Particularly there is no formula for substitution just insert the given values in the equations.
One of the methods to solve a system of linear equations in two data algebraically is the substitution method. In this method, we find the value of any one of the variables by discordant it on one side and taking every other term on the other side of the equation.
This method is a simple way to resolve a system of linear equations algebraically and find the answer to the variables.
As the name suggests, it involves finding the value of the x-variable in terms of the y-variable from the first equation and then substituting or exchanging the value of the x-variable in the second equation.
The substitution method is one of the algebraic methods to solve coincident linear equations. It concludes by substituting the value of any one of the variables from one equation into the other equation.
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math question file down below
30 + 2(n)
30 + 2(10) = $50
30 + 2(18) = $66
30 + 2(24) = $78
what is 15% of 80? use an equation to solve.
Answer:
1215. percent *80 =
(15.:100)*80 =
(15.*80):100 =
1200:100 = 12
Now we have: 15. percent of 80 = 12
Percentage solution with steps:
Step 1: Our output value is 80.
Step 2: We represent the unknown value with
Step 3: From step 1 above
Step 4: Similarly
Step 5: This results in a pair of simple equations:
Step 6: By dividing equation 1 by equation 2 and noting that both the RHS (right hand side) of both
equations have the same unit (%); we have
Step 7: Again, the reciprocal of both sides gives
Step-by-step explanation:
Hope it is helpful....
Find the unknown angle
Answer:
77 degrees
Step-by-step explanation:
Right triangles always add up to 180 degrees. We know that one angle is 23 degrees, angle A is missing, and the last angle is a right angle which is equal to 90 degrees. Knowing what we know, we must subtract the two known angles from 180 to get angle A.
180 - 90 = 90
90 - 23 = 77
Angle A is equal to 77 degrees.
hope this helps!! :]
What is the distance between (7, 9) and (-4, 9)
Answer:
11 unites
Step-by-step explanation:
what is 21+7+4×8 gemdas rule
Answer:
60
Step-by-step explanation:
21+7+4x8=
21+7+32=
60
Simon wants to find out which shop has the best frozen fruit drink in town. How could Simon conduct a survey with a sample that is representative of the population
Answer:
Step-by-step explanation:
The best way to do this would be to choose a random number of individuals that have bought a frozen fruit drink to survey. Then this same number of individuals should be surveyed in every single shop in the town. This would allow you to gather data from all of the shops and make sure that the sample is completely representative of the population as long as the individuals are chosen completely at random without introducing any external bias to the choice.
Graph the line that has a slope of 1/4
and includes the point (0,1)
Answer:
y = 1/4x + 1
Step-by-step explanation:
Rise/run = 1/4x
y-intercept: (0,1)
Equation: y = 1/4x + 1
Graph this equation or you can just put this equation in Desmos calculator and it'll graph for you.
Clara states that r 2 1 5r 1 3r is an equivalent expression to 9r. Why is Clara’s statement incorrect? Choose all that apply. A The expression r 2 1 5r 1 3r simplifies to r 2 1 8, which is not equivalent to 9r. B When you substitute 1 for r in both expressions, r 2 1 5r 1 3r has a value of 10 and 9r has a value of 9. These values are not equal. C The expression r 2 1 5r 1 3r simplifies to 10r, which is not equivalent to 9r. D When you substitute 2 for r in both expressions, r 2 1 5r 1 3r has a value of 20 and 9r has a value of 18. These values are not equal. E When you substitute 4 for r in both expressions, r 2 1 5r 1 3r has a value of 48 and 9r has a value of 36. These values are not equal. F The expression r 2 1 5r 1 3r simplifies to r(r 1 8), which is not equivalent to 9r.
Answer: A and D
Step-by-step explanation: I got it right
46x = 138??
14x = 42?
8x = 32?
8x = 6?
18x = 234?
Answer:
ok here we go
Step-by-step explanation:
i dont know this one but an easy was to get all of your answers is to search up something like exponent calculator and i use sights like mathpapa and caculator soup soo good luck
Liliana watched 1/2 of Finding Nemo before she paused it to go make popcorn. When she came back, she watched another 1/3 of the movie. What fraction of the movie did Liliana watch in all?
Answer:
5/6 of the movie. 1/2 is the same as 3/6 and 1/3 the same as 2/6. Just add it and boom you got 5/6.
!!!!!PLEASE HELP MEEEEE!!!!!
Answer:
c hehhe
Step-by-step explanation:
Find the interest using the formula I = Prt Principal: $1800 Interest Rate: 6.5% Time: 30 months Interest =
Me pueden ayudar porfis no entiendo
¿Cuantos triangulos tiene un eneagono?
Answer:
un eneagono tiene 9 triángulos
What is 10000000000000000000000000000 + 20000000000000000000000000000
Answer:
3x10^28 OR 30000000000000000000000000000
For the equation 4(x - 2) = 4x + K which value of k will create an equation with no solutions?
