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
ANTONII [103]
3 years ago
15

Solving systems of equations algebraically.

Mathematics
1 answer:
Elanso [62]3 years ago
8 0

Answer:

x = 2

y = -1

Step-by-step explanation:

Since it gives you the value of y already, just plug that into the equation, like so:

y = 4x - 9

x - 3 = 4x - 9

<em><u>Subtract the x from both sides:</u></em>

x - 3 = 4x - 9

-x       - x

__________

-3 = 3x - 9

<em><u>Then, add 9 to both sides:</u></em>

-3 = 3x - 9

+9        + 9

________

6 = 3x

<em><u>Divide both sides by 3:</u></em>

2 = x

<em><u>Now plug in x for y:</u></em>

y = x - 3

y = 2 - 3

y = -1

You might be interested in
(10 x 50) x 100 - 200 + 1,000=
ira [324]

Answer:

5,800

Step-by-step explanation:

(10 x 50)= 500 x 100=5000 - 200= 4800+1000= 5,800

6 0
3 years ago
AXYZ has vertices X(-4,2), Y(4.2), and Z(0, - 1). Is AXYZ scalene, isosceles, or equilateral?
ivolga24 [154]

Answer:

Isosceles triangle.

Step-by-step explanation:

In order to determine the nature of the triangle, we will need to get the sides XY, XZ and YZ using the distance formula;

For XY;

X(-4,2), Y(4.2)

XY = √(2-2)²(4-(-4)²)

XY = √(4+4)²

XY = √8²

XY = 8

For XZ;

X(-4,2), Z(0, - 1)

XZ = √(-1-2)²(0-(-4))²

XZ = √(-3)²+4²

XZ = √9+16

XZ = √25

XZ = 5

For XZ;

Y(4.2), Z(0, - 1)

YZ = √(-1-2)²(0-(4))²

YZ = √(-3)²+(-4)²

YZ = √9+16

YZ = √25

YZ = 5

Since XZ = YZ = 5, this shows that two sides are equal. Hence the triangle is an isosceles triangle.

NB: Isosceles triangle only have two of its sides and angles equal

5 0
3 years ago
Add or subtract the linear expressions and simplify:
kherson [118]
0.1(71x+33)
the soultion is
6 0
3 years ago
#2 What is 18.082 rounded to the nearest whole number?
Snezhnost [94]

Answer:

18

Step-by-step explanation:

5 0
3 years ago
If you had:
dimulka [17.4K]
$38 and 10 cents? < >
~
5 0
4 years ago
Read 2 more answers
Other questions:
  • The phone company charges a flat rate of $2.75 plus an additional $0.25 each minute for a long-distance phone call.
    6·1 answer
  • How many kilograms are equal to 5,000 grams?
    7·2 answers
  • The diagram shows the truth values for two statements. What is the truth value of p ∨ q?
    11·1 answer
  • Shavon has $23 to spend on school supplies. She buys a set of colored pencils for $5 and wants to spend the rest on notebooks. E
    6·1 answer
  • Yvonne has an exercise ball that she wants to fill with sand. The ball is 18 in. Across the middle for the diameter. How much sa
    9·1 answer
  • The solution of 3tan2A = 2tanA +1 for 0º≤A≤90º is ____ degrees
    6·1 answer
  • In a circle, a 60 degree sector has an area of 25 pi square feet. what is the radius of the circle?
    12·1 answer
  • Transformation Rule:<br> Translate 4 units right and 3 units up.<br> B<br> Х<br> A
    15·1 answer
  • I NEED HELP WITH THIS FAST!
    14·1 answer
  • Assessment started: undefined. Item 1 What is the median of this data set? {11, 13, 13, 14, 14, 16, 18, 23, 24} Enter your answe
    15·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!