−15(x−4)=−2 the 15 is one fifth pls help
6X + 8Y - 4Z = 5
1X + 2Y + 5Z = 9
9X - 3Y + 3Z = 6
Por favor cómo se resuelve esta matriz por método Gauss-Jordan
Responder:
la solución (x, y, z) es (4.48, 4.86, -1.04)
Explicación paso a paso:
Dadas las ecuaciones simultáneas;
6X + 8Y - 4Z = 5 .... 1
1X + 2Y + 5Z = 9 ... 2
9X - 3Y + 3Z = 6 .... 3
Primero necesitamos reducir el sistema de ecuaciones
Ecuación 1 * 1
Ecuación 2 * 4
__________
6X + 8Y - 4Z = 5
4X + 8Y + 20Z = 36
Restar
6x-4x - 4z-20z = 5-36
2x-24z = 31 ... 4
también
ecuación 2 * 3
ecuación 3 * 2
_______________
1X + 2Y + 5Z = 9 * 3
9X - 3Y + 3Z = 6 * 2
_______________
3x + 6y + 15z = 27
18x - 6 años + 6z = 12
Agregar
3x + 18x + 15z + 6z = 27 + 12
21x + 21z = 39 ...... 5
Resolviendo 4 y 5
2x-24z = 31 ... 4 * 21
21x + 21z = 39 ...... 5 * 2
____________
42x - 504z = 651
42x + 42z = 78
Sustraer
-504x - 42z = 651-78
-546z = 573
z = -573/546
z = -1.05
Sustituye z = -1.05 en 4
De 4;
2x-21z = 31
2x - 21 (-1,05) = 31
2x + 22,04 = 31
2x = 31-22.04
2x = 8,96
x = 8,96 / 2
x = 4,48
Obtener y
De 2:
X + 2Y + 5Z = 9
4.48 + 2y + 5 (-1.04) = 9
2 años + 4,48-5,2 = 9
2y = 9 + 0,72
2 años = 9,72
y = 9,72 / 2
y = 4,86
Por tanto, la solución (x, y, z) es (4.48, 4.86, -1.04)
The ratio of boys to girls at a movie is 5:4 . If there are 16 girls , how many boys are at the movie?
Answer:
,it's 15. and here's why: if i pick 4,its makes 12 because 3x4=12 and if you put 3 with 5,you get 15 which is the answer.
Step-by-step explanation:
What is the value of the expression below when x equals 4?
13 + 15x
Answer:
73
Step-by-step explanation:
Answer:
73
Step-by-step explanation:
13+15*4
13+60
73
The Johnson family is taking a road trip. They travled 456 miles in 8 hours. James said their rate is 57 miles per hour.
Do you agree with James? Explain
Answer:57
Step-by-step explanation:
I would do 456/8 to figure out how many miles they went every hour, 456/8 is 57 so James is correct.
Probability tree diagram
Answer:
?
Step-by-step explanation:
can you explain a little more
use long or synthetic division to find the following quotients
(x^3+2x^2!22x-45)÷(x+5)
Answer:
[tex]\boxed{\textsf{ The quotient is $\sf x^2-3x-7$ and the remainder is (-10).}}[/tex]
Step-by-step explanation:
Here we will be using long division method to find the quotient . Here we need to divide (x³+2x²-22x-45) and (x+5) . So lets divide .
x+5) x³+2x²-22x-45 ( x² -3x -7
x³ + 5x²
- -
______________
- 3x²-22x -45
-3x² -15x
+ +
______________
-7x -45
-7x -35
______________
-10
Quotient = x² -3x -7
Remainder = (-10)
★Hence the quotient is x² -3x -7 and the remainder is (-10) .A car depreciates in value each year. Which of the following is NOT true about the value of the car after t years
Answer:
The car will be worth more in 20 years than the amount it was purchased for.
Step-by-step explanation:
If you look at the graph you see a downward trend, not an upward. That makes it impossible for it to be worth more Hopefully this helps.
Answer: B (top right)
Step-by-step explanation:
What is the lateral surface area of the solid?
Derek has a bird that weighs 3 pounds. Use the double line diagram below to help you determine approximately how many kilograms this bird weighs.
2 lines. The first line is labeled Pounds and has 6 marks, equally spaced apart, and every other mark labeled 3, 5, 7, respectively. The second line is labeled Kilograms and has 6 marks, equally spaced apart, and every other mark labeled, 1, 2, 3, respectively.
(2 points)
1.5 kilograms
3 kilograms
5.5 kilograms
6 kilograms
Answer:
about 1.5 kilograms
Step-by-step explanation:
3 pounds=1.36078 so that is closer to the answer 1.5 kilograms
Answer:
1.5
Step-by-step explanation:
i took the test
Find each angle measure to the nearest degree please help
9514 1404 393
Answer:
4°48°Step-by-step explanation:
The inverse cosine function of your calculator is used to find the angle from the cosine value. (Be sure your calculator is set to 'degrees' mode.)
1) A = arccos(0.9976) ≈ 4°
2) U = arccos(0.6691) ≈ 48°
What is the volume, in cubic inches, of a cylinder whose diameter is 6
inches and whose height is 24 inches?
how many millimeters are in 7 liters
7 liter = 7000000 cubic millimeters
HELP HELP PLSSSSSSSSSSSSSSSSSSSSSSSS
Answer:
19
Step-by-step explanation:
31 +9 =40
40 by 2 = 20
9-5=4
4 by 4= 1
20-1= 19
Find the equation of a line with the given information:
f(- 6) = 8 and f( - 8) = – 1.
Wrote answer in point slope form
Answer:
[tex]y -8= \frac{9}{2}(x +6)[/tex]
Step-by-step explanation:
Given
[tex]f(-6) = 8[/tex]
[tex]f(-8) = -2[/tex]
Required
Determine the equation in point-slope form
The general function notation is:
[tex]f(x) = y[/tex]
So, in [tex]f(-6) = 8[/tex]
[tex](x_1,y_1) = (-6,8)[/tex]
[tex]f(-8) = -1[/tex]
[tex](x_2,y_2) = (-8,-1)[/tex]
Calculate the slope (m)
[tex]m = \frac{y_2 - y_1}{x_2-x_1}[/tex]
[tex]m = \frac{-1-8}{-8-(-6)}[/tex]
[tex]m = \frac{-1-8}{-8+6}[/tex]
[tex]m = \frac{-9}{-2}[/tex]
[tex]m = \frac{9}{2}[/tex]
The equation is then calculated as:
[tex]y -y_1= m(x-x_1)[/tex]
[tex]y -8= \frac{9}{2}(x - (-6))[/tex]
[tex]y -8= \frac{9}{2}(x +6)[/tex]
PLEASE HELP ME THIS IS TIMED
find the value of x srt :(
Answer:
3
Step-by-step explanation:
a- ¿Quiénes se oponían a Rosas?
Answer:
Los de los claveles, que tenían competencia con ellos
8. Do the representations below define a function? *
y =
x - 2
Yes, it is a function.
No, it is not a function.
Answer:
Step-by-step explanation:
Yes it is a function. Every x has only 1 y associated with it.
HELPPPPOMOGMGOGMGOGKM PLS ANSWER THIS CORRECTLY PLZZZ THIS IS FOR A VERY IMPORTANT TEST YOUWILL GET BRAINLIEST HELP
Answer:
i cant give u the answer but here is an example hope this helps slope = "rise over run" the difference in y values divided by the difference in x values
= 6/-3 = -2 = m. It's negative because as x increases, y decreases
plug that into the point slope formula, with either point. generally use the most simple point
y-h= m(x-k) where m= -2 and (k,h) = (2,-2)
y+2 = -2(x-2)
simply if you want
Y = -2x +4 -2 = -2x +2
or
2x +y = 2
Step-by-step explanation:
Answer:
Your slope is -1
Your y inter is -3
Step-by-step explanation:
Hope this helps you :)
$0.25 per bottle water
$0.40 per bottle water
$0.50 per bottle water
6-pack
12-pack
24-pack
Answer:
24-pack
Step-by-step explanation:
you are paying less per bottle than the other 2 packs.
Jake and Natalya both have jobs that pay by the hour. The amounts they earned based on various numbers of hours worked are shown in the tables. Which of these statements is correct? Immersive Reader
A. If the amount Abby earns can be described by p=11.75h, where p is her pay and h is the number of hours worked, the Abby earns more per hour than Jake and less per hour than Natalya.
