5v + 7f =28.70 if f is 2.85
5v+7(2.85)=28.70
5v+19.95 = 28.70
5v = 8.75
v = 1.75
Solve the equation: 2.6 = -0.2t
Identify the value of y
24^2 = 18 * (18 +y)
576 = 324+18y
252 =18y
y = 252/18 =14
y = 14
The value of y is 14.
What is a circle?'A circle is a shape consisting of all points in a plane that are at a given distance from a given point, the center. Equivalently, it is the curve traced out by a point that moves in a plane so that its distance from a given point is constant'
According to the given problem,
We know,
⇒ 18 ( 18 + y ) = 24²
⇒ 324 + 18y = 576
⇒ 18y = 576 - 324
⇒ 18y = 252
⇒ y = 252/18
⇒ y = 14
Hence, we can conclude, the value of y is 14.
Learn more about circle here: https://brainly.com/question/11833983
#SPJ2
Julio paid 1.3 times his normal hourly rate for each he works over 31 hours in a week. Last week he worked 35 hours and earned $448.88. What is julios normal hourly rate ?
Suppose i pick a jelly bean at random from a box containing two red and ten blue ones. i record the color and put the jelly bean back in the box. if i do this three times, what is the probability of getting a blue jelly bean each time? (round your answer to three decimal places.)
In how many ways can 2 singers be selected from 4 who came to an audition?
A. 6
B. 2
C. 12
D. 4
In a batch of 280 water purifiers, 12 were found to be defective. What is the probability that a water purifier chosen at random will be defective? Write the probability as a percent. Round to the nearest tenth of a percent if necessary.
A. 4.3%
B. 5.6%
C. 95.7%
D. 71.8%
Answer: A. 6
A. 4.3%
Step-by-step explanation:
The total number of singers = 4
To choose singers = 2
The number of ways to choose 2 singers from 4= [tex]^4C_2=\frac{4!}{2!(4-2)!}=3\times2=6[/tex]
Hence, A is the right option.
The total number of water purifiers T= 280
The number of defective purifiers D= 12
The probability that a water purifier chosen at random will be defective (in percent)=[tex]\frac{\text{T}}{\text{D}}\times100[/tex]
[tex]=\frac{12}{280}\times100\\=0.042857\times100\\=4.2857\%\approx4.3\%[/tex]
Hence, A is the right option.
I don't understand this and would appreciate an explanation as well :)
Solve for the variable in the equations below.
Round your answers to the nearest hundredth.
Do not round any intermediate computations.
e^x = 6
4^(y+3) = 3
[tex]e^x = 6[/tex]
[tex]4^y^+^3 = 3 [/tex]
(02.03 MC)
The figure shows two triangles on a coordinate grid:
What set of transformations is performed on triangle ABC to form triangle A'B'C'?
A.. A 180-degree counterclockwise rotation about the origin, followed by a translation 5 units down
B. A translation 5 units down followed by a 180-degree counterclockwise rotation about the origin
C. A 270-degree counterclockwise rotation about the origin, followed by a translation 5 units to the right
D. A translation 5 units to the right, followed by a 270-degree counterclockwise rotation about the origin
Which rate is the lowest price?
$6.30 for 9
$5.50 for 5
$4.20 for 7
$0.80 each
What is 5 plus 5 minus 5 divided by 5 and then multiplied by 5?
Answer:
45Step-by-step explanation:
[tex](5+5-5:5)\cdot5\\\\\text{Use PEMDAS}\\\\\text{P Parentheses first}\\\text{E Exponents}\\\text{MD Multiplication and Division (left-to-right)}\\\text{AS Addition and Subtraction (left-to-right)}\\\\=(5+5-1)\cdot5\\\\=(10-1)\cdot5\\\\=9\cdot5\\\\=45[/tex]
The area of the right triangle shown is 24 square feet. Which equations can be used to find the lengths of the legs of the triangle? Check all that apply.
0.5(x)(x + 2) = 24
x(x + 2) = 24
x2 + 2x – 24 = 0
x2 + 2x – 48 = 0
x2 + (x + 2)2 = 24
x2 + (x + 2)2 = 100
Please help me quickly, I really need the help. I'll even mark brainiest if you do it correctly. I really need this and I need whoever does this to pay attention to the whole "Check all that apply". I'm adding the picture below.
