and b) total interest earned.
Provide Reasons for the Proof
Given: AB || DC
m
Prove: BC || EF
The reasons for the proof are shown in the explanation below.
Properties of a transversal.A transversal is straight line that intersect two parallel lines, thus producing a set of angles with some common properties.
The reasons for the proof required in the question are explained in the table below:
STATEMENT REASON
1. AB II DC ; m<BCD + m<BEF = 180^o Given
2. <3 ≅ <1 Corresponding angle theorem
3. <4 + <5 = 180^o Definition of supplementary angles
4. <3 ≅ <5 Vertical angle property
5. <5 ≅ <2 Corresponding angle theorem
6. <3 ≅ <2 Corresponding property of vertical angles
7. BC II EF Definition of parallel lines
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Suppose you deposit $1000 in a CD paying 5% interest, compounded monthly. How much will you have in the account after 10 years? Show your solutions
Answer:
A = $1647.01
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASAlgebra I
Compounded Interest Rate Formula: \(A=P(1+\frac{r}{n} )^{nt}\)
A is final amountP is principle amountr is raten is compounded termst is time (in years)Step-by-step explanation:
Step 1: Define variables
P = 1000
r = 5% = 0.05
n = 12
t = 10
Step 2: Solve
Substitute: \(A=1000(1+\frac{0.05}{12} )^{12(10)}\)Divide: \(A=1000(1+0.004167 )^{12(10)}\)Add: \(A=1000(1.004167 )^{12(10)}\)Multiply: \(A=1000(1.004167 )^{120}\)Exponent: \(A=1000(1.64701)\)Multiply: \(A=1647.01\)One month Sam rented 3 movies and 5 video games for a total of $32. The next month, he rented 12 movies and 2 video games for a total of $29. Find the rental cost for a movie and a video game.
Using a system of equations, the rental cost for a movie and a video game is as follows:
Movie = $1.50Video game = $5.50.What is a system of equations?A system of equations is two or more equations solved concurrently or at the same time.
A system of equations is also described as simultaneous equations.
Movies Video Total
Games Cost
First month rental 3 5 $32
Second month rental 12 2 $29
Let the rental cost per movie = x
Let the rental cost per video game = y
Equations:
3x + 5y = 32 ... Equation 1
12x + 2y = 29 ... Equation 2
Multiply Equation 1 by 4:
12x + 20y = 128 ... Equation 3
Subtract Equation 2 from Equation 3:
12x + 20y = 128
-
12x + 2y = 29
18y = 99
y = 5.5
Substitute y = 5.5 in Equation 1 or 2:
12x + 2y = 29
12x + 2(5.5) = 29
12x + 11 = 29
12x = 18
x = 1.5
Thus, based on simultaneous equations, the rental cost for a movie is $1.50 while a video game's is $5.50.
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What is the period of the graph of y = 5 sin (4pi x) + 3?
A. 4pi
B. 1/2
C. 3
D. 5
Answer:
Step-by-step explanation:
Equate whats inside (arguments) \sin with base period of sine function 2\pi and solve for x to get period,
\pi x=2\pi\implies x=2
So the period of the graph of the given function is precisely 2.
Hope this helps :)
Jolie uses childcare facilities at her gym. Her monthly dues are $32, and childcare is $9 per visit this month she does not wish to spend more than $122 for both dues and childcare. If x represents the number of times she can use childcare services
Which of the following inequalities symbolizes this situation?
x
Answer:
A
Step-by-step explanation:
Let x= number of visits she makes
9(number of visits she makes) + 32 (less than or equal to) <= 122
9x+32<= 122