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
Rashid [163]
3 years ago
10

Solve the system of equations by substitution. y=5x-13 5x+2y=19

Mathematics
1 answer:
Assoli18 [71]3 years ago
8 0
<span>  x=<span><span><span><span>3‌</span>‌ and </span>‌</span>‌y</span></span>=<span>2   to check use the first equation y=5x-13  you plug in x which is 3 5 times 3 equals 15 15-13 equals 2 y=2</span>
You might be interested in
In the graphic below,
sukhopar [10]

The external angle is suplementary to the internal angle close to it. We also know that the sum of all the internal angles of the triangle are equal to 180 degrees, this means that the angle "a" is suplementary to the sum of the angles "b" and "c". Through this logic, we can conclude that since:

\begin{gathered} \angle d=180-\angle a \\ \angle b+\angle c=180-\angle a \end{gathered}

Then we can conclude that:

\angle d=\angle b+\angle c

Therefore the statement is true, the exterior angle is equal to the sum of its remote interior angles.

Let's use an example:

On this example, the external angle is 120 degrees, therefore the sum of the remote interior angles must also be equal to that. Let's try:

x=75+45=120

The sum of the remote interior angles is equal to the external angle.

6 0
1 year ago
Convert the following Celsius degrees to Fahrenheit.
Nat2105 [25]

Answer:

a 95

b 932

c 50

d 131

Step-by-step explanation:

formula (C × 9/5) + 32 = F

3 0
2 years ago
Carl bought 19 apples of 2 different varieties to make a pie.The total cost of the apple was $5.10.Granny Smith apples cost $0.2
disa [49]

For this case we propose a system of equations:

x: Let the variable representing the quantity of Granny Smith apples

y: Let the variable representing the number of Gala apples

According to the statement we have:

x + y = 19\\0.25x + 0.30y = 5.10

From the first equation we have to:

x = 19-y

replacing in the second equation:

0.25 (19-y) + 0.30y = 5.10\\4.75-0.25y + 0.30y = 5.10\\4.75 + 0.05y = 5.10\\0.05y = 5.10-4.75\\0.05y = 0.35\\y = \frac {0.35} {0.05}\\y = 7

So, Carl bought 7 Gala apples

On the other hand:

x = 19-7 = 12

So, Carl bought 12 Granny Smith apples

Answer:

Carl bought 7 Gala apples and 12 Granny Smith apples

8 0
3 years ago
In 1992, jason bought a gallon of gas for $1.23. yesterday, he bought a gallon of gas for $2.19. what is the percentage increase
marishachu [46]
1992- a gallon - 1.23dollars
yesterday - 2.19 dollars

2.19dollars - 1.23 dollars = 0.96 dollars
percentage increase is (0.96 / 1.23) x 100 = 78.0%
4 0
3 years ago
You have a bag of 15 marbles. 8 are red. 5 are blue. 2 are green. You asked 15 people to pull a random marble and replace it. Th
slavikrds [6]

Answer:

C.

Step-by-step explanation:

We have 2 probabilities: Theoretical probability and Experimental probability.

We cant know what will happen as it's just probability but both joe and Jill are making educated guesses based on probabilities, just different kinds.

6 0
2 years ago
Other questions:
  • Which of the following shows the graph of y = 4x + 3?
    13·2 answers
  • If John is driving 70 mi/hr and Jim is driving 50 ft/min, who is driving faster?
    14·1 answer
  • Solve 8=3r-1 step by step
    14·2 answers
  • Question: Solve it using the proportion method.​
    14·1 answer
  • 1.) Jasmine earns her regular pay of $9.50 per hour for up to 40 hours of
    6·2 answers
  • Write the following decimals as fractions in simplest form
    8·1 answer
  • Who is correct science or religious​
    8·2 answers
  • PLEASE HELP MATH 11. And 12.
    10·1 answer
  • What is n if the equation is
    13·1 answer
  • Which stem-and-leaf plot represents this data? 80, 81, 91, 92, 66, 55, 54, 30, 55, 79, 78 A stem-and-leaf plot with a stem value
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!