Answer:
Equation 1: 8x + 10y = 123.4
Equation 2: 5x + 9y = 97.2
cost of a burrito = $7.30
cost of a sandwich = $6.30
Step-by-step explanation:
Let x = cost of a sandwich
Let y = cost of a burrito
Equation 1: 8x + 10y = 123.4
Equation 2: 5x + 9y = 97.2
Rewrite equation 1 to make y the subject, then substitute into equation 2 and solve for x:
8x + 10y = 123.4
⇒ 10y = 123.4 - 8x
⇒ y = 12.34 - 0.8x
5x + 9(12.34 - 0.8x) = 97.2
⇒ 5x + 111.06 - 7.2x = 97.2
⇒ 13.86 = 2.2x
⇒ x = 6.3
So cost of a sandwich = $6.30
Substituting x = 6.3 into equation 2 and solving for y:
5(6.3) + 9y = 97.2
⇒ 31.5 + 9y = 97.2
⇒ 9y = 65.7
⇒ y = 7.3
So cost of a burrito = $7.30
Answer:
8x + 10y = 123.40
5x + 9y = 97.20
OR
40x + 50y = 617
-40x - 72y = -777.6
x = $6.30
y = $7.30
Step-by-step explanation:
we can write this system of equations:
8x + 10y = 123.40
5x + 9y = 97.20
using the 'elimination method', we can multiply the first equation by 5 and the second equation by -8 to get:
5(8x + 10y) = 123.4(5)
40x + 50y = 617
-8(5x + 9y) = 97.2(-8)
-40x - 72y = -777.6
now we can add the new equations and solve for 'y':
40x + 50y = 617
-40x - 72y = -777.6
-22y = -160.6
y = 7.30
now we can substitute 7.3 for 'y' so we can solve for 'x':
8x + 10(7.3) = 123.4
8x + 73 = 123.4
8x = 50.4
x = 6.30
i need help finding the answer
Answer:
length of RT = 4
Step-by-step explanation:
triangle RST has been enlarged by 3 as the length of ST is 3x longer than BC
so the length of RT (12) can be divisible by 3 that gives AC the length of 4cm
Select four different ways of representing functions. How can you tell if a relationship is a function?
Complete the explanation.
Answer:
a function can be represented verbally, algebraically, numerically, and graphically which here would be: A, B, E and D
Please help due at 10:00!!!!!!!!!!!
3y = 5
6 = 2x + 2
x = 2, y = 5/3
2x - 2 = 2 ←
Answer:
y = - 4
Step-by-step explanation:
3y = 2x - 6 ................. (1)
4x + 3y = - 24 ........... (2)
(1) ----> (2)
4x + ( 2x - 6 ) = - 24
6x - 6 = - 24
x - 1 = - 4
x = - 3
3y = 2 ( - 3 ) - 6
3y = - 12
y = - 4
( - 3 , - 4 )
help
this is easy
for u
Answer:
2587
+
9534
—————
12 121
This is the answer :)
use multiplcation to solve the proportion. a/40 = 3/10
Answer:
a=12
Step-by-step explanation:
a/40=3/10
10 x 4=40, so
3 x 4=12
a=12
Answer:
[tex]\boxed{\sf{x=12}}[/tex]
Step-by-step explanation:
Isolate the term of a from one side of the equation.
Solution: Multiplication property of equation.
a/40=3/10
First, multiply by 10 from both sides.
[tex]\sf{\dfrac{a}{40}\cdot \:10=\dfrac{3}{10}\cdot \:10}[/tex]
Solve.
a/4=3
Then, multiply by 4 from both sides.
4a/4=3*4
Solve.
3*4=12
a=12
As a result, the correct answer is a=12.
I hope this helps you! Let me know if my answer is wrong or not.
Which of the following ordered pairs make this equation true?
y = 3x
A. (-3,-1)
B. (3, 1)
C. (6,4)
D. (2,6)
Answer:
D
Step-by-step explanation:
substitute the x- coordinate of each point into the equation and if the value obtained is equal to the y- coordinate then the point makes the equation true.