The equation that can be used to find the lengths of the legs of the triangle is [tex]\rm 0.5(x)(x + 2) = 24[/tex]
Given thatThe area of the right triangle shown is 24 square feet.
We have to determine
Which equations can be used to find the lengths of the legs of the triangle?
According to the question
From the given figure the base of the triangle is x.
And the height of the triangle is (x+2).
What is the area of a triangle?The area of the triangle is given by half the product of the height and base.
[tex]\rm Area = \dfrac{1}{2} \times base \times height\\ [/tex]
Substitute all the values in the formula;
[tex]\rm Area \ of \ right \ triangle= \dfrac{1}{2} \times base \times height\\ \\ \rm 24= \dfrac{1}{2} \times x \times (x+2)\\\\ \rm 0.5(x)(x + 2) = 24[/tex]
The equation can be used to find the lengths of the legs of the triangle is [tex]\rm 0.5(x)(x + 2) = 24[/tex].
Hence, the equation can be used to find the lengths of the legs of the triangle is [tex]\rm 0.5(x)(x + 2) = 24[/tex].
To know more about the Area of the Triangle click the link given below.
https://brainly.com/question/15442893
Determine the standard variation of the data below. (1, 2, 3, 4, 5)
Answer:
So basically sqrt of 2...
Step-by-step explanation:
A school director must randomly select 6 teachers to participate in a training session. There are 34 teachers at the school. In how many different ways can these teachers be selected, if the order of selection does not matter?
The function f(x) = –x2 + 16x – 60 models the daily profit, in dollars, a shop makes for selling candles, where x is the number of candles sold, and f(x) is the amount of profit.
Part A: Determine the vertex. What does this calculation mean in the context of the problem? (5 points)
Part B: Determine the x-intercepts. What do these values mean in the context of the problem? (5 points
please help
Final answer:
The vertex of the profit function f(x) = -x^2 + 16x - 60 is (8, 4), meaning the maximum profit is $4 when 8 candles are sold. The x-intercepts are (6,0) and (10,0), indicating zero profit when either 6 or 10 candles are sold.
Explanation:
The function given is a quadratic equation of the form f(x) = ax2 + bx + c, where the constants are a = -1, b = 16, and c = -60. To find the vertex of the parabola, we can use the formula -b/(2a) for the x-coordinate of the vertex.
Calculate the x-coordinate of the vertex: x = -b/(2a) = -16/(2 * -1) = 8.
Substitute x = 8 into the original function to find the y-coordinate: f(8) = -(8)2 + 16(8) - 60 = -64 + 128 - 60 = 4.
The vertex is at the point (8, 4). In the context of the problem, this point represents the maximum daily profit of $4, which occurs when 8 candles are sold.
To determine the x-intercepts, we set f(x) to zero and solve for x, which represents the number of candles sold when the profit is zero.
Set the function equal to zero and solve for x: 0 = -x2 + 16x - 60.
Apply the quadratic formula x = [-b ± sqrt(b2 - 4ac)]/(2a) to find the x-intercepts. In this case, a = -1, b = 16, and c = -60.
Calculate the discriminant, sqrt(162 - 4(-1)(-60)) = sqrt(256 - 240) = sqrt(16) = 4.
Find the two x-intercepts: x = [16 ± 4]/(2 * -1) which yields x = 6 and x = 10.
The x-intercepts (6,0) and (10,0) indicate the number of candles sold at which the profit would be zero, specifically at 6 and at 10 candles sold.
Meike earned $1565 in tips while working a summer job at a coffee shop. She wants to use this money to take a trip to Europe next summer. If she places the money in an account which pays 6.5% compounded continuously, how much money will she have in nine months?
A new machine can make 10,000 aluminum cans three times faster than an older machine. with both machines working, 10,000 cans can be made in 9 hours. how long would it take the new machine, working alone, to make the 10,000 cans?
Since the new machine is three times faster, it takes (12 hours) / 3 = 4 hours for the new machine to make 10,000 cans alone.
Let's denote the time it takes the older machine to make 10,000 cans as "t" hours.
The new machine can make 10,000 cans three times faster than the older machine, which means it takes "t/3" hours for the new machine to make 10,000 cans.