B. If the amount Bobby earns can be described by p=10.75h, where p is his pay and h is the number of hours worked, then Bobby earns less per hour than Jake and Natalya.
C. If the amount Deion earns can be described by p=12.25h, where p is his pay and h is the number of hours worked, the Deion earns more per hour than Jake and Natalya.
D. If the amount Frederica earns can be described by p=12.75h, where p is his pay and h is the number of hours worked, then Frederica earns less per hour than Jake and Natalya.
Mr. Tanner bought some boxes of markers with 18 markers in each box. He kept 2 markers and gave the rest to his students. Use the equation below to calculate the number of boxes (b) he bought. 18b – 2 = 214
Answer: 18b-2+2=214 +2
Step-by-step explanation:Add 2 both sides of the equation
Answer:
b = 12; he bought 12 boxes.
Step-by-step explanation:
18b - 2 = 214 (subtract 2 on both sides)
18b = 216 ( divide 18 on both sides to get 'b' alone)
b = 12
Write twenty three and four hundredths as a decimal
Answer:
23.04
Step-by-step explanation:
Answer:
23.04
I really hope you have really nice day and if you need any help whatsoever im here to help. Could i have brainleist/crown?
Solve each single-step equation. Show your work. -15+n=-9
Answer:
6
Step-by-step explanation:
-15+6 means it goes minus basically its 15-6(-15+6)=-9
Answer:
n=24
Step-by-step explanation:
First add 15 to the right side equaling 24. Therefore n=24
Which quadrants are (-4,5) in
Answer:
Quadrant 2
Step-by-step explanation:
Take a look at the picture I added it should help you on futures questions like this :)
Please help :( Find X.
Round to the nearest tenth.
One bottle contains 250 ml of juice. Soham wants 2 liters of juice. How many bottles should he buy?
Answer:
8 bottles
Step-by-step explanation:
On which triangle can the law of cosines be applied once to find an unknown angle measure? Law of cosines: a2 = b2 + c2 – 2bccos(A) Triangle X W Y is shown. Angle X Y W is a right angle. The length of hypotenuse W X is y, the length of X Y is a, and the length of W Y is 9. Triangle W X Y is shown. Sides W X and X Y are congruent. The length of W Y is 7. Triangle W X Y is shown. Angle X Y W is 76 degrees. The length of X Y is 5, the length of W Y is 10, and the length of W X is y. Triangle W X Y is shown. The length of W X is 10, the length of X Y is 8, and the length of W Y is 16.
Answer:
C) Angle X Y W is 76 degrees. The length of X Y is 5, the length of W Y is 10, and the length of W X is y.
Step-by-step explanation:
On which triangle can the law of cosines be applied once to find an unknown angle measure?
The Law of cosines is given as:
a² = b² + c² - 2bccos(A)
From the options given above, the correct option is Option C
C) Angle X Y W is 76 degrees. The length of X Y is 5, the length of W Y is 10, and the length of W X is y.
This is because:
Law of Cosines helps us to find an unknown side of a triangle when we are given 2 known sides and 1 angle.
In the above question, we are given angle 76 degree, and the length of two sides: The length of X Y is 5, the length of W Y is 10
The unknown side is the length of W X which is represented as y.
Hence, Option C is the correct option.
Answer:
D
Step-by-step explanation:
I got it right on my program.
ANSWER ASAP
Which situation can be represented by this equation?
6 + 0.5x =26
A. Anne earns money for walking dogs. She charges $6 per
walk plus $0.50 per dog. What is x, the amount of money
Anne charges to take one doge on 26 walks?
B. Anne pays $6 to enter a carnival and $0.50 for every ride
she goes on at the carnival. What is x, the number of rides
Anne can go on if she has $26 to spend at the carnival?
C. Anne earns $6.50 per hour babysitting. What is x, the
number of hours Anne babysits if she earns $26?
D. Anne is downloading a game and some songs to her phone. The game cost $6, and each song cost $0.50.
What is x, the total amount Anne pays for the game and 26 songs?
Choose the number that correctly completes the ratio table.
Answer:
its 8:9
Step-by-step explanation:
It would be 8 because you can see that the top row multiplies 16 by two in the exact spot where the missing number is.