Answer:
a) 18 hours
b) 10 water pumps
Step-by-step explanation:
• We notice that we are in an inverse proportion situation
because when the number of pumps increase the number
of hours taken to fill the tank decrease and vice versa.
Formula :
in an inverse proportional relation :
the product of the two variables = a constant (k)
……………………………………………………………………………
let p be the number of pumps
and h be the number of hours
By applying the formula we get :
p × h = k
Then the constant of proportionality :
k = 6 × 15 = 90
a)
5 × h = 90
Then
h = 90/5
= 18
b)
p × 9 = 90
Then
p = 90/9
= 10
2/10 x 1/9 = 2/90 = 1/?
Answer: 2/90 = 1/45
Step-by-step explanation:
During practice, the players on a softball team warm up by running the bases. This graph shows the relationship between the number of hours, x, of practice the players attend and the number of minutes, y, the players spend running the bases.
How many minutes do the players spend running the bases during each hour of practice?
The number of minutes that the players spend running bases during each hour of practice is the constant of proportionality of the proportional relationship.
What is a proportional relationship?A proportional relationship is defined as follows:
y = kx.
In which k is the constant of proportionality.
In the context of this problem, the variables x and y are given as follows:
Variable x: number of hours.Variable y: time spent running the bases.The equation for the constant is given as follows:
k = y/x.
Representing the hourly time spent running times, you can calculate it taking any point (x,y) on the graph of the function.
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Lynne needs to borrow $5250 for cosmetic surgery. She obtains a loan from her grandmother for 24 months at a simple interest rate of 5.3%. What is the loans future value?
I need the formula explained as well
The future value of the loan is $5807.65.
What do you mean by Interest?It is expressed as a percentage of the amount borrowed and is paid over a specific period of time. The interest rate represents the cost of borrowing money and is one of the key factors in determining the overall cost of a loan. Interest is usually calculated on a yearly basis and can be compounded, meaning that the interest earned on a loan is added to the original principal and the interest rate is then applied to the new, higher amount. This process continues over time, leading to the growth of the original loan amount. The purpose of charging interest is to compensate the lender for the risk they are taking in lending the money and for the opportunity cost of not being able to invest the money elsewhere.
The future value of a loan is equal to the present value plus the interest earned over a specified time period. The formula to calculate the future value of a loan with simple interest is:
FV = PV (1 + rt)
where:
PV is the present value of the loan, which is $5250
r is the interest rate as a decimal, which is 5.3% ÷ 100 = 0.053
t is the time period in years, which is 24 months ÷ 12 months/year = 2 years
Substituting the values into the formula, we get:
FV = $5250 (1 + 0.053 * 2)
FV = $5250 (1.106)
FV = $5807.65
So, the future value of the loan is $5807.65. This is the amount Lynne will have to repay to her grandmother after 24 months, including the interest earned.
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What is the value of y? Type the NUMBER ONLY PLEASE. :) Question 2 options: Question 3 (2 points) Saved m - 14 = 51 What does m equal? Question 3 options: 37 65 55 47
The value of m equals 65.
The correct option is C: 65.
The given equation m - 14 = 51 represents an algebraic equation where m is an unknown variable.
To find the value of m, we need to isolate it on one side of the equation by performing operations that keep the equation balanced.
In this case, we add 14 to both sides of the equation to isolate the variable m. By doing this, we are essentially undoing the subtraction of 14 that was initially done to m, which allows us to obtain the value of m.
The equation m - 14 = 51 can be interpreted as follows: a number (m) decreased by 14 results in 51.
To find the original number (m), we need to undo the subtraction by adding 14 to the result.
This leads to the value of m being equal to 65.
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ABCD is a parallelogram.
The coordinates of point A are (2,5)
x = (4,0) and y = (5,12)
Find the coordinates of points B and C.
Answer:
B(6, 5), C(1, -7)
Step-by-step explanation:
A(2, 5)
From A to B, there is translation x, (4, 0).
Add 4 to A's x-coordinate, and add 0 to A's y-coordinate.
B(2 + 4, 5 + 0) = B(6, 5)
From C to B there is the translation y, (5, 12).
Since we are going from B to C, we undo translation y.
The translation from B to C is (-5, -12).
C(6 - 5, 5 - 12) = C(1, -7)
-8(i - 6) = 32
Solve equation with distributive property
Answer:
i = 2
Step-by-step explanation:
-8(i - 6) = 32
-8i + 48 = 32
-8i = -16
i = 2
Fill in the blank for this question!