When both machines are working together, they can make 10,000 cans in 9 hours.
Now, we can set up an equation based on the work rates of the two machines:
Work rate of the older machine + Work rate of the new machine = Combined work rate
The work rate is the amount of work (number of cans made) per unit of time (hours).
For the older machine:
Work rate of the older machine = 10,000 cans / t hours
For the new machine:
Work rate of the new machine = 10,000 cans / (t/3) hours
Combined work rate when both machines work together:
Combined work rate = 10,000 cans / 9 hours
Now, the equation becomes:
10,000 cans / t hours + 10,000 cans / (t/3) hours = 10,000 cans / 9 hours
To solve for "t," we can start by finding a common denominator for the fractions on the left side of the equation:
t/3 is the same as (1/3)t. So the equation becomes:
10,000 cans / t hours + 10,000 cans / (1/3)t hours = 10,000 cans / 9 hours
Now, to combine the fractions, we find the common denominator, which is 3t:
(3t * 10,000 cans) / (3t * t hours) + (t * 10,000 cans) / (3t * t hours) = 10,000 cans / 9 hours
(30,000t + 10,000t) / (3t^2 hours) = 10,000 cans / 9 hours
Combine the terms on the left side of the equation:
40,000t / (3t^2 hours) = 10,000 cans / 9 hours
Now, cross-multiply to solve for "t":
40,000t * 9 hours = 10,000 cans * 3t^2 hours
360,000t hours = 30,000t^2 hours
Now, rearrange the equation:
30,000t^2 - 360,000t hours = 0
Divide by 30,000t to simplify the equation:
t - 12 = 0
Now, solve for "t":
t = 12 hours
Therefore, it takes the older machine 12 hours to make 10,000 cans.
To know more about machine:
https://brainly.com/question/2641982
#SPJ2
(02.05 MC)
Triangle ABC is transformed to obtain triangle A′B′C′:
Which statement is correct for Triangle ABC. and Triangle A prime B prime C prime.?
Triangle ABC is similar to triangle A prime B prime C prime., because Triangle A prime B prime C prime. is obtained by dilating Triangle ABC. by a scale factor of 1 over 6. and then rotating it about the origin by 90 degrees
Triangle ABC is similar to triangle A prime B prime C prime., because Triangle A prime B prime C prime. is obtained by dilating Triangle ABC. by a scale factor of 1 over 3. and then rotating it about the origin by 180 degrees
Triangle ABC is similar to triangle A prime B prime C prime., because Triangle A prime B prime C prime. is obtained by dilating Triangle ABC. by a scale factor of 1 over 3. and then rotating it about the origin by 90 degrees
Triangle ABC is similar to triangle A prime B prime C prime. because triangle A prime B prime C prime. is obtained by dilating Triangle ABC.by a scale factor of 1 over 4. and then rotating it about the origin by 180 degrees
HELPPP Plzzzzzzzzzz ASAP
Use Addition of Composite Figures to find the total shaded regions.
1) Find the shaded area. Round your answer to the nearest tenth, if necessary.
Martin is asked to find the probability of getting one head and three tails on for coin tosses this is a simple event
Answer: False
Martin is asked to find the probability of getting one head and three tails on for coin tosses this is a simple event.
A. True
B. False
A store's cost for a stereo was $27. The markup was 75%. A customer purchased it on sale at 40% off the markup price. What was the purchase price of the stereo
Find the length of the diameter of a sphere with a surface area of 452.39^2 ft.
surface area = 4*pi*r^2
using 3.14 for pi
452.39 = 4*3.14*r^2=
452.39=12.56* r^2
r^2 = 452.39/12.56 = 36.0
sqrt(36) = 6= r
diameter = 2r = 6*2= 12
diameter = 12 feet
For a fixed amount of a gas at a constant temperature, the volume of the gas is inversely proportional to its pressure. At a pressure of 30 pounds per square inch (psi), a gas has a volume of 600 in.3. Which function can be used to model the volume of the gas y, in cubic inches, when the pressure is x psi?
