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
inna [77]
4 years ago
10

Solve the following system of equations. Express your answer as an ordered pair in the format (a,b), with no spaces between the

numbers or symbols
2x+7y=-1 and 4x-3y=-19
Mathematics
2 answers:
AVprozaik [17]4 years ago
7 0
Multiply the equation 2x+7y=-1 by -2

add to othe equaiton
4x-3y=-19
<u>-4x-14y=2 +</u>
0x-17y=-17

-17y=-17
divide both sides by -17
y=1

sub back
2x+7y=-1
2x+7(1)=-1
2x+7=-1
minus 7 from both sides
2x=-8
divide both sides by 2
x=-4

x=-4
y=1
(x,y) is normal form
(-4,1) is answer
zzz [600]4 years ago
7 0

Answer:

The answer is (-4,1)

Step-by-step explanation:

You might be interested in
Help plzzzzzzzzzzzzzzzzz
Butoxors [25]

Answer:

6 % is the answer

Step-by-step explanation:

6.50 x 6%=0.39

6.50+0.39=6.89

4 0
3 years ago
A student worked out at a gym continuously for 50 minutes. The graph shows the remaining percentage of the workout as a linear f
Monica [59]

Small problem....

There is no graph!

ill be happy to solve this if i saw a graph

5 0
3 years ago
Y=3(50)x
solmaris [256]

Answer:

y=3(50)×

y=3(50) 8

50×3=150

150×8=1,200

6 0
3 years ago
A researcher records the time it takes to complete a memory task in a sample of 25 participants. He finds that the average parti
alexandr1967 [171]

Answer: It is called a sample statistic.

Step-by-step explanation:

Since we have given that

A researcher records the time it takes to complete a memory task in a sample of 25 participants. He finds that the average participant completed the test in 43 s.

The average time to complete this task is called sample statistic.

As we know that

Sample statistic is the quantity which we get from the sample taken from a any specified population for using this quantity to calculate the same.

In our case, average participant completed the test = 43 sec.

It is sample statistic as we will use to find the average time for the population i.e. 25 participant to get the same calculation i.e. average time.

We will get average time is also equal to 43 sec.

Hence, it is called a sample statistic.

3 0
3 years ago
What are the steps to solving this? I believe the answer is y, but I would like to know step by step. . .
nikitadnepr [17]
So yeah the correct answer is y. I hope this is what u needed.

6 0
4 years ago
Other questions:
  • 30°-60°-90°<br> help me solve this please
    9·1 answer
  • Find the roots of the factored polynomial.
    15·1 answer
  • Find the area and circumference of the figure below.
    12·1 answer
  • Plz help me.. 50 points if you answer all ill give brainliest​
    9·2 answers
  • Round 7.365 to the ones place.​
    8·1 answer
  • A driver in a car traveling at a speed of 21.8 m/s sees a cat 101 m away on the road. How long will it take for the car to accel
    12·1 answer
  • HHHEEEEEEELLLLPPPPPPPPPP
    9·1 answer
  • Solve. 7/3x+1/3x=4+5/3x The value of x is
    7·2 answers
  • Mr. Zhāng received a shipment that
    5·2 answers
  • Simplify<br><br> 1+3^2⋅2−5<br><br> -48<br> 14<br> 15<br> 27
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!