A (- 3, - 1 )
y = 3(- 3) = - 9 ≠ - 1 ← false
B (3, 1 )
y = 3(3) = 9 ≠ 1 ← false
C (6, 4 )
y = 3(6) = 18 ≠ 4 ← false
D (2, 6 )
y = 3(2) = 6 ← true
which epuation represents the relationship in the table
Answer:
the answer is ................. nothing
Answer:
Step-by-step explanation:
Steve managed a charity basketball game. Each ticket to the basketball game cost $15. The expenses for the game were $275. Which expression can be used to find the total amount of money Steve made for his charity if he sold b tickets and paid th
Answer:
18.33
Step-by-step explanation:
15x=275
x=275÷15
x=18.33
Samuel wants to eat at least 15grams of protein each day. Let x represent the amount of protein he should meat each day to meet his goal. Which inequality represents this situation?
Answer:
[tex]x\geq 15[/tex]
Step-by-step explanation:
Samuel wants at least 15 grams
Let's expand on "at least 15"
It means that Samuel wants no less than 15, but 15 or more
It could be 16, but not 14
To create an inequality, 15 or more can be written as [tex]x\geq 15[/tex] (x is 15 more more)
The answer is [tex]x\geq 15[/tex]
Hope this helps :)
Have a nice day!
can you help me with this please 6t+4t+–3t
Answer:
7t
Step-by-step explanation:
Just combine the coefficients
6t + 4t - 3t = (6+4-3)t = 7t
Answer:
t(6+4-3)
=t(7)
=7 t
..........
Unknown Angle Problems (with algebra)
Answer:
[tex]x = 45[/tex]
Step-by-step explanation:
You'll solve it like this:
[tex]2x+45+x=180[/tex]
Grap it on desmos to check the x value
[tex]x=45[/tex]
Check your answer by substituting:
[tex]2(45)+45+45[/tex]
Which is then equal to [tex]180[/tex]
Solve the following equations for all values of x. Express your answers in simples a+bi form.
Answer:
Solution
or,X(X-1)=9(X-3)
or,X2-X=9X-18
or,9X+X=18-X2
or,10X=18-X2
I think it will help you.
What is the quotient? StartFraction 2 y squared minus 6 y minus 20 Over 4 y 12 EndFraction divided by StartFraction y squared 5 y 6 Over 3 y squared 18 y 27 EndFraction.
Answer:
b on edge or 3(y-5)/2
Step-by-step explanation:
took the test right now
Please help me with this
Answer:
the answer is 7
Step-by-step explanation:
7 other spirt hate
Please tell me if I’m right or wrong
Answer:
to be honest i think it would be c
Step-by-step explanation:
Plsss help me I have 10 minutes to answer the question
Answer:
-36
Step-by-step explanation:
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What are the solutions to the following equation?
(x+5)2=36
Question 3 options:
-1 and 11
31 and 41
-41 and -31
-11 and 1
Answer:
We have a problem here, Houston.
Step-by-step explanation:
Is "(x+5)2=36" supposed to be (x+5)^2=36 ?
If so,
x = ± 11
-----------------------
If it is indeed (x+5)2=36
then:
2x + 10 = 36
2x = 26
x = 13
None of the answer options fir either of these two interpretations of the equation provided. Please check the equation.
Answer:
-11 and 1
Step-by-step explanation:
did the test
The figure shown is a rhombus. If
Hoi there :)
The question is unclear. Plesse repost with full question and picture
What is the area of a regular hexagon inscribed in a circle of radius 9 meters?
35.074 square meters
175.370 square meters
192.589 square meters
210.444 square meter
Answer: That hexagon can be partitioned into six equilateral triangles, each with side of 9 meters. The area of an equilateral triangle is which in this case is which is roughly 35.074 square meters. The area of the hexagon is six times that, which comes to about 210.44417312 square meters.
Step-by-step explanation:
541 - 167 8/9 - 3/9 5/8 - 2/8
Answer:
Q1: 374
Q2: 5/9
Q3: 3/8
Step-by-step explanation:
Q1:
541−167
=541−167
=541+−167
=374
Q2:
8/9 - 3/9
8 - 3 /9
= 5/9
Q3:
5/8 - 2/8
5 - 2 / 8
= 3/8
lol was i correct im not sure
your answer is correct, dw.
