The standard form of the equation, 3y = 9x -12, is -5x + y = 0.5. The correct option is the third option -5x+y=0.5
Writing an equation is standard formFrom the question, we are to write the given equation is standard form.
The given equation is
y = 5x + 0.5.
The standard form of a linear equation is
Ax + By = C
Where A, B, and C are constants
x and y are variables
Now, we will write the given equation is the standard form of a linear equation.
y = 5x + 0.5
Subtract 5x from both sides of the equation
y - 5x = 5x - 5x + 0.5
y - 5x = 0.5
Rewrite the equation, so that it would correspond to the standard form of a linear equation
-5x + y = 0.5
Hence, the standard form is -5x + y = 0.5
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(-42n+28p)(-1/4) simplify. Assume that no denominator equals zero
The value of (-42n+28p)(-1/4) is 249n/4
What are fractions?A fraction represents a part of a whole or, more generally, any number of equal parts. A fraction describes how many parts of a certain size there are, for example, one-half, three-fifths, three-quarters.
A fraction has a denominator and numerator. There are three types of fraction. Proper, improper and mixed fraction
Opening the parentheses of the equation
(-42n+ 28p)(-1/4).
= -42n× -1/4+ 28× -1/4
= (42n×-7)/4
= -294n/4
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MODELING REAL LIFE The diagram shows the prices of two
types of ground-cover plants. A gardener can afford to buy 125
vinca plants and 60 phlox plants.
$1.20/plant Vinca $2.50/plant Phlox
a. Write an equation in standard form that models the possible
combinations of x vinca plants and y phlox plants the gardener
can afford to buy.
An equation that models the possible combinations is:
___ = 300.
Please help!
a.
A gardener can afford to buy 125 vinca plants and 60 phlox plants. $1.20/plant Vinca $2.50/plant Phlox.
The equation in standard form that models the possible combinations of x vinca plants and y phlox plants the gardener can afford to buy is
⇒ $1.20*x + $2.50*y
b.
An equation that models the possible combinations is
⇒ $1.20*125 + $2.50*60 = 300
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What is the area of a circle with a diameter of 5 feet? Round to the nearest thousandth.
A pack of cards is shuffled and a card is chosen at random.
What is the probability of getting a black card?
Answer:
[tex]\dfrac{1}{2}[/tex]
Step-by-step explanation:
Probability:Number of cards = 52
Number of black cards = 13 (club) + 13 (spade)
= 26
[tex]\sf P(\text{getting a black card})=\dfrac{26}{52}[/tex]
[tex]\sf =\dfrac{1}{2}[/tex]
Suppose a large shipment of stereos contained 18% defectives. If a sample of size 306 is selected, what is the probability that the sample proportion will differ from the population proportion by more than 6%? Round your answer to four decimal places.
The probability that the sample proportion of a large shipment of stereos will differ from the population proportion by more than 6% is 0.0063
How to get the required probabilityThe probability is calculated using z score, this is used to determine the amount of standard deviations a sample, X is from the mean
The z score is given by the formula
z = (X - μ) / σ
Definition of variables
mean, μ = p = 18% = 0.18
sample size, n = 306
standard deviation, σ
= √{(p(1 - p)) / n}
= √{(0.18(1 - 0.18)) / 306}
= √{(0.18 * 0.82) / 306}
= 0.02196
The probability
differ from the population proportion by less than 3%
|X - 0.18| > 0.06
X < 0.12 OR X > 0.24
P(z < 0.12) + P(z > 0.24 )
z score for z < 0.06
z = (0.12 - 0.18) / 0.02196
= -2.7322
p value for z < -2.7322 = 0.003146
z score for z > 0.06
z = (0.24 - 0.18) / 0.02196
= 2.7322
p value for z > 2.7322 = 1 - 0.99685 = 0.003146
The probability required = 0.003146 + 0.003146 = 0.006292 = 0.63%
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(7x-7)
63°
(3x +45)
(9-4)
Find x and y
Answer:
x+7=4/3x-1/3 One solution was found : x = 22 Rearrange: Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : ... 3x-9/4x-12: correct answer right here
Step-by-step explanation:
Name the image of R(1, 2) after a 270 rotation about (0, - 2)
The image after a 270 rotation is (4, -3)
How to determine the image after rotation about a point?
