Solve the system using elimination.
3x + 5y = 15
x+y=7
Type your answer as a coordinate pair in the textbox
below.
Answers
Step-by-step explanation:
3x + 5y = 15
x + y = 7
This can be written as ,
3x + 3y = 21
Subtracting i and iii ,
5y - 3y = 15 -21
2y = -6
y =-6/2
y = -3
So that ,
x = 21 - 3*-3 /3
x = 21 +9/3
x = 30/3
x = 10
Answer:
3x+5y=15x+y=7
Step-by-step explanation:
3x+15x+5y+y=7
18x+6y=7
Related Questions
What is the value of t?
Answers
Answer:
53°
Step-by-step explanation:
83 + 44 + x = 180
=> 127 + x = 180
=> x = 180 - 127
=> x = 53°
Hoped this helped.
The volume of a rectangular prism is equal to
the area of the rectangular faces multiplied by
the prism's height. The volume of a
rectangular prism can be expressed as the
following quadratic x3 + 125 . Factor the
quadratic to determine the area of the
rectangular faces and the prism's height. Note:
Use ^to represent exponents, for example,
.
x^2.
Answers
Answer:
ang answer mo po ay 345prism po
The area of the rectangular is represented by quadratic function is (x²-5x+25).
What is a Cubic equation?Cubic equations are polynomials of degree3.
That means, the maximum degree of polynomial is three.
And the standard form of cubic equation is;
f(x) = ax³ + bx² +cx +d, where a, b, c and d are constant coefficients and a ≠ 0.
Given:
The volume of a rectangular prism is equal to the area of the rectangular faces multiplied by the prism's height.
The volume = height x (the area of the rectangular) ..... equation 1
The volume of a rectangular prism can be expressed as the following cubic function x³ + 125.
We can simplify the function,
x³ + 125,
= x³ + 5³
Here, we can use the formula,
x³+y³ = (x+y) (x²-xy+y²)
So,
x³ + 5³,
= (x+5) (x²-5x+25)
Comparing with the equation 1,
we get,
The height = (x+5) and the area of the rectangular = (x²-5x+25).
Therefore, (x²-5x+25) is the area of the rectangular.
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Tyreese is using algebra tiles to solve the equation below.
2 x + 5 = negative x + (negative 1)
Tyreese’s first step is to
remove one x-tile from both sides.
remove two x-tiles from the left side.
add one positive x-tile to both sides.
add two positive x-tiles to both sides.
Answers
[tex]2x + 5 = - x + ( - 1)[/tex]
[tex]2x + 5 = - x - 1[/tex]
Add both sides x
[tex]2x + 5 + x = - x - 1 + x[/tex]
[tex]3x + 5 = - 1[/tex]
Subtract both sides 5
[tex]3x + 5 - 5 = - 1 - 5[/tex]
[tex]3x = - 6[/tex]
Divide both sides by 3
[tex] \frac{3x}{3} = \frac{ - 6}{3} \\ [/tex]
[tex]x = - 2[/tex]
______________________________
As u can see the first step is to :
Add one positive x-tile to both sides
Answer:
Add one positive x-tile to both sides
Step-by-step explanation:
edge
I need some help solving this equation T^T
5x(-y)+2=-3
Answers
Answer:
first subtract the 2 cancelling out on the left side, making the -3 a -5, then add y cancelling out the left side, making the right side -5+y, than your equation is 5x=-5+y, dividing the 5 off makes x=-5+y/5. :)
Suppose you obtain a $4,000 T-note with a 4% annual rate, paid half-yearly, with maturity in 5 years. How much (simple) interest will you earn?
Answers
4000 x .04/2 x 5x2 = 800
what is the interval between each tick mark on the top number line
Answers
Answer:
a. 1
b. 0.1
Step-by-step explanation:
Jeremiah and Tristan work at a dry cleaners ironing shirts. Jeremiah can iron 35 shirts per hour, and Tristan can iron 20 shirts per hour. Jeremiah and Tristan worked a combined 17 hours and ironed 490 shirts. Determine the number of hours Jeremiah worked and the number of hours Tristan worked.
Answers
The number of Hours Tristan ironed = 7 hrs
A football team charges $30 per ticket and averages 20,000 people per game. Each person spend an average of $8 on concessions.For everydrop of $1 in price,the attendance rises by 800 people.What ticket price should the team charge to maximize total revenue? Calculate the TR max.
Answers
The price that would maximize total revenue would be $ 23.
As long as that a football team charges $ 30 per ticket and averages 20,000 people per game, and each person spend an average of $ 8 on concessions, and for every drop of $ 1 in price, the attendance rises by 800 people, to determine what ticket price should the team charge to maximize total revenue, the following calculation must be performed:
20,000 x 30 + 20,000 x 8 = 760,000 24,000 x 25 + 24,000 x 8 = 792,00024,800 x 24 + 24,600 x 8 = 792,00025,600 x 23 + 25,600 x 8 = 793,600 26,400 x 22 + 26,400 x 8 = 792,000
Therefore, the ticket price that would maximize the total revenue would be $ 23.
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what is this? 30 points!!!!
