Answer:
The diameter is 36 inches
Step-by-step explanation:
The volume of a sphere is
[tex] \frac{4}{3} \pi {r}^{3} [/tex]
The given sphere has volume
[tex]7776\pi {in}^{3} [/tex]
We can now equate the formula to the given volume and solve for r.
[tex]\frac{4}{3} \pi {r}^{3} = 7776\pi[/tex]
[tex] {r}^{3}= 7776\pi \times \frac{3}{4\pi} [/tex]
[tex] {r}^{3} = 5832[/tex]
[tex]r = \sqrt[3]{5832} [/tex]
[tex]r = 18[/tex]
The diameter of the sphere is twice the radius.
Hence
[tex]diameter = 2 \times 18 = 36in[/tex]
Jackson goes to the gym 0, 2, or 3 days per week, depending on work demands. The expected value of the number of days per week that Jackson goes to the gym is 2.05. The probability that he goes 0 days is 0.1, the probability that he goes 2 days is , and the probability that he goes 3 days is .
For a probability distribution the expected value is the summation of product of probabilities with their respective data values. Let x be the probability that Jackson goes gym for 2 days and y be the probability that he goes gym for 3 days.
For the given case we have following values and their probabilities:
0 : 0.1
2 : x
3 : y
So the expected value will be = 0(0.1) + 2(x) + 3(y)
Expected value is given to be 2.05. So we can write the equation as:
2x + 3y = 2.05 (Equation 1)
Also for a probability distribution, the sum of probabilities must always equal to 1. So we can set up the second equation as:
0.1 + x + y = 1
x + y = 0.9 (Equation 2)
From Equation 2 we can write the value of x to be x = 0.9 - y. Using this value in equation 1, we get:
2(0.9 - y) + 3y = 2.05
1.8 - 2y + 3y = 2.05
1.8 + y = 2.05
y = 0.25
Using the value of y in equation 2 we get value of x to be 0.65
Therefore we can conclude that:
The probability that Jackson goes to gym for 2 days is 0.65 and the probability that he goes to gym for 3 days is 0.25
He goes to the gym 0, 2, or 3 days per week.
Let's assume P(0 days)=p, P(2 days)=q, and P(3 days) = r.
So, p+q+r = 1
E(X)= E(x=0)*P(0 days) + E(x=2)*P(2 days) + E(x=3)*P(3 days)
E(X) = 0*p + 2*q + 3*r = 2q + 3r
Given is the value of P(0 days) = p = 0.1
Given is the expected value of number of days is E(X) = 2.05
Therefore, we have 0.1 + q + r = 1 and 2q + 3r = 2.05
Or, q + r = 0.9 and 2q + 3r = 2.05
Solving the two equations :-
(2q+3r)-2*(q+r) = 2.05-2(0.9)
r = 0.25
q = 0.65
Therefore, P(2 days) = 0.65 and P(3 days) = 0.25
Sarah bought a 16 ounce jar of strawberry jam for $3.20. What is the unit price
Alice paid $17.00 for 2 beads for her bracelet. Then she paid $42.50 for 5 more of the same kind of beads for her bracelet. Which is the price of one bead?
Answer:
Step-by-step explanation:
Organizers of an outdoor concert will use 320 feet of fencing to fence off a rectangular VIP section. What is the maximum area that they can fence off? A) 3,200 square feet B) 6,400 square feet C) 12,800 square feet D) 24,000 square feet
Answer:
B
Step-by-step explanation:
what is the equivalent equation 2x-10/25-x^2
A store charges $280 for coat. This price is 40 percent more than the amount it cost the store to buy. At the end-of-season sale, store employees may purchase any remaining coats at 30 percent off the store’s cost. How much would it cost an employee to purchase the coat at the sale?
it would cost an employee $140 to purchase the coat at the sale.