If the point of rotation is not the origin, the steps are as follows:
1. Subtract the point of rotation off each vertex point of
the shape
2. Rotate as you would around the origin
3. Add the point of rotation back to each vertex point of
the shape
Given: R(1, 2) after a 270 rotation about (0, - 2)
step1: (1-0, 2-(-2)) = (1, 4)
step 2: For rotation about the origin through 270°, the image is (y, -x). Thus, (1, 4) => (4, -1)
step 3: (4, -1) => (4+0, -1+(-2) ) = (4, -3)
Therefore, the image of R(1, 2) after a 270 rotation about (0, - 2) is (4, -3)
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Sanjay and his paving crew laid 40 yards of new pavement. Jack and his crew just took over, and they can lay 15 yards of new pavement per hour.
Write an equation that shows the relationship between the number of hours Jack's crew works, x, and the total number of yards of pavement laid, y.
The equation that shows the relationship between the number of hours Jack's crew works, x, and the total number of yards of pavement laid, y will be;
⇒ y = 40 + 15x
What is an expression?
Mathematical expression is defined as the collection of the numbers variables and functions by using operations like addition, subtraction, multiplication, and division.
Given that;
Sanjay and his paving crew laid 40 yards of new pavement.
And, They can lay 15 yards of new pavement per hour.
Now,
Let the number of hours Jack's crew works = x
And, The total number of yards of pavement laid = y
Hence, We can formulate;
An equation that shows the relationship between x and y will be;
y = 15x + 40
Thus, The equation that shows the relationship between the number of hours Jack's crew works, x, and the total number of yards of pavement laid, y will be;
⇒ y = 40 + 15x
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Find the distance between the points (8,–2) and (8,7)
Answer:
9 units
Step-by-step explanation:
We see that on the x-axis, everything is equal.
On the y-axis, there are -2 and 7.
So we are finding the distance between -2 and 7
|-2|+|7|=9
So the distance between the points is 9 units.
In tic-tac-toe, a 3 by 3 grid is filled with X's and O's. How many ways is there to fill the grid so that there is at least 4 of each symbol in the grid?
The number of ways to fill the tic-tac-toe grid, with at least 4 of each symbol in the grid, using the arrangements formula, is of:
252.
What is the arrangements formula?The number of possible arrangements that can be chosen from a set of n elements is given by the factorial of n, as follows:
[tex]A_n = n![/tex]
When the elements arranged can be repeated, the number of arrangements is presented as follows:
[tex]A_{n}^{n_1, n_2, \cdots, n_n} = \frac{n!}{n_1! \times n_2! \cdots n_3!}[/tex]
In which [tex]n_1, n_2, \cdots, n_n[/tex] represent the number of repetitions of each element.
For the tic-tac-toe grid, we have that the possible ways to organize the nine positions with at least four instances of each symbol is given as follows:
5 X's and 4 O's.4 X's and 5 O's.Hence the number of ways to fill up the grid is given as follows:
[tex]\frac{9!}{5!4!} + \frac{9!}{4!5!} = 2 \times 156 = 252[/tex]
Thus 252 ways to fill up the grid.
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4y=16x-4 in standard form?
The standard form of linear equation is 4x - y = 1.
What is the standard form of a linear equation?
Ax+By=C is the usual form for two-variable linear equations. A standard form linear equation is, for instance, 2x+3y=5. When an equation is given in this format, finding both intercepts is rather simple (x and y).
The slope intercepts form a linear equation is y = mx + c, where m is the slope and c is y-intercept of the line.
Given linear equation is:
4y=16x-4
Subtract 16x from both sides:
4y - 16x = -4
Divide both sides by -4
-y + 4x = 1
4x - y = 1
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A client is to receive 1,800 mL of fluid during a 24-hour period. The client is to receive 3/4 of the fluid between 7 AM and 10 PM. Calculate how many mL the client will drink during that time
Answer:
1350 ml
Step-by-step explanation:
(1800 : 4) * 3
450 * 3
1350 ml
The radioactive substance cesium-137 has a half-life of 30 years. The amount At (in grams) of a sample of cesium-137 remaining after t years is given by the following exponential function.
