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
Aleksandr [31]
3 years ago
12

-4x+y= 6 -5x-y=21 what is the answer​

Mathematics
1 answer:
bekas [8.4K]3 years ago
6 0

Answer:

x=15

Step-by-step explanation:

21-6=15

-4x+y=-5x-y=15

x+y=-y=15

x=15

You might be interested in
Luis distributes 49 roses equally among 7 friends. Then, 3 of his friends combine the roses they received to make a bouquet. How
antoniya [11.8K]

Answer:

21 roses

Step-by-step explanation:

49 / 7 = 7

Each friend got 7 roses.

7 x 3 = 21

3 friends combine their roses together, making a bouquet of 21 roses.

3 0
3 years ago
Each team in the softball league plays each of the other teams exactly once. If
Aleks04 [339]
<span>Each team in the softball league plays each of the other teams exactly once. For every game, there is 2 team playing. The order is not important because  A vs B is same as B vs A
So you just need to makes a combination of 2 that have a result of 21. If there is t number of teams, the number of matches would be:
tC2 = t!/2!(t-2)! = 21
</span>t! / (t-2)! = 21 *2
(t)(t-1)= 42
t^2 -t -42=0
(t-7)(t+6)
t=7 ; t=-6

Excluding the minus result, you got 7 teams.
6 0
3 years ago
Helps, is it 64 111 or 90?​
charle [14.2K]

Answer:

111

Step-by-step explanation:

7 0
3 years ago
Consider the relationship below, given . Which of the following best explains how this relationship and the value of sin can be
vova2212 [387]

Answer:

The values of sin θ and cos θ represent the legs of a right triangle with a hypotenuse of 1; therefore, solving for cos θ finds the unknown leg, and then all other trigonometric values can be found.

5 0
3 years ago
Read 2 more answers
What is 8+7times15 so what is it tell me now
Inessa05 [86]
The answer is 113. As said by the calculator


5 0
3 years ago
Other questions:
  • Which of the following is a multiple of 5
    12·2 answers
  • A furniture company manufactures desks and chairs. Each desk uses four units of wood, and each chair uses three units of wood. A
    15·1 answer
  • a discount store marks up the merchandise it sells by 55%. If the wholesale price of a particular item is $25, what should be th
    11·1 answer
  • What is the area of triangle ABC
    6·2 answers
  • The strong tendency of certain minerals to break along smooth parallel planes is known as
    14·1 answer
  • Quadrilateral ABCD is a a square and the length of BE is 6 cm.<br><br>What is the length of AC?
    12·1 answer
  • Evaluate 4^radical sign 8 to the nearest ten thousandth.
    6·1 answer
  • Write a quadratic equation that has an AOS at x = -6 and a maximum of 5 and no vertical stretch or shrink.
    9·1 answer
  • I'm confused, please help. :/
    8·2 answers
  • 100 POINTS!!!! PLEASE HELP WITH THIS :(( I WILL GIVE YOU A GOOD RATING/MARK YOU BRAINLIEST
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!