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
9966 [12]
3 years ago
9

Solving Systems by Elimination

Mathematics
1 answer:
Karolina [17]3 years ago
8 0

Answer:

x=-2, y=-3. (-2, -3).

Step-by-step explanation:

-5x+4y=-2

2x-7y=17

-------------------

2(-5x+4y)=2(-2)

5(2x-7y)=5(17)

---------------------

-10x+8y=-4

10x-35y=85

-------------------

-27y=81

y=81/-27

y=-3

2x-7(-3)=17

2x+21=17

2x=17-21

2x=-4

x=-4/2

x=-2

You might be interested in
Find the area of the L shape.<br>9 cm<br>8 cm<br>3 cm<br>20 cm​
AfilCa [17]

Answer:

Step-by-step explanation:

(9*20)-(8*6) = 132 sq cm

5 0
3 years ago
What is the simplified form of the expression? 2sqrt18 - 5sqrt32
Morgarella [4.7K]

Answer

26√2

Step-by-step explanation:

The trick here lies in recognizing that both 18 and 32 have factors that are perfect squares:  18 = 2*9 and 32 = 2*16.  Therefore, we can write

2sqrt18 as 2√2√9, or 6√2, and 5sqrt32 as 5√2√16, or 20√2.

Then the original expression, in simplest form, is 6√2 + 20√2, or 26√2

7 0
3 years ago
Help me with this question ​
enot [183]

Answer:

37.2

Step-by-step explanation:

when you turn the small triangle LMN to its right angle to cover the right angle of KLM, you find that they are similar triangles.

therefore the corresponding side lengths are at the same ratio.

LM/KM = MN/LN

LM = 24

MN = 13

we can get LN via Pythagoras of the small triangle

LN² + MN² = LM²

LN² + 13² = 24²

LN² = 24² - 13² = 576 - 169 = 407

LN = sqrt(407) = 20.174241

now back to our main problem

24/KM = 13/sqrt(407)

24×sqrt(407)/13 = KM = 37.2

4 0
3 years ago
Pasta comes with tomato sauce and can be ordered with some, all, or none of these ingredients in the sauce: {onions, garlic, car
Radda [10]

Answer:

FORMULA USED-

NUMBER OF SUBSETS OF A SET WITH n ELEMENTS= 2^n

Here our set is { onions, garlic, carrots, brocoli, shrimp, mushrooms, zucchini, green pepper}

Different variations available for ordering pasta with tomato sauce= 28 = 256 ( As here n= 8)

8 0
3 years ago
What is multiplying ​
OLga [1]

Answer:

obtain from (a number) another which contains the first number a specified number of times.

5 0
3 years ago
Read 2 more answers
Other questions:
  • PLZ HELP! 20 POINTS!
    8·1 answer
  • Look at the pattern below.How should the tird shape be labeled<br>​
    5·1 answer
  • Consider the equations and graph below. Which explains why this system has no solution?
    11·1 answer
  • What is a formula for the nth term of the given sequence? -7, -12, -17...
    11·1 answer
  • (5x^{2}+3x-1)-(3x^{2}-4x-6)<br> find the difference PLEASE HURRY IM TIMED
    7·2 answers
  • If you answer you get the brainlist idk the name
    6·1 answer
  • It cost $2.50 to rent bowling.each game costs $3.25.you have $22. How many games can you bowl
    6·2 answers
  • I need help with this ​
    7·1 answer
  • A town doubles its size every 35 years. If the population is currently 50000, we will the
    15·1 answer
  • If Jamari pays $25 at the beginning of the month, he will pay only $5 per hour for using Vic Sporting facility. The information
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!