=At26612t30
Find the initial amount in the sample and the amount remaining after 80 years.
Round your answers to the nearest gram as necessary.
r=6%
t=6years
I=480,00
p=?
Answer:
I=PRT/100
I100=PRT dbs by Rt
l100/RT = P
48000*100/6*6
P=
its in the picture♡
Answer:A. (10 x 3) + 8
Answer:
A : ( 10 * 3 ) + 8
Hope this helps!
Step-by-step explanation:
10 friends, each donate 3 pieces of clothing, ( 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 ) or ( 10 * 3 ), plus the 8 pieces of clothing Emily is donating. ( 10 * 3 ) + 8.
A car can travel
198 miles on 9
gallons of
gasoline. How
much gasoline will
it need to go 462
miles?
Answer:
21 gallons
Step-by-step explanation:
[tex]\frac{9}{198} \times 462 \\ \\ =\frac{462}{22} \\ \\ =21[/tex]
Part (a) and part (b).
The time spent exercising for a student who spends 6 hours texting is 6 hours.
The scatter plot is given in the question,
As per the given scatter plot, we take the two points (9, 1) and (3,7).
The equation of the line of best fit:
Let the approximate equation would be as:
y - y₁ = (y₂ - y₁)/(x₂ -x₁ )[x -x₁]
x₁ = 9, y₁ = 1
x₂ =3, y₂ = 7
y - y₁ = (y₂ - y₁)/(x₂ -x₁ )[x -x₁]
y - 1 = (7 - 1)/(3 - 9)](x - 9)
y - 1 = (- 6/6)(x - 9)
y - 1 = -1(x - 9)
y = -x + 9+ 1
y = -x + 10 ...(i)
The time spent exercising by a student who spends 4 hours texting
This means that x = 4.
Substitute the value x =4 in the equation (i), and solve for y
y = -4 + 10
y = 6
Hence, the time spent exercising for a student who spends 6 hours texting is 6 hours.
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Solve for the Value of R
Answer:
whats the question
I don't understand how to do this, pls help :(
Answer: A
Step-by-step explanation:
[tex]-2 1\frac{1}{3} w +6=15[/tex]
help me pls
The solution for the variable w according to the given equation; -21 ⅓ w + 6 = 15 as required in the task content is; w = -27/64.
What is the value of variable w?It follows from the task content that the value of variable w is time determined according to the given equation as in the task content.
Given the equation; -21 ⅓ w + 6 = 15.
First, the mixed number must be converted to a fraction so that we have;
-21 ⅓ = -64/3.
Hence, the equation becomes;
-64w/3 + 6 = 15
Multiply both sides of the equation by 3 so that we have;
-64w + 18 = 45
-64w = 45 - 18
-64w = 27
w = -27/64.
Ultimately, the solution for variable w according to the equation as given in the task content is; w = -27/64.
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solve the system of equations by the addition method
x-y= -2
x+y=4
select the correct choice below and, if necessary, fill in the answer box to complete your choice.
A. The solution set is }. (Type an ordered pair.)
B. There are infinitely many solutions. The solution set is {(x,y)}.
(Type an equation.)
C. There is no solution. The solution set is Ø.
Answer:
(x, y) = (1, 3)
Step-by-step explanation:
You want to solve the system of equations x-y= -2; x+y=4 by the addition method.
Addition methodThe addition method seeks to eliminate one of the variables by adding the equations with appropriate multipliers so that one of the coefficients becomes zero.
Here, we observe that the coefficient of y in one equation is the opposite of that in the other equation. This means adding the two equations will cancel the y-terms:
(x -y) +(x +y) = (-2) +(4)
2x = 2 . . . . . . . . . . . . . . . . simplify; y-term is eliminated
x = 1 . . . . . . divide by 2
1 +y = 4 . . . . . . . substitute for x in the second equation
y = 3 . . . . . . . . . subtract 1
The solution is (x, y) = (1, 3).
Pls help me, giving brainliest 50 POINTS!
Pls show your work and not only your answers pls
If you can’t answer it then don’t answer but if you can thank you
You will be reported if you put links
[tex]{ \qquad\qquad\huge\underline{{\sf Answer}}} [/tex]
Here we go ~
[tex] \textsf{1. Numbers are : 36, 3, 12 } [/tex]
[tex] \textsf{36 = 2 × 2 × 2 × 2 × 2 × 1} [/tex][tex] \textsf{3 = 3 × 1 } [/tex][tex] \textsf{12 = 2 × 2 × 3 } [/tex][tex] \textsf{HCF = product of total common factors of} [/tex][tex] \textsf{all three numbers, i.e : 2 } [/tex]
[tex] \textsf{LCM = product of highest power of each factor } [/tex][tex] \textsf{present in any three of them,} [/tex][tex] \textsf{i.e : 2⁵ × 3 = 32 × 3 = 96} [/tex]
Similarly,
[tex] \textsf{2. Numbers are : 6, 54, 12} [/tex]
[tex] \textsf{6 = 2 × 3 } [/tex][tex] \textsf{54 = 2 × 3 × 3 × 3 } [/tex][tex] \textsf{12 = 2 × 2 × 3 } [/tex][tex] \textsf{GCD = 2 × 3 = 6 } [/tex]
[tex] \textsf{[ 2 and 3 are the only ones common} [/tex] [tex] \textsf{among all three ]} [/tex]
[tex] \textsf{LCM = 2² × 3³ = 4 × 27 = 108} [/tex]
[tex] \textsf{3. Numbers are : 16, 8, 12 } [/tex]
[tex] \textsf{16 = 2 × 2 × 2 × 2} [/tex][tex] \textsf{8 = 2 × 2 × 2 } [/tex][tex] \textsf{12 = 2 × 2 × 3 } [/tex][tex] \textsf{GCD = 2 × 2 = 4 } [/tex]
[tex] \textsf{LCM = 2⁴ × 3 = 16 × 3 = 48} [/tex]
Answer:
Numbers are : 36, 3, 12
36 = 2 × 2 × 2 × 2 × 2 × 1
3 = 3 × 1
12 = 2 × 2 × 3
HCF = product of total common factors of all three numbers, i.e : 2
LCM = product of highest power of each factor present in any three of them, i.e : 2⁵ × 3 = 32 × 3 = 96
Similarly,
2. Numbers are : 6, 54, 12
6 = 2 × 3
54 = 2 × 3 × 3 × 3
12 = 2 × 2 × 3
GCD = 2 × 3 = 6
[ 2 and 3 are the only ones common among all three ]
LCM = 2² × 3³ = 4 × 27 = 108
3. Numbers are : 16, 8, 12
16 = 2 × 2 × 2 × 2
8 = 2 × 2 × 2
12 = 2 × 2 × 3
GCD = 2 × 2 = 4
LCM = 2⁴ × 3 = 16 × 3 = 48
PLEASE NEED HELP FOR THIS ONE THANKS
The average rate of change of f(x) on the interval 30 ≤ x ≤ 60 is r = 1/5.
How to get the average rate of change?For a function f(x), we define the average rate of change over an interval:
a ≤x ≤b is given by:
( f(b) - f(a))/(b - a)
In this case we have the function defined by the table and the interval:
30 ≤ x ≤ 60
On the table we can see:
f(60) = 19
f(30) = 13
Then the average rate of change is:
r = (19 - 13)/(60 - 30) = 6/30 = 1/5
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Identify the property that justifies each step asked about in the answer area below.
Answer:
Commutative Property of Addition2. Distributive propertyStep-by-step explanation:Given[tex]Line 1: 4(8+9x)
Solve for x.
5^x +25^x+125^x=-5
Answer:
No solutionStep-by-step explanation:
Given5ˣ + 25ˣ + 125ˣ = - 5Each exponent on the left side is a positive number and therefore their sum is positive too.
But we have a negative value on the right.
This is not possible, hence no solutions.