Answers
Answer: X = -351
Step-by-step explanation:
Answer:
x=117
Step-by-step explanation:
Which relationships describe angles 1 and 2? Select each correct answer.
Adjacent angles
Vertical angles
Complementary angles
Supplementary angles
Answers
Answer:
They are adjacent angles and supplementary angles.
Step-by-step explanation:
∠1 and ∠2 are supplementary angles because they form a linear pair who sum = 180°
∠1 and ∠2 are adjacent angle because they are next to each other or you can say that they share a common side and have the same vertex.
Find the equation of this line plz help
Answers
Answer:
y = - [tex]\frac{1}{2}[/tex] x + 1
Step-by-step explanation:
The equation of a line in slope- intercept form is
y = mx + c ( m is the slope and c the y- intercept )
Calculate m using the slope formula
m = [tex]\frac{y_{2}-y_{1} }{x_{2}-x_{1} }[/tex]
with (x₁, y₁ ) = (0, 1) and (x₂, y₂ ) = (4, - 1) ← 2 points on the line
m = [tex]\frac{-1-1}{4-0}[/tex] = [tex]\frac{-2}{4}[/tex] = - [tex]\frac{1}{2}[/tex]
The line crosses the y- axis at (0, 1 ) ⇒ c = 1
y = - [tex]\frac{1}{2}[/tex] x + 1 ← equation of line
Why is a two-way table helpful for looking at data?
Answers
Answer:
Because they are often used to analyze survey results.
Step-by-step explanation:
Answer:
It shows what percent of data points fit in each category
The function f(x) = −(x + 5)(x + 1) is shown. On a coordinate plane, a parabola opens down. It goes through (negative 5, 0), has a vertex at (negative 3, 4), and goes through (negative 1, 0). What is the range of the function? all real numbers less than or equal to 4 all real numbers less than or equal to −3 all real numbers greater than or equal to 4 all real numbers greater than or equal to −3 Mark this and return
Answers
Answer:
All real numbers less than or equal to 4.
f(x) ≤ 4
Interval notation: (-∞, 4]
Step-by-step explanation:
Given the quadratic function, f(x) = -(x + 5)(x + 1), where the vertex occurs at point, (-3, 4):
Since the graph of the parabola opens down, then it means that the vertex is its maximum point. In reference to the vertical points on the graph (i.e., the range values), then the vertex sets the maximum range value of k = 4. This implies that the maximum possible range value is from negative infinity to positive 4.
Therefore, the range of the function is: all real numbers less than to or equal to 4.
f(x) ≤ 4
Interval notation: (- ∞, 4]
Answer:
its A on edge
Step-by-step explanation:
Just took the test
Ax + 4 = 6x + B
What values of A and B will result in an equation with infinite solutions? Enter the answers in the boxes.
A=
B=
Answers
Answer:
A = 6 + B /x − 4 /x
B = Ax + 4 − 6 x
x = b-4/a-6
Step-by-step explanation:
hope this helps :)
The values of A and B that will result in an equation with infinite solutions are 6 and 4
Infinite solution of an equationFor an equation to have infinite number of solutions, the equations on both sides must be the same,
Given the equation
Ax + 4 = 6x + B
If the equation has infinite number of solution, then
Ax = 6x
A= 6
Similarly
4 = B
B = 4
Hence the values of A and B that will result in an equation with infinite solutions are 6 and 4
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20. The number of babies out of 1,000 that die during their first year of life is called:
A. infant morbidity rate
B. infant mortality rate
C. fertility rate
D. death rate
Answers
The answer is B
the explanation is not needed
Answer:
B
Step-by-step explanation:
the amswer will be infant mortality rate
can someone help me plzzz!!
Answers
Answer:
x = 2 and y = -2
Step-by-step explanation:
a) 5x-4y = 18
b) x+3y = -4
b) x = -3y - 4
a) 5 (-3y - 4) - 4y = 18 (substitution)
a) - 15y - 20 - 4y = 18
a) -19y = 18 + 20
a) y = 38/-19
y = -2
b) x + 3(-2) = -4
b) x - 6 = -4
x = 6-4 = 2
Simplify the expression.
4+ 5(3x - 2) – 3x
Help plsss and no links plsss
Remember no links
Answers
Step-by-step explanation:
→ 4 + 5(3x - 2) - 3x
→ 4 + 15x - 10 - 3x
→ 12x - 6
therefore, option A is correct.
hope this answer helps you dear!
The required simplified solution of the given expression is 12x -6. Option A is correct.
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,
= 4 + 5(3x -2) - 3x
Following the distributive property,
= 4 + 15x - 10 - 3x
Following the associative property,
= 4 - 10 + 15x - 3x
= -6 + 12x
= 12x - 6
Thus, the required simplified solution of the given expression is 12x -6. Option A is correct.
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Answer the question
Answers
Answer:
70 °
Step-by-step explanation:
A triangle has 180 degrees. Because this triangle is isosceles, the left two angles are the equal.