Answer:
you are correct :)
Step-by-step explanation:
-x^2 - 6x + 16 --> reverse the operations...
x^2 + 6x - 16 --> factor
(x + 8)(x - 2) --> hope this helps
:D
The figure shows a rhombus ABCD where the diagonals AC and BD intersect at E. Find the value of x.
Answer: 2
Step-by-step explanation:
Using the Z rule, we get the angle of DCE is 2x + 53
The angle DEC is a right angle as the diagonals of a rhombus always make a right angle
So we get the equation
3x + 7 + 2x + 53 + 90 = 180
5x = 10
x = 2
7.
Find the measurements (CVU
u
630
(3x) (x + 13)
су
T
Answer:
12.43
Step-by-step explanation:
what is the gradient of the blue line , pls i need this done ASAP and someone who's good at maths
Answer:
-3
Step-by-step explanation:
gradient => (-1-2)/(-1+2)
gradient => -3/1
gradient => -3
True or False?
a. If x is a nontrivial solution of Ax = 0, then every entry in x is nonzero.
b. The equation x= x2u + x3v, with x2 and x3 free (and neither u nor v a multiple of the other), describes a plane through the origin.
c. The equation Ax = b is homogeneous if the zero vector is a solution.
d. The effect of adding p to a vector is to move the vector in a direction parallel to p.
In a situation where x is a nontrivial solution, then every entry in x should not be nonzero. Therefore, it's false.
What is a nontrivial solution?A nontrivial solution simply means a system of equation where the determinant of the coefficient is zero. When x is a nontrivial solution of Ax = 0, then at least one entry should be nonzero.
The equation x= x2u + x3v, with x2 and x3 free (and neither u nor v a multiple of the other), describes a plane through the origin. This is true. Since they're free variables, the space span has dimensions and this spans through the origin.
The equation Ax = b is homogeneous if the zero vector is a solution. Since x = 0 is a solution. Therefore, Ax = b. Hence, b = 0.
The effect of adding p to a vector is to move the vector in a direction parallel to p. It should be noted that adding p to a vector moves it in a direction that's parallel.
Learn more about nontrivial solution on:
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a wall is 15 cm long,0.2m wide and 2m high. how many bricks of size 15cm×8cm×5cm each are required to construct the wall?
Answer:
100 bricks are required to construct the wall.
Step-by-step explanation:
All calculations should be done with unit in centimetres.
volume of the wall = length * width * height
= 15 * 20 * 200
= 60000 cm³
one brick volume = length * width * height
= 15 * 8 * 5
= 600 cm³
So to fill the entire wall with x walls: volume of wall / one brick volume
→ 60000 / 600
→ 100 bricks
Help please its for pre-calc homework due in 10 min
If you put the problem on a graph, the graph will show you (2,4)^2 and it'll be in a U-shape.
This probably won't help but let me know. :)
Triangle ABC is a right triangle. Angle A is the right angle, m∠B=(10x−8)∘, and m∠C=(4x+28)∘. What is m∠C? Enter your answer in the box.
Answer:
C = 48
Step-by-step explanation:
All angles together will equal 180. 1 Angle is a right angle at 90. That leaves 90 for the remaining 2 angels.
set your formula as 10x-8 + 4x+28 = 90 and solve for x
x = 5
now substitute 5 in place of x
c= 4*5 + 28
If Bob won $1000000 and Sally won $1000000 $673,000 how much money is Sally has more than Bob
Nathan mixes green paint and yellow paint in the ratio 3:5.
He makes 16 litres of paint.
How much more yellow paint does he need to add to the mixture so that
the ratio of green paint to yellow paint becomes 1:6?
26 liters of yellow paint need to be added for the ratio of green paint to yellow paint to be 1:6.
EquationAn equation is an expression that shows the relationship between two or more variables and numbers.
From the question:
Amount of green paint = (3/8) * 16 = 6 liters
For the ratio of green paint to yellow paint to be 1:6, let y represent the number of yellow paint to be added.
6 = (1/7) * (16 + y)
16 + y = 42
y = 26
26 liters of yellow paint need to be added for the ratio of green paint to yellow paint to be 1:6.
Find out more on Equation at: https://brainly.com/question/2972832