While an absolute value may be any number, the output from an absolute value expression is always greater than or equal to zero
How to Interpret an Absolute Value Function?The absolute value | x | of a real number x is defined as the non-negative value of x without regard to its sign. For example, the absolute value of 3 is 3, and the absolute value of −3 is also 3. The absolute value of a number may be thought of as its distance from zero along real number line.
The absolute value of any number is seen to be always greater than or equal to zero. Both a number and its opposite are the same distance from zero on the number line. Since they have the same distance from zero, they have the same absolute value.
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by selling 33m of cloth ,prabha gained the selling price 11 m.what is the gain percent
Answer:
The gain percent is 33.3 %
Step-by-step explanation:
Let the selling price of 1 m cloth is p.
Cost of 33 m = 33 p
gain = cost of 11 m = 11 p
The gain percentage is given by
\(\frac{11 p}{33 p}\times 100\\\\= 33.3 %\)
The gain percent is 33.3 %.
can someone pls help me with my math please
Answer:
A) 75
Step-by-step explanation:
All 3 angles of any triangle add up to 180° so we can subtract all known angles from 180° to get the missing angle.
40°+65°=105°
180°-105°
75°
HELP!!!
Scott and Mark are rock climbing.
Scott is at the top of a 75‑foot cliff, when he throws a 96‑foot rope straight down to Mark, who is on the ground directly below.
If the rope is stretched tightly from Mark’s feet to Scott’s feet, how far over from the base of the cliff s Mark standing?
Answer: 59.98
Step-by-step explanation: :)
The distance between them is 59.92 ft
What is Pythagoras theorem?The Pythagoras theorem which is also referred to as the Pythagorean theorem explains the relationship between the three sides of a right-angled triangle.
Given that, a scenario that is making an arrangement of a right-angled triangle, we need to find the base, [refer to the figure attached]
So, here we will use the Pythagoras theorem
75²+base² = 96²
base² = 96²-75²
base = √3591
base = 59.92
Hence, the distance between them is 59.92 ft
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Find x
Pleasee! Help! Soon!
Answer: \(x = \frac{7\sqrt{6}}{2}\\\\\)
==============================================================
Explanation:
Focus on the upper triangle. This is a 30-60-90 triangle. The short leg is 7 and the long leg is \(7\sqrt{3}\). The long leg is always sqrt(3) times that of the short leg (and this only works for 30-60-90 triangles).
In short, the horizontal length is \(7\sqrt{3}\) units long.
Now move to the lower triangle. This is a 45-45-90 triangle with congruent legs (each are x units long). We just found the hypotenuse is \(7\sqrt{3}\)
We can use the pythagorean theorem to say the following:
\(a^2 + b^2 = c^2\\\\x^2 + x^2 = (7*\sqrt{3})^2\\\\2x^2 = 147\\\\x^2 = \frac{147}{2}\\\\x = \sqrt{\frac{147}{2}}\\\\x = \frac{\sqrt{147}}{\sqrt{2}}\\\\x = \frac{\sqrt{147}*\sqrt{2}}{\sqrt{2}*\sqrt{2}}\\\\x = \frac{\sqrt{147}*\sqrt{2}}{2}\\\\x = \frac{\sqrt{147*2}}{2}\\\\x = \frac{\sqrt{294}}{2}\\\\x = \frac{\sqrt{49*6}}{2}\\\\x = \frac{\sqrt{49}*\sqrt{6}}{2}\\\\x = \frac{7\sqrt{6}}{2}\\\\\)
Find the length of the unknown side. Round your answer to the nearest tenth.
17 m
15 m
Answer:
Step-by-step explanation:
17.5
Answer:
a = 8 m.
Step-by-step explanation:
This is a right triangle, so the Pythagorean Theorem applies.
The Pythagorean Theorem states that the legs of a triangle, squared, equals the hypotenuse, squared.
The legs of a triangle are the sides that make the right angle.
The hypotenuse is the longest side of a right triangle.
Here, I am solving for one of the legs.
\(formula=a^2+b^2=c^2\)
\(a, b = legs\)
\(c=hypotenuse\)
\(a^2+15^2=17^2\)
\(a^2+225=289\)
\(289 - 225 = 64\)
\(a^2=64\)
\(a=8\)
use exponential fitting to find a closed formula for the sequence: 4, 5, 7, 11, 19, 35, 67, ...
The exponential form of the given sequence is - \(t_n\) = \(t_(n-1)\) + \(2^x\) where x is a set of whole numbers and n is a set of natural numbers.