we know that
A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form [tex]y*x=k[/tex] or [tex]y=k/x[/tex]
Let
x-------> the pressure in PSI
y------> the volume of the gas in cubic inches
In this problem we have the point [tex](30,600)[/tex]
so
[tex]x=30\ psi\\y=600\ in^{3}[/tex]
Find the constant k
[tex]y*x=k[/tex]
substitute the values of x and y
[tex]600*30=k[/tex]
[tex]k=18,000\ lb*in[/tex]
the equation is
[tex]y=18,000/x[/tex]
therefore
the answer is
[tex]y=18,000/x[/tex]
Answer:
[tex]y=\frac{18000}{x}[/tex]
Step-by-step explanation:
Let the volume of gas be y
Let the pressure be x
Since we are given that the volume of the gas is inversely proportional to its pressure.
⇒[tex]y \propto \frac{1}{x}[/tex]
Let the proportionality be k
So, [tex]y=\frac{k}{x}[/tex] ---A
Now we are given that At a pressure of 30 pounds per square inch (psi), a gas has a volume of 600 cubic inches
So, substitute x = 30
y = 600
[tex]600=\frac{k}{30}[/tex]
[tex]600 \times 30=k[/tex]
[tex]18000 =k[/tex]
Substitute the value of k in A
So, [tex]y=\frac{18000}{x}[/tex]
Hence function can be used to model the volume of the gas y, in cubic inches, when the pressure is x psi is [tex]y=\frac{18000}{x}[/tex]
State the Midpoint formula?
How are the midpoint formula and the Distance formula alike? How are they different?
Give a real-world example that could be addressed using the distance formula.
Give a real-world example that could be addressed using the midpoint formula.
Three times the difference of a number x and seven is twenty-three minus the sum of three times a number x and two. what is the value of x?
The required value of x is 7.
What are linear equation?A linear equation only has one or two variables. No variables in a linear equation is raised to power greater than 1 or used as denominator of a fraction.
Now the given statement is,
Three times the difference of a number x and seven is twenty-three minus the sum of three times a number x and two.
So converting them into numerical form,
the difference of a number x and seven = x - 7
∴ Three times the difference of a number x and seven = 3(x - 7)
Similarly,
the sum of three times a number x and two = 3x + 2
∴ Twenty-three minus the sum of three times a number x = 23 - (3x + 2)
Therefore, the required equation is,
3(x - 7) = 23 - (3x + 2)
Expanding the brackets we get,
3x - 21 = 23 - 3x - 2
or, 3x - 21 = 21 - 3x
Taking alike terms together,
3x + 3x = 21 + 21
or, 6x = 42
Dividing both side by 6 we get,
x = 7
which is the required value of x.
Thus, The required value of x is 7.
To learn more about linear equations :
brainly.com/question/16584198
#SPJ6
Apply the distributive property to factor out the greatest common factor. 45+75=
16% of what number is 17 ?
Step-by-step explanation:
To find out what 16% of 17 is, we create a cross multiply equation
16/100=17/x
Cross multiply
(16 * x = 16x)
(100 * 17 = 1700)
16x = 1700
1700/16 = 106.25
I need to find the answer to these questions in about 10 minutes or I'm screwed. please help me out.
A wire is first bent into the shape of a rectangle with width
4in and length 14in. Then the wire is unbent and reshaped into a square. What is the length of a side of the square?
The city of Lakeside has a population of 22,000 people and is decreasing at a rate of 1.5% The population in 3 years would be
A)Approximately 21,000 people
B)None of the choices are correct
C)Approximately 20,000 people
D)Approximately 25,000 people
E)Approximately 19,000 people
Which is a sum of cubes? a3 + 18 a6 + 9 a9 + 16 a12 + 8
a3 + 18
a6 + 9
a9 + 16
a12 + 8
Answer: [tex]a^{12}+8[/tex]
Step-by-step explanation:
let's check all the expressions
1. [tex]a^3+18[/tex]
here 18 is not a perfect cube.
2. [tex]a^6+9[/tex]
here 9 is not a perfect cube.
3.[tex]a^9+16[/tex]
here 16 is not a perfect cube.
4.[tex]a^{12}+8[/tex]
here 8 is a perfect cube, thus we can write above expression by using laws of exponents as
[tex](a^4)^3+2^3[/tex]
Thus, [tex]a^{12}+8[/tex] is a sum of cubes.