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
k0ka [10]
3 years ago
14

3x - 4y = 18x + 3y = -7​

Mathematics
1 answer:
Mnenie [13.5K]3 years ago
4 0

Answer:

x=2, y=-3

Step-by-step explanation:

x+3y+-7

move variable to the right and -3y from each side

x+3y-3y=-7-3y

x= -7-3y

3x -4y=18

3(-7-3y)-4y=18

solve for y, distribute

-21-9y-4y=18

collect like terms

-21-13y=18

move constant and change sign

-13y=18+21

add

-13y=39

divide by -13

y= -3

substitute

x=-7-3(-3)

solve

x=2

You might be interested in
The quotient of two numbers is 21. Their difference is 60.What are the two numbers?
goldenfox [79]
The numbers are 63 and 3
4 0
3 years ago
Number line solutions to n>-2
docker41 [41]

Answer:

start at -2 then go right

Step-by-step explanation:

then leave a arrow mark me brainiest.

5 0
2 years ago
There are equal numbers of both red and black cards in a deck of 52.
amid [387]

Answer:

A) there are 13 cards per suit and 4 suits, a total of 52 cards. So there are 13*2=26 red cards in a deck of 13*4=52, the odds of drawing a red card are 26/52=1/2=50%

B) Again outside knowledge is required, you name four suits but not their colors. Nonetheless, unless this is a very unusual deck, the diamonds and hearts are red, spades and clubs black. So that’s 2 red suits out of 4 suits. 2/4=1/2=50%

C) there are 2 black suits and 2 red suits. The odds of getting a red card are 2/(2+2)=2/4=1/2 or 50%

Each of those answers is a different way to figure the odds, they come out the same each time, as expected.

However, what if we assume that you mean… when drawing a 5 card poker hand? Or when Penn Jillette asks you “is this your card?”+ Or if you draw every card in the deck? Or if you are playing some macabre game in which you die if you draw the ace of spades but you may only stop drawing if you draw a red card?

There are myriad possible meanings to your question, I’ve just made the simplest assumption and given the odds on that… but my answer is woefully incomplete.

+ Hint, when Penn Jillette asks you “is this your card” your card is always the 3 of clubs. So… 0% chance.

7 0
3 years ago
Claire runs a rooftop nursery in the heart of the city. One day, she cuts 25 tulips, 32 violets, and 40 sunflowers. She sells th
jekas [21]

Answer:

(2) and (3)

Step-by-step explanation:

(2) shows the total cost of the flowers, minus 10% of the total cost, and 100% - 10% = 90%

(3) shows them taking 90% of the total cost, just like (2)

4 0
3 years ago
Please help me mane fr
VMariaS [17]

Hi There!

Answer:

25x² - 4

Step-by-step explanation:

Solve: (5x - 2)²

Step 1: 25x² - 2²

Step 2: 25x² - 4

Hope This Helps :)

7 0
3 years ago
Other questions:
  • A typical household spends about $300 annually to heat water. Tankless water heaters can save 30% of this cost. How much money c
    12·1 answer
  • What is the sum of 3/8 and 1/16
    15·1 answer
  • Math question below where do i place
    14·1 answer
  • What is the slope of the line
    12·1 answer
  • what is 1/4 of 24.................................................................................................
    8·2 answers
  • A race car travels 276 feet each second.
    12·1 answer
  • A hard one, help me out!
    14·2 answers
  • What is the area of the segment?
    11·1 answer
  • Explain how to find the square root of a perfect square​
    11·1 answer
  • Solve -4x – 8y = -48<br> 8x + 3y = -34.
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!