Let's break down the problem step by step:
1. The store charges $280 for the coat, which is 40% more than the amount it cost the store to buy. This means that the store's cost (let's call it ( C )) can be found by first determining what 100% of the cost is (since $280 is 140% of the cost, as 100% + 40% = 140%). We can set up the equation:
[tex]\[ 140\% \text{ of } C = $280 \]\[ 1.4C = $280 \]\[ C = \frac{$280}{1.4} \]\[ C = $200 \][/tex]
So, the store's cost for the coat is $200.
2. At the end-of-season sale, store employees can purchase any remaining coats at 30% off the store’s cost. This means they pay 70% of the store's cost. We can calculate this as:
[tex]\[ 70\% \text{ of } $200 = 0.7 \times $200 = $140 \][/tex]
Therefore, it would cost an employee $140 to purchase the coat at the sale.
DF bisects EDG find the value of x
how do you solve for x and y
How is the degree of the product of two polynomials p(x) and q(x) related to the degrees of p(x) and q(x)?
The degree of the product of two polynomials p(x) and q(x) is equal to the sum of the degrees of p(x) and q(x).
Explanation:The degree of the product of two polynomials p(x) and q(x) is related to the degrees of p(x) and q(x) by the following rule:
The degree of the product is equal to the sum of the degrees of the two polynomials.
For example, if p(x) is a polynomial of degree m and q(x) is a polynomial of degree n, then the product p(x)q(x) will be a polynomial of degree m+n.
Tshonda is buying a laptop computer. she will pay 8% sales tax on the price before any rebates. where will she get a better buy?
XYZ-Tronic
price - $629
mail-in rebate $150
TEC-U-COMP
price - $649
discount 25% off
The above me is clearly wrong. However, the reason I'm not going to post an actual answer is because this post is over 2 years old and there is a good chance the they aren't even in school anymore.
A rectangle has a perimeter of 34 cm in an area of 52 cm squared it's length is 5 more than twice its width write and solve the system of equations to find the dimensions of the rectangle
Let [tex] l [/tex] be the length and [tex] w [/tex] be the width of the rectangle.
Given perimeter of the rectangle
[tex] 2(l+w)=34 \; l+w=17[/tex]
Area of the rectangle is
[tex] lw=52 [/tex]
Also length is 5 more than twice its width,
[tex] l=2w+5 [/tex]
From the above equations
[tex] (l-w)^2=(l+w)^2-4lw=17^2-4*52=81\\
l-w=9,\; since \; l>w [/tex]
Now [tex] 2l=9+17=26\;,l=13,w=4 [/tex]
The dimensions of the rectangle are length [tex] l=13 [/tex], and width [tex] w=4 [/tex].
A miner descended 1200 feet into a mine. While in the mine, he then rose 450 feet and then descended 150 feet. What was the miner's net gain or loss in altitude? 1500 ft 600 ft –1500 ft –900 ft
A ladder is leaning on a fence and it reaches up a wall 20 feet high. The fence is 10 feet from the wall and the base of the ladder is 12 feet from the fence. How tall is the fence, in feet?
Answer:
10.9 feetStep-by-step explanation:
The wall, fence and ladder form similar right triangles as pictured
Use the ratio of corresponding sides to solve for x, the fence height
x/12 = 20/(10+12)x/12=20/22x/12 = 10/11x = 12*10/11x = 10.9 feetThe fence is 10.9 feet tall
9. Find the constant of variation, k, for y= –8 when x = 12.
show your work
A consult needs to make at least $600 this week she earns $120 for each new piece and $60 for each review which of the following inequalities represents the possible combinations of reviews and new written pieces that she must complete
The possible combinations of reviews and new written pieces can be represented by the inequality 60r + 120n ≥ 600.
Explanation:To represent the possible combinations of reviews and new written pieces, we can use the variables r for reviews and n for new pieces.
The total earnings can be calculated by multiplying the number of reviews by $60 and the number of new pieces by $120, and this must be greater than or equal to $600.