The given sequence is - 4, 5, 7, 11, 19, 35, 67, ...
the first term - \(t_1\) is 4
Hence, we can write the sequence as follows-
4 + \(2^0\) = 5
5+\((2)^1\)=7
7+\((2)^2\)=11
11+\((2)^3\)=19
and so on.
Here, we are adding the previous term with the exponential form of 2.
thus, we can conclude that -
\(t_n\) = \(t_(n-1)\) + \(2^x\)
where, x is a set of whole numbers, and n is a set of natural numbers.
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Robert can complete 10 inspections in 8 hours. Which represents the unit rate for the number of inspections he completes per hour?
Answer: 5 inspections in 4 hours, because if its 8 hours it would be 10 inspections
Step-by-step explanation:
Answer:
1.25
Step-by-step explanation:
10 ÷ 8 = 1.25
Khan academy pls help!
Answer:
The answer is b
Step-by-step explanation:
2/5 of employees in a company drive to work, 1/3 travel by bus and the rest walk. 1. Find the fraction of who walk.
Answer:
4/15
Step-by-step explanation:
2/5 drive
1/3 bus
and rest walk
fraction of those who walk is 1-(2/5+1/3)
2/5+1/3=(6+5)/15=11/15
15/15-11/15=4/15
There are 40 tables set up at school for the annual pancake breakfast. Each table is 6 feet long an 2 feet wide. The students plan to cover each table with a paper tablecloth that extends an extra 3 inches over each edge.
What is the total AREA of the paper needed to cover all the tables? express the answer in square feet. (HINT: NOT A DECIMAL ANSWER) PLEASE HELP ME
Solve 0.5(y-9) = 22.5
Answer:
=54
Step-by-step explanation:
- Combine multiplied terms into a single fraction
0.5(-9)=22.51(−9)2=22.52
- Multiply by 1
- Multiply all terms by the same value to eliminate fraction denominators
- Cancel multiplied terms that are in the denominator
- Multiply the numbers
- Add 999
- to both sides of the equation
- Simplify
A board that measures 19.5 meters in length is cut into two pieces. One piece measures 7.2 meters. What is the length of the other piece?
The required length of the other piece of the board is 12.3 meters.
What is simplification?The process in mathematics to operate and interpret the function to make the function or expression simple or more understandable is called simplifying and the process is called simplification.
Here,
To find out the length of the other piece we need to subtract the length of one piece from the original length of the board,
So,
Length of the other piece = 19.5 - 7.2 meters
= 12.3 meters
Thus, the required length of the other piece of the board is 12.3 meters.
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Laws of Exponents, urgent please need the answers right away, thank you!!
solve it both and show the step by step!
The values of the expressions are;
z³³
d⁻¹⁶
How to simply the exponentsNote that index forms are described as forms used in the representation of numbers or variables too large or small.
Some rules of index forms are;
Add the exponents when multiplying like basesSubtract the exponents when dividing like basesThen, from the information given, we have that;
(z⁻⁴/z⁶ × z⁵/z⁻⁶)⁻¹¹
Subtract the exponents, we have;
(z⁻² × z⁻¹)⁻¹¹
expand the bracket
z²² ⁺ ¹¹
z³³
(d⁴)⁻³/(d⁶)⁻² ÷ (d⁴/d⁶)⁻⁸
expand the brackets
d⁻¹²/d¹² ÷ (d⁻²)⁻⁸
subtract the exponents
d⁰ ÷ d¹⁶
d⁻¹⁶
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A box-and-whisker plot. The number line goes from 0 to 9. The whiskers range from 0 to 7, indicated by A and E. The box ranges from 2 to 6, indicated by B and D. The line divides the box at 4, indicated by C.
Identify the location of the values used to create a box plot.
A =
✔ minimum value
B =
✔ lower quartile
C =
✔ median
D =
✔ upper quartile
E =
✔ maximum value
minimum value: 1
lower quartile: 3
median of the data: 6
upper quartile: 8
maximum value: 14
Sorry for the late answer, i hope this will help you in the future and everyone else who reads this.
Which of the following z-scores is NOT outside the middle 68% of the data for a normal distribution?
a.) -0.8
b.) -2.8
c.) 1.8
d.) 3.8
Answer:
Step-by-step explanation:
A, use three_digite rounding arithmetic to compute 13- 6 and determine the absolute,relative ,and percentage errors.
tepeat part (b) using three – digit chopping arithmetic.
Solve equation with rational exponents. Check all proposed solutions.