Step-by-step explanation:
k=8 that is the equation with no solutions
4sinA+3cosA=5
help me....
Answer:
4sinA+3cosA=5 look at this answer.sorry if wrong.i am not sure.
Answer:
masamstha 31 deleted account is correct hope it's help you have a great day ☺☺
I think of a number, double it and subtract 1 and then square the answer. The result is 64. What could the number be? Give two possible answers please.
1.0000÷16
solution pls pls help me
Answer:
0.0625
Step-by-step explanation:
Write a linear equation that gives the rule for this table.
Hint: Linear Functions are of the form y=mx+b
Answer:
y=x
Step-by-step explanation:
If we look at this then this is a y=mx+b graph
first lets find the rise/run
so rise = how much it goes up and run = how much it goes right or left
the rise/run of this graph is 1 because each time it goes one up it goes one right.
B= y intercept and the y intercept is 0
So it is y=1x+0 or y=x
answer = y=x
Divide 15 by v. Then, subtract 7.
Which of the following expressions matches the statement above?
OA 15 = V-7
OB. 15 = (1-7)
OC. 15 = (v-7)
OD. V=15-7
A is the correct answer
hope that helps:)
Answer:
A 15/V-7
Step-by-step explanation:
Select the correct answer.
Solve the system of equations.
y = x + 3
[tex]y=x^{2} +7x+8[/tex]
A.
(-1,-4) and (-5,-8)
B.
(-1,2) and (-5,-2)
C.
(1,4) and (5,8)
D.
(-1,-2) and (-5,2)
Answer:
B. (-1,2) and (-5,-2)
Step-by-step explanation:
Substitute x + 3 in for y in the second equation. you get
[tex]x + 3 = x^{2} + 7x + 8\\x^{2} + 6x + 5 = 0[/tex]
(x + 1)(x + 5) = 0
x + 1 = 0 or x + 5 = 0
x = - 1 or x = -5
Using the first equation, let x = -1 and x = -5 in order to get the corresponding values for y
y = -1 + 3 = 2 and y = -5 + 3 = -2
So, B is the correct answer.
Find C:
x2 + 10x + c
Answer:
25
Step-by-step explanation:
Answer:
The answer is 25
Step-by-step explanation:
Use the formula (b/2)^2 in order to create a new term in order to find the perfect square trinomial.
Hoped this helped!
The clock shows the current time. When will it be 7:00?
12
11
1
10
2
9
3-
It will be 7:00 in
minutes.
8
4
5
Answer:
It will be seven in 10 mins
Step-by-step explanation:
hope this helps
please help this is for a grade
Answer:
8.91
Step-by-step explanation: I hope this helps, I used my calculator to solve this for you, it is too complicated to explain.
Answer:
Step-by-step explanation:
((4x2.76)-1)÷2=5.02
Hey It's Chloe again, sorry.
But what is the perimeter of a rectangle?
Answer:A perimeter is the sides of a shape added together.
Step-by-step explanation:
Answer:
The perimeter of a rectangle is the total length of all the sides of the rectangle.
Step-by-step explanation:
The perimeter of a rectangle is the total length of all the sides of the rectangle. We can find the perimeter by adding all four sides of a rectangle. Since opposite sides of a rectangle are always equal, we need to find the dimensions of only two sides to find the perimeter of a rectangle.
If you have a 2 inches by 4 inches rectangle, you would have 2 inches + 4 inches + 2 inches + 4 inches = 12 inches
Three calculators cost as much as seven mugs. Each calculator costs $12 more than each mug. What is the cost of one mug?
Answer:
3.60
Step-by-step explanation:
3c=7m
c=m+12 solve for m
To obtain the value of one unknown quantity linear equation in one variable can be formed. The cost of one mug is given as $21.
What is a Linear equation?A linear equation is a equation that has degree as one.
To find the solution of n unknown quantities n number of equations with n number of variables are required.
Given that,
The cost of 3 calculators = The cost of 7 mugs.
The cost of each calculator is $12 more than each mug.
Suppose, cost of each mug be x.
And, cost of each calculator is x + 12.
As per the question the following equation can be made,
7 ×(x + 12) = 3x
=> 7x - 3x = 84
=> 4x = 84
=> x = 21.
Hence, the cost for one mug is $21.
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asdfruhyhkijgfdsafuhyfjtfrdef
Answer:
Epic
Step-by-step explanation:
stop random spam(thanks for points xD)
please help me find the value of x
Answer:
x=105 hope it helps ur day will nice
find 6 ,7,8,9
WILL GIVE BRAINLIST!!!!
Answer:
es un ángulo de 80
[tex] {x}^{3} - 3 {x}^{2} + x - 3[/tex]
how do I solve for x?
Answer:(x−3)(x^2+1)
Step-by-step explanation: