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
Step2247 [10]
3 years ago
10

What is the solution of the system of equations? {3x−1/2y=−7/2 x+2y=1

Mathematics
1 answer:
k0ka [10]3 years ago
4 0
3x -1/2y = -7/2
x = -2y + 1

3 (-2y + 1) -1/2y = -7/2
-6y +3 -1/2y = -7/2
-13/2y = -13/2
y = 1

x = -2(1) + 1
x = -1

Answer = (-1, 1)
You might be interested in
Find the number to add to x^2-18x
pentagon [3]

Answer:

A. add 81; (x-9)^2

Step-by-step explanation:

The perfect square formula

(a-b)^2=a^2-2ab+b^2

Rewrite expression x^2-18x as follows:

x^2-2\cdot 9\cdot x

So, to form a perfect square, +9^2 is missed.

When we add 9^2=81, we will get

x^2-2\cdot 9\cdot x+9^2=(x-9)^2

4 0
3 years ago
Is a Unit rate the same thing as a Proportion?
Norma-Jean [14]
The unit rate is also known as the constant of proportionality, but not as a proportion. 
8 0
3 years ago
A bag contain 5 red marbles,4 green marbles and 1 blue marble. A marble is chosen at random from the bag and not replaced; then
jarptica [38.1K]

Answer:

\frac{2}{15}

Step-by-step explanation:

GIVEN: A bag contain 5 red marbles,4 green marbles and 1 blue marble. A marble is chosen at random from the bag and not replaced, then a second marble is chose.

TO FIND: What is the probability both marbles are green.

SOLUTION:

Total marbles in bag =10

total number of green marbles =4

Probability that first marble will be green P(A)=\frac{\text{total green marbles}}{\text{total marbles}}

                                                                    =\frac{4}{10}=\frac{2}{5}

Probability that second marble will be green P(B)=\frac{\text{total green marble in bag}}{\text{total marble in bag}}

                                                                                    \frac{3}{9}=\frac{1}{3}

As both events are disjoint

probability both marbles are green =P(A)\times P(B)

                                                           =\frac{2}{5}\times\frac{1}{3}=\frac{2}{15}

Hence  the probability both marbles are green is \frac{2}{15}

8 0
3 years ago
For which value is the absolute deviation from the mean equal to 3?
Nesterboy [21]

Answer: 26

Step-by-step explanation: Take the mean of the 5 #'s (23). Which # is 3 away from 23? 26.

7 0
3 years ago
The sum of two numbers is 19 and there difference is 7 what are the two numbers
Zielflug [23.3K]

Answer:

The two numbers are 13 and 6.

Step-by-step explanation:

x+y=19

x-y=7

-----------

2x=26

x=26/2

x=13

13+y=19

y=19-13

y=6

x=13, y=6.

5 0
3 years ago
Read 2 more answers
Other questions:
  • the PTA makes a $5.00 profit on each school sweatshirt sell. If they made a profit of $2,170.00, how many sweatshirts did they s
    13·1 answer
  • If F'(x)=<img src="https://tex.z-dn.net/?f=%20%5Csqrt%7B1%2Bx%5E%7B3%7D%20%7D%20" id="TexFormula1" title=" \sqrt{1+x^{3} } " alt
    15·1 answer
  • What is the value of the expression 5b+3c-20+3b-15c+4 when b= 2 and c= -3
    11·1 answer
  • An angle measures 143.4° more than the measure of a supplementary angle. What is the measure of each angle?
    9·1 answer
  • Solve each system of equations algebraically. y=x+5, y=6​
    9·2 answers
  • What is the midpoint of a segment shown below?
    6·2 answers
  • PLEASE HELP!!!! WILL GIVE BRAINLIEST!!!!!
    7·1 answer
  • Which is the most efficient way to solve this equation?
    8·2 answers
  • What is the slope of (-8, -3) (-24, 1)
    6·1 answer
  • Use the distributive property to simplify the expression 1/5(2a-15b+5/6c)+7b.​
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!