180 - 40 = 140
140 / 2 = 70
n^2- n - 12 = (n + 3)(___)
Answers
Answer:
n^2 - n - 12 = (n+3)(n-4)
Step-by-step explanation:
3 times - 4 = -12 ( two numbers when multiplied = -12, when added=-1)
3 + -4 = -1
Question 5 of 10
The graph shows the function f(x) = 2^x.
What is the value of x when f(x) = 4?
Answers
Answer:
A. 2
Step-by-step explanation:
Our y-axis is equivalent to f(x), so we can use it to find the value of x when f(x) = 4. If we look at the graph, we can find that an f(x) value of 4 (or, a y-value of 4) has an x-value of 2.
We could also figure this out by making f(x) equal to 4 in the equation:
[tex]4=2^{x}[/tex]
2 times itself how many times is equal to 4? Well, 2 times 2 is equal to 4, so 2 times itself two times is equal to 4. x is equal to 2:
[tex]4=2^{2}[/tex]
Either way works. If you have any more questions, let me know! :)
What is the y-intercept of
y = 4x – 12?
A) 4
B)-4
C)-12
D) -3
Answers
Answer:
C, -12
Step-by-step explanation:
If y = mx + b
then m = 4
and b = -12
b is the y-intercept
this can be plotted on a graph as {0, -12}
Hope this helps
Please help shakdnjdissnbxjddbbd
Answers
Answer:
Step-by-step explanation:
# Store uploaded files on the local file system in a temporary directory.
config.active_storage.service = :test
The website
MATH QUESTION HELP ASAP!
Answers
Answer:
-9/10
Step-by-step explanation:
Yw, me!
3) I get a 15% employee discount, but then have to pay 8.2% tax on the discounted price. What do I pay for a $300
item?
Answers
Answer:
$243.45
Step-by-step explanation:
300 * 0.15 = 45
300 - 45 = $225
$225 is the discounted price
225 * 0.082 = 18.45
225 + 18.45 = $243.45
You would pay $243.45 for the item.
I need the answer please asp
Answers
Answer:
The answer is a isosceles right I think.
The population in Mittsville since 2000 is modeled by the function, P(x) = 20000 x 0.93x where x refers to the number of years since 2000. Complete the following sentence.
The population has been ( ) every year.
A= increasing
B= Decreasing
Answers
Constructed Response
Two skyscrapers are under construction in Atlanta. They will sit on opposite sides of Peachtree St. and
the architect has designed them to be similar. The architect made a sketch of two rectangles to model
the front view of the two buildings and included the following statement: ABCD ~ JKLM. It was also given
that AB = 1600 ft., BC = 200 ft., and JM = 150 ft.. Use the scenario to solve problems (a) through (d)
a.) Which rectangle is being used to model the taller building?
b.) Which line segments could be used to model the height of the smaller building?
c.) What is the height of the taller building? Explain your reasoning.
d.) What is the height of the smaller building? Explain your reasoning.
e.) Would it make sense to say that the scale factor from smaller building to taller building is 3/4?
Explain your reasoning.
Answers
A rectangle is a quadrilateral which has the length of its opposite sides to be equal. Thus, the following are the solutions to the questions:
a) The rectangle used to model the taller building is ABCD.
b) The line segment used to model the height of the smaller building is JM = KL.
c) The height of the taller building is 200 feet.
d) The height of the smaller building is 150 feet.
e) Yes, the scale factor from small to tall building is [tex]\frac{3}{4}[/tex].
Rectangles have equal length of opposite sides , and the sum of its interior angles to be [tex]360^{o}[/tex]. Since the two given skyscrapers were modeled with respect to rectangles ABCD and JKLM, then the answers to the questions are:
a) The rectangle used to model the taller building is ABCD. Since the length of a rectangle is always greater than its width. So that the height; AD = BC.
b) The line segment that can be used to model the height of the smaller building is; JM = KL. This represent the width of the rectangular model for the small building.
c) The height of the taller building is AD = BC = 200 feet. The width of a rectangle is often smaller than its length, which in this case is the height.
d) The height of the smaller building is JM = KL = 150 feet. The length of a rectangle is usually longer than its width.
e) Yes, it would make sense because:
scale factor = [tex]\frac{height of the smaller building}{height of the taller building}[/tex]
= [tex]\frac{150 ft}{200ft}[/tex]
= [tex]\frac{15}{20}[/tex]
scale factor = [tex]\frac{3}{4}[/tex]
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PLEASE HELP ME PLEASE IM DESPERATE ILL MARK BRAINLIEST
Answers
Answer:36in
Step-by-step explanation:
Answer: 36in
Step-by-step explanation: Its 36in because if you add them all up then you get 36. (hope it helps +)
A system of two equations is shown below:
Equation C: a = 2b + 7
Equation D: a = 5b − 3
What value of a can be substituted into equation D to solve the system of equations?
(look at picture for details)
Answers
Answer:
2b+7
Step-by-step explanation:
I will mark you brainliest if you help with all of these
Answers
Answer:
1. 3/2
2. 1
3. -5/3
4. 5/4
5. -5/9
6. 4/5
7. 8/5
8. 1/4
9. 1/2
10. 2/3
11. 0
12. -1/3
13. 1
14. -1
Step-by-step explanation:
2. Is 2 and yah!