I need help! could someone help me with this? is from Imagine Math
Answer:
1st: One solution
2nd: Infinite many solutions
3rd: No solution
4th: No Solution
5th: One Solution
Step-by-step explanation:
1st:
The solution is (6,9)
x = 6 if a vertical line going though (6,0)
y = 9 is a horizontal line going through (0,9)
The two lines with intersect at (6,9)
2nd:
3y = 15x + 6 If you divide all the way through by 3, you get
y = 5x + 2
This is identical to the first equation given. Since it is the same line, the answer is infinite many solutions.
3rd:
3y = x + 2 Divide all the way through by 3
y = 1/3 x + 2/3
9y = 3x + 7 Divide all the way through by 9
y = 1/3 x + 7/9
Since the slopes are the same in both equations (1/3), these line are parallel and will never intersect.
4th:
Since the slopes are both the same (2), the lines are parallel and they will never intersect, so the answer is no solution.
5th:
2y = 3x Divide both sides by 2
y = 3/2
-5y = -10 Divide both sides by -5
y = 2x
These equations are proportional so they go through the origin. They both have a y intercept of zero, so they intersect at (0,0). The answer is one solution.
Find the unit rate
Rahul travelled 348 miles in 6 hours
Answer:
Step-by-step explanation: 348 miles and 6 hours
Select the correct answer.
Given: ZNMY
ZPOB
Prove: ZXMN ZAOP
kk
M
ZXMY and ZAOB are right angles because that information is given. This means that ZXMN is complementary to ZNMY and
ZAOP is complementary to ZPOB by the linear pair theorem. Since ZNMY ZPOB, by the congruent complements theorem.
ZXMN ZAOP.
Where is the error in the proof? Select all that apply.
O The given cannot be used to state that ZAOB is a right angle.
The linear pair theorem cannot be used to state ZXMN is complementary to ZNMY.
The linear pair theorem cannot be used to state ZAOP is complementary to ZPOB.
The congruent complements theorem cannot be used to state that ZXMN
ZAOP.
The given cannot be used to state that ZXMY is a right angle.
The linear pair theorem cannot be used to state ZAOP is complementary to ZPOB.
What is complementary angles?Complementary angles are two angles with a combined angle of 90 degrees, whereas supplementary angles have a combined angle of 180 degrees.
A good that adds value to another good or service is said to be complimentary. To put it another way, they are two items that the client uses in tandem with one another. For instance, cereal and milk or a DVD and a DVD player.
Because the three angles of a triangle sum up to 180° and the right angle has already taken up 90°, the two non-right angles in a right angled triangle are complimentary. We say two angles "Complement" one other when their sums equal 90 degrees. because a complete angle is what is considered to be the right angle.
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Solve for x X/11=2
x=?
Answer:
x = 22
Step-by-step explanation:
Solve for x:
x/11 = 2
multiply both sides by 11:
11(x/11) = 11(2)
x = 22
Answer:
x = 22
Step-by-step explanation:
[tex] \sf \frac{x}{11} = 2[/tex]
Use cross multiplication.
[tex] \frac{x}{11} = \frac{2}{1} \\ \\ \sf x = 2 \times 11 \\ \\ \sf \: x = 22[/tex]
A baseball team has three different pitchers. Randy allowed
2
22 runs and pitched
3
33 innings. Felix allowed
4
44 runs and pitched
5
55 innings. Johan allowed
5
55 runs and pitched
7
77 innings.
Which pitcher has the lowest number of runs allowed per inning?
The pitcher that has the lowest number of runs allowed per inning is Randy.
Which pitcher has the lowest number of runs per inning?In order to determine the pitcher that has the lowest number of runs per innings, divide the number of runs of each player by the number of innings of that player.
Division is the mathematical operation that is used to calculate the quotient of two or more numbers. It entails grouping a number into equal parts using another number.
Number of runs per innings = number of runs / number of innings
Number of runs per innings for Randy : (2 / 3) = 0.667
Number of runs per innings for Felix : (4 / 5) = 0.80
Number of runs per innings for Johan: (5 / 7) = 0.714
Here is the complete question:
A baseball team has three different pitchers. Randy pitched 3 innings and allowed 2 runs, Felix pitched 5 innings and allowed 4 runs, and Johan pitched 7 innings and allowed 5 runs.
Which pitcher has the lowest number of runs allowed per inning?
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