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
Serga [27]
3 years ago
8

Please help me with this problemplssssssssssss

Mathematics
1 answer:
Pepsi [2]3 years ago
7 0

Answer:

The solution is: x = -5.2, y = 11.2

Step-by-step explanation:

We are given the following system of equations:

-7x-2y = 14

6x + 6y = 18

Simplifying the second equation by three, we have that:

x + y = 6

y = 6 - x.

Replacing in the first equation:

-7x - 2(6 - x) = 14

-7x - 12 + 2x = 14

-5x = 26

5x = -26

x = -5.2

y = 6 - x = 6 - (-5.2) = 6 + 5.2 = 11.2

The solution is: x = -5.2, y = 11.2

You might be interested in
Brad says that if a second number is 125% of the first number than the second number must be 75% of the second number is he corr
elena-s [515]

Answer:

Incorrect.

Step-by-step explanation:

Let, the first number is x, and the second number is y. Given, the second number is 125% of the first number. So, the equation will be

y = 1.25 x

Or, y= 5/4x

Now, multiplying it with 4/5, we get, x= 4/5y

Or, x= 0.80 y

But, Brad is saying the first number must be 75% of the second number. But here we see that the first number is 80% of the second number. That's why Brad is incorrect.

5 0
3 years ago
Can someone help me with this math homework please!
ZanzabumX [31]

Answer:

You can do this on ur own

Step-by-step explanation:

Trust me

4 0
3 years ago
Read 2 more answers
A projectile was launched straight up from the ground with an initial velocity of 48 ft/s. The height of the projectile t second
alex41 [277]
Factor f(t) and you can identify the values of t for which the height is zero.
.. f(t) = -16t(t -3)

The projectile lands after 3 seconds in the air. (selection A)

8 0
3 years ago
PIUWawilities
blondinia [14]

Answer:

23.44%

Step-by-step explanation:

The probability of getting a 4 on the first 2 throws and different numbers on the last 5 throws = 1/6 * 1/6 * (5/6)^5

= 0.01116

There are 7C2 ways of the  2 4's  being in different positions

= 7*6 / 2 = 21 ways.

So the required probability =  0.01116 * 21

= 0.2344 or 23.44%.

3 0
3 years ago
1. Given the following relation, determine the inverse relation.
gayaneshka [121]

Answer:

1. a

2. f^{-1} (x)=\frac{x}{2} +2

Step-by-step explanation:

1. Since there is one value of y for every value of x in (−1,0),(−4,5),(3,2),(−3,5), this relation is a function.

2. To find the inverse, interchange the variables and solve for y.

f^{-1} (x)=\frac{x}{2} +2

5 0
2 years ago
Other questions:
  • 1. The table shows the distances, in meters, that each player in a game tossed a ball, and the total number of earned points eac
    6·1 answer
  • Please answer this question!!
    14·1 answer
  • (08.06) A school fair ticket costs $8 per adult and $1 per child. On a certain day, the total number of adults (a) and children
    15·1 answer
  • Wich number could be in his first pattern
    7·1 answer
  • Evaluate [7 - (2 - 5(4 - 2) + 7)] + 2
    11·2 answers
  • Emma's curtain company is making curtains for a local hotel. She wants each curtain to be 24 inches long. At the fabric store, f
    15·1 answer
  • Write the number equal to 5 tens and 13 ones.
    15·1 answer
  • Awnser this for 5 points do you use this app.bc ur lazy and don't want to think​
    6·1 answer
  • HELP MEEEEEE I GIVE BRAINLIST
    15·1 answer
  • Integers, Rational Numbers, and Absolute Value
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!