Please solve for x
(X+4)/x=45
The sum of a number and 12 is 20. What is the number?
Write a number with the digit 8 in the tens place
Kyle drives his truck 429 miles on 33 gallons of gas how many miles can Kyle drive on 1 gallon of gas
Half of the class plays the saxophone and 2⁄5 of the class plays the trumpet. How much of the class plays either the saxophone or the trumpet?
Sketch the region bounded by the curves y=9x3,y=9 and x=0 then find the volume of the solid generated by revolving this region about the x-axis.
The volume of the solid generated is 218.01 cubic units
The curves are given as:
[tex]y = 9x^3[/tex], y = 9
[tex]x = 0[/tex]
Start by calculating x at [tex]y = 9x^3[/tex]
Substitute 9 for y
[tex]9x^3 = 9[/tex]
Divide both sides by 9
[tex]x^3 = 1[/tex]
Take the cube roots of both sides
[tex]x = 1[/tex]
So, the equation of the volume is then represented as:
[tex]V = \pi \int\limits^a_b {9^2 - (9x^3)^2} \, dx[/tex]
[tex]V = \pi\int\limits^a_b {81 - 81x^6} \, dx[/tex]
Where [a,b] = [1,0]
So, we have:
[tex]V = \pi\int\limits^1_0 {81 - 81x^6} \, dx[/tex]
Factor out 81
[tex]V = 81\pi\int\limits^1_0 {1 - x^6} \, dx[/tex]
Integrate
[tex]V = 81\pi [x - \frac 17x^7]|\limits^1_0[/tex]
Expand
[tex]V = 81\pi ([1 - \frac 17(1)^7] - [0 - \frac 17(0)^7] )[/tex]
[tex]V = 81\pi ([1 - \frac 17] )[/tex]
[tex]V = 81\pi * \frac 67[/tex]
So, we have:
[tex]V = 81 * 3.14 * \frac 67[/tex]
[tex]V = 218.01[/tex]
Hence, the volume of the solid generated is 218.01 cubic units
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The weight of outlet boxes is proportional to the volume of boxes involved. if 400 boxes weigh 120 pounds, how much would 500 boxes weigh?
Answer:
150 lbs
Step-by-step explanation:
set up proportion
400/120 = 500/x
cross multiply
120x500 = 400x
then simplify
60000 = 400x
solve for x
60000/400 = x
x = 150
How do you convert 4.2 into a fraction
when rounded to the nearest hundred the number of pupils in a school is 1800 what are the smallest and largest numbers of pupils there could be in a school
Help, I'm bad at math!
A bouncing ball reaches a height of 27 feet at its first peak, 18 feet at its second peak, and 12 feet at its third peak. Describe how a sequence can be used to determine the height of the ball when it reaches its fourth peak.
To determine the height of the bouncing ball at the fourth peak, we recognize a geometric sequence, where each peak's height is two-thirds of the previous peak. Applying this pattern, the height of the fourth peak is found to be 8 feet.
A sequence can be used to determine the height of a bouncing ball when it reaches its fourth peak. You can observe that the heights of the ball at each peak form a sequence, which in this case appears to be decreasing. By analyzing the pattern in the sequence, you can predict the height of the ball at its fourth peak.
A bouncing ball reaches various heights at different peaks which suggests a pattern. To determine the height of the fourth peak, we look at the sequence formed by the heights of the previous peaks. Noticing the pattern, each peak's height is [tex]\frac{2}{3}[/tex] of the previous one.
First peak: 27 feet
Second peak: 18 feet( [tex]27*\frac{2}{3}[/tex])
Third peak: 12 feet ([tex]18*\frac{2}{3}[/tex] )
To find the fourth peak, we continue the pattern:
Fourth peak: 12 feet *[tex]\frac{2}{3}[/tex] = 8 feet
Therefore, the fourth peak would be 8 feet high. By understanding the geometric sequence, we're able to predict future behavior.
Mary's making curtains out of some fabric for five Windows the two larger windows are the same size and the three smaller windows are the same size the one larger window requires 3 3/4 of fabric and one smaller window needs one and one third yard of fabric how many yards of material will Mary need
Marys need a total of 23/2 yard of fabric for his all windows.
What is the arithmetic operator?Arithmetic operators are four basic mathematical operations in which summation, subtraction, division, and multiplication involve.,
Summation = addition of two or more numbers or variable
For example = 2 + 8 + 9
Subtraction = Minus of any two or more numbers with each other called subtraction.
For example = 4 - 8
Division = divide any two numbers or variable called division.
For example 4/8
Multiplication = to multiply any two or more numbers or variables called multiplication.
For example 5 × 7.
Given,
Fabric required in 1 larger window = 3 3/4
⇒ [(4×3)+3] /4 = 15/4
Fabric required in 1 smaller window = 1 1/3
⇒ (3+1)/3 = 4/3
Now,
Mary has 2 larger windows and 3 smaller
So,
Total fabric = 2 Larger + 3 smaller
Total fabric = 2(15/4) + 3(4/3)
Total fabric = 15/2 + 4
Total fabric = 23/2
Hence "Marys need a total of 23/2 yard of fabric for his all windows".
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If a honeybee beats its wings 250 times per second, how many times can it beat its wing in 1 hour?
suppose 255,113 people live in a city is it reasonable to say that about 300,00 live in the city? use the number line to help you solve the problem .
Find the perimeter of square back with vertices A(-4,3), B(2,3) C(2,-3), D(-4,-3)
When markups are based on the selling price, the selling price is
A. cost – markup.
B. the portion.
C. 100% + cost percent.
D. 100%.
When markups are based on the selling price, the selling price is seen as 100% since markup is a percentage of the selling price. The cost and markup together make up 100% of the selling price.
