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
Mrac [35]
3 years ago
8

Solve the following system of equations algebraically. Verify your solution either graphically or by using matrices.

Mathematics
1 answer:
LiRa [457]3 years ago
5 0
3x - y = 0 . . . (1)
5x + 2y = 22 . . . (2)

From (1), y = 3x . . . (3)

Putting (3) into (2) gives:
5x + 2(3x) = 22
5x + 6x = 22
11x = 22
x = 2

From (3), y = 3(11) = 33

x = 11, y = 33.
You might be interested in
Solve the Quadratic Equation By Completing the Square<br> b^2-15b-54=0
vladimir1956 [14]
b^{2}-15b-54=0. \newline&#10;b^{2}-15b=54. \newline&#10;b^{2}-15b+(\frac{15}{2})^{2}=54+(\frac{15}{2})^{2}. \newline&#10;(b-\frac{15}{2})^{2}=\frac{441}{4}. \newline&#10;b-\frac{15}{2}=\pm\frac{21}{2}. \newline&#10;b=\pm\frac{21}{2}+\frac{15}{2}. \newline&#10;b_1 = -3, b_2 = 18.
3 0
3 years ago
Please help me, i don’t understand this question nor how to do it !!!!
Fantom [35]

Step-by-step explanation:

See attached picture.

First, compare the highest term of the dividend (x²) to the highest term of the divisor (x).  We need to multiply the divisor by x.

When we do that, we get x² + 5x.  Subtracting this from the dividend, we get -9x + 11.

Now repeat the process.  Compare the highest term of the new dividend (-9x) to the highest term of the divisor (x).  We need to multiply by -9.

When we do that, we get -9x − 45.  When we subtract from the new dividend, we get 56.

So the quotient is x − 9, and the remainder is 56.

6 0
3 years ago
The value of y varies directly with x. If x = 7, then y = 15.
Alona [7]

Answer:

5

Step-by-step explanation:

mark me brainliest plz

8 0
3 years ago
Read 2 more answers
Can you help me plssssss
photoshop1234 [79]
120 square centimeters i think?
8 0
2 years ago
Read 2 more answers
Two minor league baseball players got a total of 214 hits. Washington had 20 more hits than Sanchez.find the number of hits for
Lelu [443]

Answer:

Sanchez-97

Washington-117

Step-by-step explanation:

3 0
2 years ago
Other questions:
  • Which number is IRRATIONAL? A) 1 B) 125 C) 18 2 3 D) 289 E) 9.4
    6·2 answers
  • A circular mat has a circumference of 220 centimeters. Find the radius rounded to the nearest whole number.
    6·1 answer
  • Solve the equation. 6x + 7 = 8x – 15
    12·1 answer
  • A square playing field has an area of 1,255 square yards.about how long is each side of the field
    5·1 answer
  •  Given that 3^10 = 59 049 , what is 3^-10 expressed as an exact value?
    9·1 answer
  • A middle school with 375 students has 125 students in the eighth grade. Irene says that the eighth-grade class makes up of the s
    9·1 answer
  • Simplify -5 + 3d + 6 - 4d
    12·1 answer
  • Dave can clean pools at a constant rate of 3/5 pools/hours , What is the ratio of the number of pools to the number of hours?
    8·1 answer
  • What is equivalent to (-3)^-^3
    11·1 answer
  • LOOKING FOR COCO!!! COCO WHERE R U???
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!