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
Norma-Jean [14]
4 years ago
5

Is (3,-2) the solution to this system of equations? Yes or no (circle one) -2x-4y=2 3x+4y=8

Mathematics
1 answer:
rodikova [14]4 years ago
8 0

Answer:

(2,−1)

Explanation:

The quickest way is to use elimination

3x+4y=2

                 +

2x−4y=8

−−−−−

5x      =10

⇒   x=2

Now substitute into one of the original eqns.

3×2+4y=2

6+4y=2

4y=−4⇒y=−1

check in other eqn.

2x−4y=8

2×2−(4×−1)=4−−4=4+4=8√

solns (2,−1)

You might be interested in
. One car traveled 210 miles and drove 20 mph hour faster than a second car drove 150 miles. If the cars were traveling for the
inn [45]

Answer:

The first car was traveling 70 mph, while the second was driving 50 mph.

Step-by-step explanation:

Set the cars as a proportion:

\frac{210}{x + 2}  =  \frac{150}{x}

X represents the speed of the second car. By cross multiplying, you get the following equation:

210x = 150(x + 20)

You solve by distributing 150 to get 210x = 150x + 3000.

Solving for x gets you 50.

That means the first car was going at 50 mph. Adding 20, you get 70 as the speed for the second car.

4 0
3 years ago
It is almost the end of the grading period.I have 730 out of 880 points so far in my math class which means I currently have a B
Murljashka [212]
There is at least 90
4 0
4 years ago
Shamariah collects silk roses. She had 17 silk roses in a vase. Six friends each gave her 3 more roses. How many roses does sham
max2010maxim [7]

Answer: 4535

Step-by-step explanation:

she has 17 slik roses already, and 6 friends give her 3 silk roses each, so that's 6 times 3, which makes 18, and 17 plus 18 is 35, so she has 35 silk roses in all.

4 0
3 years ago
A lamp shade has a radius of 9 inches. What is the circumference of the top of the shade? Use 3.14 to approximate pi. Round your
Black_prince [1.1K]

c = circumference pi = 3.14 r = radius = 9 inches d = diameter c=pi*d The radius is half of the diameter, d = 2r. Then d = 2*9=18. plug into equation. c= pi*d = 3.14*18 round accordingly and you may want to include that the measurement you end up with is in inches.

4 0
3 years ago
Read 2 more answers
The equation h=kp describes h, the height of a stack of p pennies. A stack of 15 pennies is 24 millimeters tall. What is the val
slamgirl [31]
You plug in the values so it would be 24=15k. Divide by 15 on both sides so k=24/15=1.6. :)
8 0
3 years ago
Other questions:
  • A worker can assemble 3 shelf units each hour. During the fifth hour of the shift, there were 115 shelf units in the warehouse.
    6·1 answer
  • Is 8 times as much as 3
    5·1 answer
  • The points plotted below are on the graph of a polynomial. In what range of x-values must the polynomial have a root?
    13·1 answer
  • If The number 0.1111... repeats forever; therefore, irrational number true or false?
    12·2 answers
  • How to get rid of a negative exponent in a fraction?
    9·1 answer
  • Savannah loves predicting the weather. It has been record hot temperatures all week. she is predicting that the weather temperat
    11·1 answer
  • Joes, who is the youngest member of the wrestling team at Northwood High school, is 5 years less than one-half the age of the co
    13·1 answer
  • HELPPP THIS IS DUE SOON! I WILL MARK BRAINLIEST
    8·2 answers
  • I need help with geometry
    15·1 answer
  • There are five nickels and five dimes in your pocket. With replacing, what is the probability that you will pull a nickel the fi
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!