Find k if X=2 and y=1 is a solution of 2x-8y+k/2=0
Answers
Answer:
k=2
Step-by-step explanation:
2x-8y+k/2=0
puting the values of x and y
2*2-8*1+k/2=0
4-8+k/2=0
-4+k/2=0
k/2=4
sing changes if side changed
k=4/2
k=2
We first substituted the X and Y in the equation, so 2 instead of X and 1 instead of Y.
Then I moved the K to make it the subject of the equation by algebra which gave me a -K, but I want k not negative k so I multiplied everything by -1 because, -1 × -1= +1 so K=2.
Related Questions
Nyashid
Solving n/3 - 1 = 8
N/3-1 = 8 in the
Click New. You should now see the equation
Gizmo.
Step One: This equation has two operations, division an
subtraction. Which operation should you undo first?
Choose (drag) the correct step in the
Gizmo
Step Two: What operation should you undo next?
Choose (drag) the correct step in the Gizmo.
Stop & Check: Substitute your solution for n in the equation and
evaluate. Does your solution produce a true statement? If so, your
answer is correct!
TolutionWhat is the solution to n/3-1 = 8?
Answers
Step-by-step explanation:
first you need to tranfer 1 to RHS do the addition
n/3 = 8+1
=) n/3 = 9
then you need to transfer 3 to RHS and multiply
=> n = 9 x 3
there for n = 27
Neil change the oil in his vehicle the car requires 6 quarts of oil if Neil wants to change his or every month for a year how many quarts of oil will Neil need?
Answers
Answer:
72 quarts
Step-by-step explanation:
1 year = 12 months, and Neil changes the oil each month, and each month he uses 6 quarts of oil. So, the number of quarts he will need for a year is
6 + 6 + ... + 6, twelve times, which equals 12(6) = 72 quarts.
Need help with number 5 and number 6
Answers
Answer:
5 d) 9 1/3
6 d) 2
Step-by-step explanation:
Proportions:
5
7 ⇒ 4
BY ⇒3
BY = 7*4/3
BY = 28/3
28/3 = 27/3 + 1/3 = 9 1/3
BY = 9 1/3
6
12 ⇒ 3
8 ⇒ SX
SX = 3*8/12
SX = 2
PLEASE HELP ITS MATH THANK YOUUUU
Answers
Answer:
144%
Step-by-step explanation:
There are multiple ways to do this but here's the way I used:
2.50/100 = .025
Based on this, 1% of 2.50 is 0.025.
6.10-2.50 = 3.6
3.6/0.025 = 144
Based on this, 3.4 is 144 times greater than 0.025 (1%). So 3.4 is a 144% increase.
The sales tax rate is 10%. If Kyle buys a digital camera priced at $579.25, what will be the total cost including tax? Round your answer to the nearest cent:
Answers
Answer:
638.75
Step-by-step explanation:
Well you can actualy do this on a calculator If put in proporly use the 2nd button and push (sin) to get a tax percentage.
Answer:
637.17( not very sure what you mean by round to nearest cent)
Step-by-step explanation:
take the $579.25 and add 10% easiest way is on a calculator
Marco needs to buy cat food. At the nearest store, 6 bags of cat food cost 19.50. How much would Marco spend on 3 bags of cat food. proportional relationships
Answers
6 bags cost 19.50
3 is half of 6
we need to find half of 19.50
in your calculator type 19.50/2
you'll find 9.75,
Hope this helped!
(10pts) Ivan bought three games and paid $65 for all three. The second game was 50% more expensive than the first one. The price of the third game was 50% of the price of the second game. Find the price of the first game.
PLSSSSSSSS HELPPPP NOWWWWWW!!!
Answer:
The price of the first game is $.
Answers
We are required to find the price of the first game
The price of the first game is $20
Given:
let
price of the first game = x
price of the second game = x + 50% of x
= x + 0.5x
= 1.5x
Price of the third game = 50% of 1.5x
= 0.5 × 1.5x
= 0.75x
Total cost of game = $65
Total cost of game = price of the first game + price of the second game + Price of the third game
65 = x + 1.5x + 0.75x
65 = 3.25x
divide both sides by 3.25
x = 65 ÷ 3.25
x = 20
Therefore, the price of the first game is $20
Read more:
https://brainly.com/question/291220
How many centimeters are in a kilometer?
Answers
Answer:
100,000
Step-by-step explanation:
Answer:
there are 100000 meters in 1 kilo meter
Step-by-step explanation:
1/2 to the power of 4
Answers
Answer: 1/16 because 1 to the power of anything is the same. 2 to the power of 4 is 16 so 1/16
Answer:
⅛...yo pienso pq creo va de 4 en cuatro
You deposit $200 in a savings
account that pays a simple
interest rate of 3.25% per year.
How much interest will you earn
after 5 years?
Answers
Answer:
$16.25
Step-by-step explanation:
First, you have to find 3.25*5 which is 16.25.
16.25 is the percent rate of your total interest over the course of 5 years.
In other words, you have to do 200*0.1625 which is 32.5.
So, your answer is $16.25.
Good luck!
Help please I’ll give BRAINLIEST
Answers
Answer:
first one is M=0 and second one is undefined
mr candy man is making bags of candy to reward students in his class. a blue bag contains 7 pieces of candy while a red bag contains 13 pieces of candy. if he has 106 pieces of candy and wants to use them all how many red bags can he make?