8x^3/2-56=0
Answer: x=3√14
Step-by-step explanation:
Carpetland carpet installers incur an average cost of $300 for each carpet installed. Joan Chin, the firm’s vice president, proposes a new procedure for installations, which she hopes will be more efficient. Joan plans to run a trial and hopes that the results of a trial period will enable her to conclude with a level of significance of 0.05 that the new procedure reduces the average cost to install a carpet. If Joan's hypothesis test results in a Type II error, what would this mean?
Answer:
A Type II error happens when the null hypothesis failed to be rejected, although it is false and the alternative hypothesis is true.
In this context, would be that the test does not give enough evidence to support the claim that the new procedure reduces the average cost, although it really does reduces it.
The new procedure is effective, but the sample does not give enough evidence.
Step-by-step explanation:
7+2x/3=5
what is x ?
Answer:
x = -3
Step-by-step explanation:
7 + 2x/3 = 5
7*3 + 2x = 5*3 ( we multiply by 3 to remove the denominator )
21 + 2x = 15
2x = 15 - 21
2x = -6
x = -6/2
x = -3
Answer:
X=4
Step-by-step explanation:
Times both side by 3
then you get 7+2x=15
then minus 7 from both sides
2x=8
divide by 2
x=4
12 is 58% of what number?
Also can you explain how to solve these problems?
Answer:
20.68976
Step-by-step explanation:
Convert the percentage into decimal :
58% = 0.58
0.58 × x = 12
Divide both sides by 0.58 :
x = 12÷0.58
x = 20.689655...
x = 20.68976
So the method to these types of question is to make the question into an equation by converting the percentage into a decimal, rearrange to make the unknown number the subject and solve .
Hope you understood and have a good day
Find the general form of the equation of a hyperbola with vertices at (-2, 5) and (6, 5) and foci at (-3, 5) and (7, 5). A. 16x2 - 9y2 - 160x + 36y - 508 = 0 B. 9x2 - 16y2 - 36x + 160y - 508 = 0 C. none of these D. 3x2 - 16y2 - 12x + 160y - 532 = 0
The general form of the equation of the hyperbola with the given information is \(9x^2 - 16y^2 - 36x + 160y - 508 = 0\). The equation can be determined by first finding the center of the hyperbola, which is (2, 5), and the distance between the foci, which is 4.
The general form of the equation of a hyperbola can be determined from the given information. The vertices of the hyperbola are given as (-2, 5) and (6, 5). The foci of the hyperbola are given as (-3, 5) and (7, 5). The first step in finding the equation of the hyperbola is to determine the center of the hyperbola. The center of the hyperbola can be calculated by taking the average of the x-coordinates of the vertices and then the average of the y-coordinates of the vertices. The center of the hyperbola is then (2, 5). The distance between the foci of the hyperbola is 4. This distance can be calculated by subtracting the x-coordinates of the foci and then subtracting the y-coordinates of the foci. The standard equation for a hyperbola can then be formed by substituting the center coordinates and the distance between the foci into the equation. The resulting equation is \(9x^2 - 16y^2 - 36x + 160y - 508 = 0\). This equation is the general form of the equation of the hyperbola with the given
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iwidncuhbcffbhbhvfrhur3huivr4hiuvriuvfruvfiuvfjivfrjiovrjiovfriojvrfjiovfiovrfmvr mkormkvmkvkmorbemoivbe
Answer:
3.14159265358979
Step-by-step explanation:
What is -20/2(7 2/3)
The simplified form of -20/2(7 2/3) is -230/3.
To solve the expression -20/2(7 2/3), we need to follow the order of operations, which states that we should perform the operations inside parentheses first, then any multiplication or division from left to right, and finally any addition or subtraction from left to right.
First, let's convert the mixed number 7 2/3 to an improper fraction.
7 2/3 = (7 * 3 + 2) / 3 = 23/3
Now, let's substitute the value back into the expression:
-20/2 * (23/3)
Next, we simplify the multiplication:
-10 * (23/3)
To multiply a fraction by a whole number, we multiply the numerator by the whole number:
-10 * 23 / 3
Now, we perform the multiplication:
-230 / 3
Therefore, the simplified form of -20/2(7 2/3) is -230/3.
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PLEASE ANSWER THIS QUESTION RIGHT PLEASE Devante Has a lunch account in the school cafeteria. His starting balance at the beginning of the month is $35.50 The first week Devante But three lunches and his account balance was$28. The second week Devante  Bought five lunches and his account balance was $15.50 in a model that relates the balance of his lunch account as a function of the number of lunches he buys what does the rate of change represent? THE ANSWER CHOICES ARE IN THE PICTURE ABOVE
Answer:
C) The amount of money in his lunch account
Step-by-step explanation: