1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
White raven [17]
3 years ago
6

X+Y-Z=19 2X-3Y+Z=13 3X-5Y-6Z=-15

Mathematics
1 answer:
lawyer [7]3 years ago
7 0

A suitable graphing caculator gives the result

X = 15 25/39

Y = 7 6/13

Z = 4 4/39

_____

If you want to solve this by hand, you can add 3 times the first equation to the second to get

... 5X -2Z = 70

and 5 times the first equation to the third to get

... 8X -11Z = 80

Then Cramer's Rule tells you the solutions for X and Z are

... X = (-160+770)/(-16+55) = 610/39

... Z = (560 -400)/39 = 160/39

From there, you can substitute into any of the equations to find Y. The first one might be most convenient.

... Y = 19 -X +Z = 19 -(15 25/39) +(4 4/39) = 8 -21/39 = 7 6/13

You might be interested in
Evan, Claire, Jaya and Tim are running a 3 km relay race. Evan ran 7/8 of a km,
Vanyuwa [196]

Answer:

11/24

Step-by-step explanation:

7/8 + 11/12 + 3/4 + x = 3 km

7*3/8*3 = 21 / 24

11*2 / 12 * 2 = 22 /24

3*6 / 4*6 = 18/24

21/24 + 22/24 + 18/24 + x = 3

61 / 24 +  x = 3

x = 72/24 - 61/24

x = 11 / 24

Tim has to run 11/24 of the race

7 0
3 years ago
223.6 x 0.0048 rough checks​
Norma-Jean [14]

Answer:

1.07328

Step-by-step explanation:

223.6 x 0.0048=1.07328

8 0
3 years ago
Find the value of x!!!!!!
nevsk [136]

Answer:

Sum of 3 angles in a triangle=180

x+55+72= 180

x+ 127=180

x= 180-127

x= 53

5 0
3 years ago
Read 2 more answers
I will give brainliest to the fastest helpful answer! :) A figure is located at (0, 0), (−3, −4), and (−3, 0) on a coordinate pl
yulyashka [42]

The 3-D shape would be created if the figure was rotated around the x-axis is a cone

<h3>What are 3-D shapes?</h3>

3-D shapes (short form of 3-Dimensional shapes) are shapes that have width, length and height

<h3>How to determine the 3-D shape?</h3>

The coordinates are given as:

(0, 0), (-3, -4) and (-3, 0)

When the above coordinates are plotted on a coordinate plane and the points are connected;

We can see that the points form a right-triangle

See attachment for the shape

As a general rule

Rotating a right-triangle across the x-axis would form a cone

Hence, the 3-D shape would be created if the figure was rotated around the x-axis is a cone

Read more about rotation at:

brainly.com/question/4289712

#SPJ1

5 0
1 year ago
How do I find slope?
Korolek [52]
To find the slope in the graph you need to find two perfect points on the line then count how many times you went up which is the y over how many times you go right which is the x its called the rise/run. To find the slope in the equation use the formula y2-y1/x2-x1.
7 0
3 years ago
Read 2 more answers
Other questions:
  • If an object has an acceleration of 7 m/s, and a mass of 3 kg, what is its force?
    15·1 answer
  • The formula d = rt means that the distance traveled is equal to the rate (speed) times the time. Solve d = rt for r
    10·2 answers
  • 26 was divided by a power of ten to get 0.26. What power of ten was it divided by?
    13·1 answer
  • If you shift the quadratic parent function, f(x) = x^2, right 10 units, what is the equation of the new function?
    5·1 answer
  • Name two planes that intersect in UV in the<br> figure to the right
    10·1 answer
  • The measures of two complementary angles are described by the expression(13y+12) and (20y+12). Find the measures of angles​
    15·1 answer
  • Which of the following is NOT an arithmetic sequence?
    11·1 answer
  • What is: X+2-3= When X=1
    9·2 answers
  • Each interior angle of a regular polygon has a measure of 40.how many sides does the polygon have?​
    6·1 answer
  • 8.3.10 Dave is playing blackjack at his local casino. He starts with $1,000 and on each hand he bets 50% of his money. If he win
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!