Answer:
x = 9/2, y = -5/2
Step-by-step explanation:
5x + y = 20
10x - 2y = 50
There's multiple ways to do this, but I will solve using substitution.
Isolate variable y on the first equation.
5x + y = 20
y = 20 - 5x
Substitute the value of y for 20 - 5x in the second equation.
10x - 2(20 - 5x) = 50
Use distributive property:
10x - 40 + 10x = 50
Combine like terms:
20x - 40 = 50
20x = 90
x = 90/20
x = 9/2
Substitute x for 9/2 and solve for y:
y = 20 - 5(9/2)
y = 20 - 45/2
y = 40/2 - 45/2
y = -5/2
Answer:
x =9/2, y = -5/2
Step-by-step explanation:
5(9/2) + -(5/2)= 20
45/2 + -5/2 = 20
40/2 = 20
10(9/2) - 2(-5/2) = 50
90/2 + 10/2 = 50
45 + 5 = 50
Find the rule. Solve for n. Х Y 4 3 6 5 7 6 10 n Rule:
Answer:
n = 9
Step-by-step explanation:
Here we have the table:
X Y
4 3
6 5
7 6
10 n
First, we want to find the rule.
in the first pair we have:
x = 4
y = 3
We can see that the y-value is one smaller than the x-value
y = 3 = 4 - 1 = x - 1
For the second pair we have:
x = 6, y = 5
We again can see that the y-value is one smaller than the x-value
y = 5 = 6 - 1 = x - 1
For the third pair we have:
x = 7, y = 6
Again, can see that the y-value is one smaller than the x-value.
y = 6 = 7 - 1 = x - 1
We can conclude that the rule is:
y = x - 1
For the last pair, we have:
x = 10, y = n
Then:
n = 10 - 1 = 9
n = 9
Then the table is:
X Y
4 3
6 5
7 6
10 9
- A sequence is shown below
2592, 432, 72, 12,...
Identify the type of sequence and the common ratio or difference.
(answer to get BRAINLYLIST)algorithm to find fehrenhit where clcius is 99
Answer:
210.2
Step-by-step explanation:
Formula
(99°C × 9/5) + 32 = 210.2°F
Halle el valor de "h" del punto centro de la ecuación de la circunferencia cuyo diámetro es el segmento de la recta que une los puntos A(2,3) y B(4,−1):
Answer:
El punto es (3, 1)
Step-by-step explanation:
Sabemos que la ecuación de un circulo centrado en el punto (a, b), con radio R, se escribe como:
(x - a)^2 + (y - b)^2 = R^2
En este caso, sabemos que el diametro de nuestro circulo es igual al segmento que uno los puntos A(2, 3) y B(4, -1) (y el diametro es el doble del radio)
Entonces el centro del punto es exactamente el punto medio en el segmento dado.
Para encontrar el punto medio en el segmento dado, tenemos que encontrar el punto medio entre los valors en x, y el punto medio entre los valores en y.
Donde el punto medio entre dos valores a y b se calcula como:
punto medio = (a + b)/2
El punto medio en x es:
x = (2 + 4)/2 = 3
El punto medio en y es:
y = (-1 + 3)/2 = 2/2 = 1
Entonces el punto medio en el segmento es:
C(x, y) = C(3, 1)
Esto quiere decir que el centro de la circunferencia va a ser el punto (3, 1)
helppppppppppppppppppppppppppppppp
Answer:
that link is a scam do not click on it
Step-by-step explanation:
there are people going around typing this link it guves your phone a virus
Colton sold a total of 28 tee shirts and sweatshirts as a fundraiser for his football team. If tee shirts cost 12 dollars each and sweatshirts cost 20 dollars each and he raised a total of 424 dollars how many tee shirts did he sell?
Answer:
17
Step-by-step explanation:
Create a system of equations where t is the number of t shirts he sold, and s is the number of sweatshirts he sold
t + s = 28
12t + 20s = 424
Solve by elimination by multiplying the top equation by -20, then adding them together
-20t - 20s = -560
12t + 20s = 424
-8t = -136
Solve for t:
t = 17
So, Colton sold 17 t shirts
Adele ate lunch at a restaurant. The bill came to $90. If she left a 15% tip, how much was the
tip?
Answer:
$13.50
Step-by-step explanation:
The total is $103.50.
Find the sum of the first six terms of the geometric sequence.
an = 8(3)n-1
2,952
8,774
2,910
2,912
Answer:
yegegeggg
Step-by-step explanation:
hehehheeuue
Answer:
the answer is 2,912
Step-by-step explanation:
i just took the test
the answer is D.
explain how to get the answer??