Therefore, the inequality that represents the possible combinations is 60r + 120n ≥ 600.
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PLEASE HELP ASAP!!!!!
factor 1/5 out of 1/5x+29/5
To factor 1/5 out of the algebraic expression 1/5x + 29/5, we remove the common term 1/5. This leaves us with 1/5 * (x + 29), not altering the value of the original expression.
Explanation:To factor 1/5 out of 1/5x+29/5, we first need to understand what factoring entails. Factoring is basically expressing an algebraic equation as a product of its factors.
Step 1: Look at the expression '1/5x + 29/5'. We can see that '1/5' is common in both terms.
Step 2: Factor out the common term, which in this case is '1/5'.
So the expression '1/5x + 29/5' factored out would be '1/5 * (x + 29)'. Throughout this process, we have not changed the value of the original expression, only rewritten it in a different form.
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Three times the sum of a number and six
Answer:
3(x+6)
Step-by-step explanation:
An event is three times as likely as its complement. What is the probability of the event?
A map has a scale of 1/2 inch to 4 miles. The shortest distance between two cities on the map measures 8 inches. If d represents the shortest distance between the two cities, what is d?
A. 16 mi.
B. 32 mi.
C. 64 mi.
D. 72 mi.
Answer:
C
TOOK SAME TEST ON EDGE 2021
help please 38 points
Dadas las funciones f(x) = x + 3, g(x)= x(cuadrada)+ 5x + 6,r(x) = x+2, s(x) = x(cuadrada) - 3x - 10
Determina (g(x)) (s(x))
a model car has been made using a scale factor if 1.5 inches:3 feet. If the actual car is 13.75 feet long, what is the length of the model?
To find the length of the model car, set up a proportion and cross multiply.
Explanation:To find the length of the model car, we need to use the scale factor given. The scale factor is 1.5 inches:3 feet. This means that for every 1.5 inches in the model, there are 3 feet in the actual car.
Given that the actual car is 13.75 feet long, we can set up a proportion:
1.5 inches / 3 feet = X inches / 13.75 feet
Cross multiplying, we get:
1.5 inches * 13.75 feet = 3 feet * X inches
Simplifying, we find that the length of the model car is approximately 6.88 inches.
y + 2.3 = 0.45x
–2y = 4.2x – 7.8
(2.4, –1.2)
(–1, 2.5)
no solution
infinitely many solutions
Find the nonpermissable replacement for x in this expression x^2/-4x-8
What is the length of the diagonal of rectangle abcd ?
3+45456688888876777888888
What is QR to the nearest tenth
Which of the following modifications to the list of assets and liabilities below would result in a negative net worth? House valued at $90,000. Mortgage owed $78,000. Car valued at $11,000. Car loan of $5,000. Student loan of $13,700. Stocks valued at $2,500. Savings of $3,000. a. Net worth is already negative. b. House value decreasing to $83,000. c. Borrowing $10,000 more in student loans. d. Selling off all owned stocks.
Answer:
The correct answer is C. Borrowing $10,000 more in students loans.
Option C - Borrowing $10,000 more in student loans is the correct Alternative.
We have list of assets and liabilities.
We have to determine which of given modification would result in negative net worth.
What is Asset and Liabilities?Assets are the items your company owns that can provide future economic benefit. Liabilities are what you owe other parties.
According to the question -
Assets = House + Car + Stocks + Savings.
Total Assets = $90,000 + $11,000 + $2,500 + $3,000 = $106500
Liabilities = Mortgage + Car loan + Student loan.
Total Liabilities = $78,000 + $5,000 + $13,700 = $96700
Now if you borrow $10000 more in student loan then -
Total Liabilities = $78,000 + $5,000 + $13,700 + $10000 = $96700 + $10000 = 1,06,700 > Assets.
Hence, Option C is the correct Alternative.
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Finding the median in a data set?