Daddybaloaul Daddybaloaul

25-11-2016
Mathematics

contestada

Solve the following system of equations by the substitution method.
10x + 10y = 1
x = y - 3
What is the value of y?
-29/20
31/20
-3/2

Respuesta :

Аноним Аноним

25-11-2016

10x+10y=1
x=y-3
10(y-3)+10y=1
10y-30+10y=1
20y=31
y=31/20

Answer Link

MissPhiladelphia MissPhiladelphia

26-11-2016

By substitution method, we can substitute the lower equation to x of the top equation as follows:

10 (y - 3) + 10y = 1

Then, we solve for y

10 (y - 3) + 10y = 1
10y - 30 + 10y = 1
20y = 31
y = 31/20 <------ second option

Answer Link

Otras preguntas

An image point has coordinates B'(5, -6). Find the coordinates of its pre-image if the translation used was (x - 4, y + 5). A. B(9, -1) B. B(9, -11) C. B(1, -1)

In the life cycle of a plant the haploid phase that makes gametes is the

Consider a human population that consumes a certain resource. Which of the following statements about this situation is most likely to be true? If the size of t

how does land value influence the activities that take place on a piece of land

After a bill has passed one house of Congress, where does the bill then go? the Supreme Court for judicial review the other house of Congress to be debated and

Please Help !!! Need this done asap ! Will reward brainliest, thank you

Draw the tree diagram for the word: antidisestablishmentarianism

Jane is making a suit which requires 2 5/8 yards for the jacket and 1 3/4 yards of the skirt what's the total amount of materials she needs

Cheyanne plans to put $150 into a savings account. She can place her money into an account represented by f(x) = 5x + 150, or into another account represented b

Based on the following etymological information, what is the literal meaning of the word holocaust?