Answer:
[tex] - 5 \leqslant x - 2 < 4[/tex]
[tex] - 5 + 2 \leqslant x < 4 + 2[/tex]
[tex]3 \leqslant x < 6[/tex]
Step-by-step explanation:
add +2 for both sides
to make x as a subject
Which shows the expression below simplified? (4.9 x 108) ÷ (7 x 105)
Hoping it helps...
Have a nice day!
The table below shows the distribution of students in a sixth grade drama
club What is the ratio of the number of girls to the number of boys? 18 boys 28 girls
Step-by-step explanation:
9:14
Hope this helps xxx
If a triangle has a right angle and a 30 degree angle, what is the measure of the third angle?
Answer:
60
Step-by-step explanation:
All triangles have a total measurement of 180 degrees. So to find the last angle measure subtract 90 and 30 from 180, 180-(90+30). This equals 60 degrees. Additionally, a triangle with a 90 and 30 degree angle is known as a 30-60-90 special right triangle. All of these triangles will have 60 as their third measurement.
A store is offering a discount of 15% on fishing rods what is the amount a customer will pay for a rod regularly priced at $25.00
Answer:
$21.25
Step-by-step explanation:
$25 x 0.85 = $21.25
Four people have measured the height of a wall using different methods. Their results are shown in the table. Order their measurements from least to greatest
Answer:
5/2, 2.6, 1 + sqrt(3), sqrt(8)
Step-by-step explanation:
Use a calculator:
sqrt(8) = 2.83
5/2 = 2.5
2.6 = 2.6
1 + sqrt(3) = 2.73
Answer:
5/2, 2.6, 1 + sqrt(3), sqrt(8)
What is the greatest common factor of 40, 8, and 24?
In 2007, the population of Tallahassee, Florida was 168,979. Some researchers believe that the population of Tallahassee will increase at a rate of 1% each year. If this is correct, how many years will it take for Tallahassee to reach a population of 180000. Round appropriately and write units.
Answer:
Number of year in which population will be 180,000 = 6 year (Approx.)
Step-by-step explanation:
Given:
Population in 2007 = 168,979
Rate of increase in population = 1% = 0.01
Future population = 180,000
Find:
Number of year in which population will be 180,000
Computation:
A = P[1+r]ⁿ
Future population = Population in 2007[1+Rate of increase in population]ⁿ
180,000 = 168,979[1+0.01]ⁿ
180,000 = 168,979[1.01]ⁿ
1.06522 = [1.01]ⁿ
n = 6 (Approx.)
Number of year in which population will be 180,000 = 6 year (Approx.)
How many degrees are measured in the interior angles
of a triangle?
Answer:
180 degrees
Step-by-step explanation:
Answer:
180 °
Step-by-step explanation:
When I have walked 20% of the way to school, I have 1200 metres more to walk than when I have 20% of the walk remaining.
How far, in metres, is it from my home to my school?
Answer:
The house is 2000 meters from the school.
Step-by-step explanation:
Given that, when I have walked 20% of the way to school, I have 1200 meters more to walk than when I have 20% of the walk remaining, to determine how far, in meters, is it from my home to my school the following calculation has to be done:
100 - 20 = 80
80 = 20 + 1200
80 - 20 = 1200
60 = 1200
1200/60 = 20
20 x 100 = 2000
Therefore, the house is 2000 meters from the school.
Question 2 (1 point)
What is the length of a day-night cycle? Is it the same everywhere on Earth?
12 hours - yes; because the sun rises and sets in the exact same place every day
relative to Earth.
12 hours - no; because depending on where you are on Earth, you have a
different amount of sunlight.
24 hours - yes; because the sun rises and sets in the exact same place every day
relative to Earth
24 hours - no; because depending on where you are on Earth, you have a
different amount of sunlight.
Answer: 24 hours - no; because depending on where you are on Earth, you have a different amount of sunlight.
Step-by-step explanation:
The day-night cycle is a complete day or a complete rotation of the earth around its axis. This takes 24 hours which is why 24 hours is the length of a full day.
People around the world however, do not get the same amount of sunlight or darkness and this is because of where they are on Earth. Due to the way the planet is tilted on its axis, some areas see sunlight more than other in a period and others see more darkness.
Hey, if you can help me with this then please. I really need this done. :)
Answer:
97 oz.
Step-by-step explanation:
1 lb.=16oz
3+2 lbs = 5 lb's which equals to 80 oz.
then add the extra ounces 7+10 = 17
80 + 17 = 97 oz.
Answer:
D.
Step-by-step explanation:
There are 16 ounces in one pound.
3 X 16 = 48 + 7 = 55 ounces for the first book.
2 X 16 = 32 + 10 = 42 ounces for the second book.
55 + 42 = 97 ounces.
