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
andrey2020 [161]
3 years ago
13

3x * -2y= -100 Solve for y and x.

Mathematics
1 answer:
Sedbober [7]3 years ago
7 0

Answer:

x=50/3y

y=50/3x

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

You might be interested in
Find the common factor of the given terms 6a^3 b^2 c, 24ab^3 c^4 , 12 abc​
Pachacha [2.7K]

Answer:

Step-by-step explanation:

the way you do it is by checking the letter in every term and seeing which instance has the lowest of that letter (for now pretend the regular numbers, in this case 6 24 and 12, aren't there). Once you do that you'll see that the last term has each variable (letter) to the power of one, so that will be the common factor for the letters. Next, look at the real numbers, and you see that the lowest number each can be divided by is 6. so you have 6abc. I'm tired and I think I explained it in a confusing way, so if you still have questions search up "how to find the greatest common factor in polynomials"

3 0
3 years ago
Twice the first number is eleven more than the sum of the other two numbers. The sum of twice the first number and three times t
lidiya [134]
Well first you have to make variables for each number.
1st - x
2nd - y
3rd - z

first sentence says twice first number so 2x. is means equals so =. eleven more than sum of the other two numbers. sum of other two numbers is (y + z) and eleven more than that is (y + z) + 11. So so this sentence says:
2x = (y + z) + 11

second sentence says sum of twice the first and three times third. twice first is 2x and three times third is 3z. their sum would be (2x + 3z). It it says is one more than second number. So = (y + 1). So so this means:
(2x + 3z) = (y + 1)

third sentence says second number (y) is is equal to sum of first and third (x + z). so;
y = (x + z)

now for the work.

We we can easily solve for a by subtracting the first 2 equations. the way to subtract 2 equations is by subtracting one left side of equal sign from the other equations left side and then doing the same with the right side.

So we will subtract the 1st and second equations we made.
So so left sides would be
2x - (2x + 3z)
2x - 2x - 3z
-3z

right side would be:
y + z + 11 - (y + 1)
y + z + 11 - y - 1
z + 10

now put the sides with an equal sign
-3z = z + 10
-4z = 10
z = -2.5

now we can plug in z into the equations and subtract second and third equations. But but we will subtract opposite sides. So so left minus right and right mi is left after we plug in z:
(2x + 3 (-2.5)) - (x + (-2.5))
2x - 7.5 - x + 2.5
x - 5

other one would be
(y + 1) - y
1

So so put an equal sign and get:
x - 5 = 1
x = 6

now plug x and x into 3rd equation
y = x + z
y = 6 + (-2.5)
y = 3.5

now we have values. You can check answer by plugging values into other 2 equations
6 0
4 years ago
If t x 3/15 = 3/4, what is t.​ Please help! it's due tomorrow for a grade!
xeze [42]

Answer:

t=15/4 or 3.75

Step-by-step explanation:

t x 3/15 =3/4

t x 3/15 ÷3/15 = 3/4 ÷3/15 (Divide each side by 3/15)

t= 3/4 x 15/3

t=15/4 or 3.75

6 0
3 years ago
HELPP!!!!
Snowcat [4.5K]
It’s 2 and easy thank you have nice hope u have fun
3 0
3 years ago
Rob spent 25\%25% more time on his research project than he had planned. He spent an extra hh hours on the project.
MatroZZZ [7]

Answer: 5h represents the number of hours Rob actually spent on the project.


Step-by-step explanation:

Let Rob planned that he will spend x hours in his project.

According to the question,

He spent 25% more time on his project than he planned.

That is,  his actual time = x + 25% of x = 125% of x

Again according to the question,

He spent an extra h hours on his project.

That is,  25% of x = h

\frac{25\times x}{100} = h

x=\frac{100h}{25}

x = 4h

Thus,  his actual time = 125% of x = 125% of 4h = \frac{125\times 4h}{100} = 5h

Which is the required expression.


4 0
4 years ago
Read 2 more answers
Other questions:
  • What is true about the solution of x 2^<br> /2x-6=9/6x-18
    10·1 answer
  • <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7By%7D%7B2%7D%20%20%2B%209%20%3D%206" id="TexFormula1" title=" \frac{y}{2} + 9 = 6
    7·1 answer
  • Which of the following best represents an elevation of 0 feet? A. a mountain top B. a beach C. a sea trench
    14·1 answer
  • What are the like terms in the expression?
    10·2 answers
  • The area of a circle is 81pi square inches. what is the radius
    7·1 answer
  • WILL GIVE BRAINLIEST
    8·2 answers
  • What is the circumference of a circle with a diameter of 12 m
    14·1 answer
  • WILL GOVE BRAINLIST PLEASE HELP
    10·1 answer
  • Brainliest reward need brief working out
    15·1 answer
  • The nth term of a sequence is 45 - 4n<br> Work out the first three terms.
    13·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!