(I need help with this asap)
Answers
Triangle KLM is similar to triangle NOP. Find the measure of side PN. Figures are not
drawn to scale.
Answers
Answer:
look at the photo............
2319471, how is this number read?
Answers
Step-by-step explanation:
#G
enjoy. my son haha. lol
4. What is the mode of the data set below? (1 point) 0, 1, 1, 0, 2, 3, 2, 1, 0, 4, 1, 1
Answers
There are 5 1’s and 3 0’s so the mode is 1
It usually helps to sort the values...
0, 0, 0, 1, 1, 1, 1, 1, 2, 2, 3, 4
as this makes finding the median easier as well
will mark brainliest!!
A traveler can choose from 4 airlines, 10 hotels and 5 rental car companies. How many arrangements of these services are possible?
Answers
The area of a rectangular wall of a barn is 33 square feet. Its length is 8 feet longer than the width. Find the length and width of the wall of the barn.
Answers
Answer:
Width=3ft
Length=11ft
let H be the altitude from vertex C. Which proves the first equality in the law of sines
Answers
The sine law of triangles can be proved by dividing the triangle into right-triangles.
Option (c) proves the first equality in the law of sines
From the question, we have:
h equals to the distance from point C to segment AB
The sine of angle is:
[tex]\mathbf{sin(\theta) = \frac{Opposite}{Hypotenuse}}[/tex]
For angle at A, we have:
[tex]\mathbe{\theta = A}[/tex]
[tex]\mathbf{Hypotenuse = b}\\\mathbf{Opposite = h}[/tex]
So, we have:
[tex]\mathbf{sin(\theta) = \frac{Opposite}{Hypotenuse}}[/tex]
Substitute values for Opposite, Hypotenuse and theta
[tex]\mathbf{sin A = \frac{h}{b}}[/tex]
Similarly
[tex]\mathbf{sin B = \frac{h}{a}}[/tex]
Make h the subject
[tex]\mathbf{h = a\ sinB}[/tex]
Substitute [tex]\mathbf{h = a\ sinB}[/tex] in [tex]\mathbf{sin A = \frac{h}{b}}[/tex]
[tex]\mathbf{sin A = \frac{a\ sinB}{b}}[/tex]
Divide both sides by a
[tex]\mathbf{\frac{sin A}{a} = \frac{sinB}{b}}[/tex]
Hence, the correct option is (c).
Read more about proof of sine law at:
https://brainly.com/question/4637169
3
Parallel to y = - -*+2 and goes through the point (5, -7)
S
please help it’s due next period
Answers
This density curve represents the amount of time students spend waiting for their morning bus to school.
if the median of the density curve is 1.5, which value could be the mean of the density curve?
(B) - μ = 2.5
(the answer)
Answers
Answer:
B
Step-by-step explanation:
e2020
solve pls brainliest
Answers
Answer:
53cm
Step-by-step explanation:
11+8+8+11+15=53cm
_-9-2=4
What is the missing number please
Answers
Answer:
28
Step-by-step explanation:
look it up lol
which of the following is true of the angle shown
the measure of the angle is greater than 360
the angle is not in standard position
the terminal side of the angle lies in quadrant 2
the angle can be measured in radians only
Answers
Answer:
the angle is not in standard position
which is closer to one, 7/8 or 8/7?
Explain without converting to decimals or using common denominators.
Answers
Do you mean one as a whole or number?
This is what I have got:
7/8 because it is only 1/8 less than a whole
Use the y- and x-intercepts to write the equation of the line. x- intercept (-6,0), y - intercept (0,-8)
Answers
(The -1.4 is rounded from a repeating -1.33333…)
Type the missing numbers in this sequence:
93, __, __, 87, 85, 83
Answers
Answer:
if you noticed, it is reduces by 2
so the sequence would be
93, 91, 89, 87, 85, 83
-------------------------------------------------
Hope this helps!
Answer:
93,91,89,87,85,83
Look at picure please
Answers
Answer:
[tex]2 {y}^{7} x - 5 {y}^{5} {x}^{2} - 4{y}^{8} {x}^{3}[/tex]
Solve for the unknown angles
Marking you the brainliest provided you got it
right and with step by step explanation
Answers
Step-by-step explanation:
The angles a and b are congruent, also c and x are congruent.
a = b = 180° - 85° = 95° (supplementary, linear pair)c = x = 85° (corresponding, alternate interior)Determine if the equations are intersecting, parallel, or coincident.
-2 +y = 8
- 3x + 4y = 28
intersecting
coincident
parallel
Answers
4 Which graph shows x and y in a proportional
relationship?
A y
35
30
25
20
15
10
5 5
0
0 1 2 3
4 5 6 7 8
B.
Helicopter
У
35
30
25
Height (meters)
20
15
10
5
0
0 1 2 3 4 5 6 7 1
Time (seconds)
C.
Tickets
y y
140
120
100
Cost (dollars)
80
60
10
20
0
0 1 2 3 4 5 6 7 8
Number of tickets
Pizzas
УГ
35
30
25
Cost (dollars)
20
15
10
5
0
0 1 2 3 4 5 6 7 x
Number of pizzas
Answers
Answer: I'm sorry, I dont really know but here are some notes to help you with this.
Step-by-step explanation: https://www.hopewell.k12.pa.us/Downloads/Representing%20Proportional%20Relationship%20-%20NOTES%20COMPLETE2.pdf