Use the distributive property to multiply combine like tems & find the equation
6x(6x+3)-3(6x+3)
Answer:
Solution: 36x2−9
Step-by-step explanation:
So, you always have to start with distrubuting which is basically dividing.
Heres the equation that I started with. You can do it differently of course.
36x2+18x-3(6x+3)
combine like terms.
36x2-9
, your solution will be
36x2-9
OPEN-ENDED Complete the table by describing possible independent or
dependent variables.
Dependent Variable
18.
Independent Variable
The number of hours you study for a test
The speed you are pedaling a bike
19.
20.
Your monthly cell phone bill
The amount of money you earn
21.
Answer:
b
Step-by-step explanation:
n
What is the mean? If the answer is a decimal, round it to the nearest tenth.
-2, 0, -3 ,0, -3, 0, -5,6,0
Type the correct answer in each box The three interior angle measures of this triangle are
x = __ °
y = __ °
z = __ °
Answer:
x=30
y=70
z=80
step by step explanation:
Classify the following polynomial as a monomial, binomial, trinomial, or none of these.
x + y + z
Monomial
Trinomial
Binomial
None of these
Answer:
Trinomial.
Step-by-step explanation:
A monomial has one term. A binomial has two terms. A trinomial has 3 terms.
x + y + z has 3 terms; x, y, z. So it is considered a trinomial.
Pls answer and no bs link or I’ll report
Answer:
No solution
Step-by-step explanation:
One solution is when two lines intercept
Infinite solutions is when two lines are on top of each other
No solution is when two lines are parallel
Help me with this I don’t really understand it
Answer:
Could you please help me with the two most recent questions of mine on my page? I will give u brainliest and 20 points! :))) X
Step-by-step explanation:
Help with math please
Solve by using elimination.
2x+3y=12
-4x-6y=-24
Answer:
Hi! The answer to your question is (x,4-[tex]\frac{2x}{3}[/tex])
Step-by-step explanation:
☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆*: .｡..｡.:*☆☆*: .｡..｡.:*☆☆
☆Brainliest is greatly appreciated!☆
Hope this helps!!
- Brooklynn Deka
☁️ Answer ☁️
2x+3y=12, -4x-6y=-24
I got:
x=x, y=4 - 2x/3
(Im not sure if I solved it correctly)
Hope it helps.
Have a nice day noona/hyung
Find the discriminant.
4w 2 + 8W + 4 = 0
How many real solutions does the equation have?
no real
solutions
one real
solution
two real
solutions
Answer:
one real solution being only -1
Step-by-step explanation:
Solve for w over the real numbers:
4 w^2 + 8 w + 4 = 0
Divide both sides by 4:
w^2 + 2 w + 1 = 0
Write the left hand side as a square:
(w + 1)^2 = 0
Take the square root of both sides:
w + 1 = 0
Subtract 1 from both sides:
Answer: |
| w = -1
Answer:
[tex]Discriminant=0\\b)\ One\ Real\ Solution[/tex]
Step-by-step explanation:
[tex]We\ are\ given\ that:\\4w^2+8w+4=0\\We\ know\ every\ quadratic\ equation\ can\ be\ represented\ in\ the\ form\ of:\\ax^2+bx+c=0,\ where\ x \neq 0\\Hence,\\Lets\ first\ recognize\ the\ co-efficients\ of\ the\ algebraic\ terms( x^2,\ x,\ x^0),\\ which\ are\ a,b\ and\ c\ respectively.[/tex]
[tex]Hence,\\4w^2+8w+4=0\\4(w^2)+8(w)+4(w^0)=0\\Hence,\\a=4,\ b=8,\ and\ c=4.[/tex]
[tex]Now,\\We\ can\ decide\ the\ nature\ of\ roots\ the\ quadratic\ equation\ has,\ by\ looking\\ at\ its\ Discriminant.\\Hence,\\Lets\ first\ find\ the\ Discriminant\ for\ our\ equation:\\[/tex]
[tex]We\ know\ that,\\Discriminant=b^2-4ac\\\\Substituting\ a=4, b=8, c=4\ in\ the\ Discriminant\ Formula,\ we\ get:\\8^2-4*4*4\\=64-64\\=0\\Hence,\\Discriminant=0[/tex]
[tex]We\ also\ know\ that\ if,\\D>0, The\ equation\ forms\ 2\ distinct\ real\ roots.\\D=0,The\ equation\ forms\ only\ one\ real\ root\ exactly\ at\ the\ x-axis.\\D<0,\ The\ equation\ forms\ Imaginary/Complex\ Roots\ or\ basically\ no\ real\ roots.[/tex][tex]Here,\\As\ D=0,\\The\ equation\ forms\ only\ one\ Real\ root\ or\ has\ only\ one\ solution.[/tex]
