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
saveliy_v [14]
3 years ago
12

Plz help

Mathematics
1 answer:
mixas84 [53]3 years ago
7 0

x2y + z = 9 \\  \\ 1. \: x + 2y + z +  - 2y = 9 +  - 2y \\ x + z =  - 2y + 9 \\ 2. \: x + z +  - z =  - 2y + 9 +  - z \\ x =  - 2y - z + 9 \\  \\  \\ x + y - z = 5 \\  \\ 1. \: x + y - z +  - y = 5 +  - y \\ x - z =  - y + 5 \\ 2. \: x - z + z =  - y + 5 + z \\ x =  - y + z + 5 \\  \\  \\ 3x - y + 2z = 12 \\ 1. \: 3x - y + 2z + y = 12 + y \\ 3x + 2z = y + 12 \\ 2. \: 3x = y - 2z + 12 \\ 3. \:  \frac{3x}{3}  =  \frac{y - 2z + 12}{3}  \\ x =  \frac{1}{3} y +  \frac{ - 2}{3} z + 4

You might be interested in
How do you find the perimeter again?<br> Worth 40 points!
zysi [14]

Answer:

↓↓↓↓↓

Step-by-step explanation:

The perimeter is the length of the outline of a shape. To find the perimeter of a rectangle or square you have to add the lengths of all the four sides. x is in this case the length of the rectangle while y is the width of the rectangle. The area is measurement of the surface of a shape.

8 0
3 years ago
Old Faithful in Yellowstone National Park shoots water 60 feet into the air that casts a shadow of 42 feet. What is the height o
Rudiy27
It will be 90 feet considering the water triangle as shown as the figure
5 0
2 years ago
19.43 as a mixed number.
WARRIOR [948]
<span>19 and 43/100................</span>
8 0
3 years ago
*PLEASE ANSWER DIFFICULT QUESTION* What is the area of the polygon?
LenaWriter [7]

Answer:

Option 4, 64 cm^2

Step-by-step explanation:

The polygon in the shape of a star can be made to be easier to find the area of by cutting it into triangle. For all the "point edges" of the star, we can cut them in half from the vertex to create two right-angled triangles at each edge.

The formula of the area of a triangle is bh/2: the height is given as 6cm, the base is 4cm /2 (after you cut it in half) and so is 2 cm. Since the edges can be cut into two, there are 8 right angled triangles at the edges in total.

To find the area of them:

A=8(bh/2)=8(2*6/2)=48 cm^2

However, we are still missing the part at the centre we haven't found the area of, the square. The area of a square is given by the square of the side length(4cm). Thus, A=4*4=16cm^2

Adding the areas of all the edges and the square:

48 + 16 = 64cm^2

Hence, the area of the polygon is 64cm^2

5 0
3 years ago
Read 2 more answers
Atreya runs 5 1/4 miles in 3/4 of an hour. If Atreyu continues at this rate, how far will he run in an hour?
kogti [31]

Answer: 63/16 = 3 1/16 or 7 if your divide it

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
Other questions:
  • How to solve 235 plus123 in time line
    15·2 answers
  • Where does a median drawn from a vertex of a triangle intersect?
    11·1 answer
  • Jenise is buying a car for $6,310. She wants $600 in upgrades to the car. The TAVT rate is 3.9%. The DOC fee is $500. The title
    8·1 answer
  • Visit CK12.org for Free Online Practice
    12·1 answer
  • The amplitude of y = -2 sin 3x is
    10·1 answer
  • Find x.
    7·1 answer
  • Talk to yuh all in 6 months (another free 50 points)
    12·2 answers
  • Hey! i’ll give brainliest please help
    5·2 answers
  • What is 8 divided by 3/5
    15·1 answer
  • 2. Choose the correct linear equation given the slope and a point P. m= 5/6 (fraction) p = (-6, -2). please help.​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!