Explanation:When markups are based on the selling price, the selling price can be seen as 100%.
This is because the markup is calculated as a percentage of the selling price rather than the cost of the item.
Assuming that the entire selling price is 100%, the markup portion and the cost portion together make up this 100%.
The cost and markup are represented as percentages of the selling price, so if you know the cost and markup percentages, you can calculate the selling price.
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Solve for y in a=9y+3yx
Answer:
[tex]y=\frac{a}{(9+3x)}[/tex]
Step-by-step explanation:
we have
[tex]a=9y+3yx[/tex]
Solve for y
That means -----> isolate the variable y
Step 1
Factor the variable y in the right side
[tex]a=y(9+3x)[/tex]
Step 2
Divide by [tex](9+3x)[/tex] both sides
[tex]a/(9+3x)=y(9+3x)/(9+3x)[/tex]
Step 3
Simplify
[tex]y=\frac{a}{(9+3x)}[/tex]
Which equation represents a line that passes through (–2, 4) and has a slope of 2/5 ?
Answer:
Y-4 =2/5(x-(-2)) is answer on edge
Step-by-step explanation:
Use point slope equaction y-y1=m(x-x1)
y1= 4 x1= -2 and m= 2/5 just plug in numbers
An elementary school collected 1,705 bottles for a recycling program.a high school also collected some bottles.both schools collected 3,627 bottles combined. Now many bottles did the high school collected
Suppose that you have 8 cards. 5 are green and 3 are yellow. the 5 green cards are numbered 1, 2, 3, 4, and 5. the 3 yellow cards are numbered 1, 2, and 3. the cards are well shuffled. suppose that you randomly draw two cards, one at a time, and with replacement. ⢠g1 = first card is green ⢠g2 = second card is green enter the probability as a fraction. p(g1 and g2)
The probability of drawing a green card on both the first and second draw, with replacement, is 25/64, as each draw is an independent event with the same probability of 5/8 for drawing a green card.
Explanation:The problem is asking us to compute the probability of drawing two green cards in succession, with replacement, from a deck that contains eight cards of which five are green and three are yellow. Since the draws are independent and with replacement, the probability of an event occurring on the first draw is not affected by the second draw, and vice versa.
To calculate the probability of drawing a green card on the first draw, denoted as P(G₁), we look at the number of green cards and the total number of cards. There are 5 green cards out of 8 total cards, so P(G₁) = 5/8.
Because we are replacing the drawn card before the second draw, the probability of drawing a green card on the second draw, denoted as P(G₂), remains the same as for the first draw, thus P(G₂) = 5/8.
The probability of both events happening, denoted as P(G₁ and G₂), is the product of the individual probabilities since the draws are independent. Therefore, we have:
P(G₁ and G₂) = P(G₁) * P(G₂) = (5/8) * (5/8) = 25/64.
Megan sent 12 postcards last week. This week she sent 4 postcards. How many more postcards didn't she sent last week?
Answer:
She sent 8 more postcards last week.
Step-by-step explanation:
Consider the provided information.
Megan sent 12 postcards last week. This week she sent 4 postcards.
We need to find How many more postcards did she sent last week?
To find this simply subtract the numbers as shown:
12-4 = 8
Hence, she sent 8 more postcards last week.
If θ is in Quadrant III and sinθ = -3/5, then cosθ = _____.
Answer:
-4/5
Step-by-step explanation:
plug into equation: sin squared + cos squared = 1 and solve
negative bc cos negative in quad III
A car traveling at a certain speed will travel 76 feet per second. How many miles will the car travel in 3.1 hours if it maintains the same speed? Round to the nearest tenth.
Juanita is making necklaces to give as presents. She plans to put 15 beads on each necklace. Beads are sold in packages of 20. What is the least number of packages she can buy to make necklaces and have no beads left over
You purchased 8 pounds 10 ounces of candy from a candy shop. You want to split it equally among 3 classrooms at a local school.
Answer:
Each classroom will receive 2 pounds and 14 ounces of candy .
Step-by-step explanation:
Given that
Purchased candy= 8 pounds and 10 ounces
First we convert pound into ounces
1 Pound=16 ounces
8 pound = [tex]16\times 8[/tex]
8 pounds= 128 ounces
Now, purchased candy in ounces= 128+10=138 ounces
If we want to distribute purchased candy into three calssroom equally
Therefore, we divide purchased candy by 3
Each classroom receive candy= [tex]\frac{138}{3}[/tex]
Each classroom receive candy=46 ounces
Each classroom receive candy in pounds
16 ounces=1 pound
1 ounces=[tex]\frac{1}{16}[/tex] pounds
46 ounces=2 pounds and 14 ounces
Each classroom receive candy=2 pounds and 14 ounces
Hence, each classroom receive candy =2 pounds and 14 ounces.Use your calculator to evaluate e^-2. Round your answer to three decimal places.
Which statement about the equation is true?
x + 2 = x + 4
a)The equation has no solution.
b)The equation has one solution.
c)The equation has infinitely many solutions.
Yes, the equation has no answer, I took this and there was no solution. hope this helped
What is the number in standard form?
3.23×1012
the sum of twice a number and 15 is -42
What is the distance around a triangle that has sides measuring 2 1/8 ft 3 1/2 ft and 2 and 1/2 ft
jake studied r hours for a big test . julie studied twice as long . write an algebraic expression for how long julie studied