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
IgorLugansk [536]
3 years ago
12

Y=4x x+y=5 use substitution method

Mathematics
1 answer:
dalvyx [7]3 years ago
6 0

Answer:

x = 1, y = 4

Step-by-step explanation:

y = 4x

x + y = 5

Since 4x is equal to the variable y, we can substitute it in for y in the second equation.

x + (4x) = 5

Solve for x.

x + 4x = 5

5x = 5

5x/5 = 5/5

x = 1

Now that we have solved for x, we need to solve for y.

y = 4x

x = 1 so substitute the x with 1.

y = 4(1)

y = 4

We can plug both of our answers into any one of the given equations to check our work

x + y = 5

x = 4 and y = 1

4 + 1 = 5

5 = 5

Our answers check out!

You might be interested in
a buret is a tool designed to transfer precise amounts of liquid .A buret initially contains 70.00 millimeters of a solution and
katrin [286]

Let:

Vbu= Volume of the buret

Vbk= Volume of the beaker

A buret initially contains 70.00 millimeters of a solution and a beaker initially contains 20.00 ml of the solution the buret drips solution into the Beaker. each drip contains 0.05 mL of solution, therefore:

x = Number of drips

a = volume of each drip

\begin{gathered} Vbu=70-ax \\ Vbk=20+ax \\ \text{where:} \\ a=0.05 \\ Vbu=70-0.05x \\ Vbk=20+0.05x \end{gathered}

after how many drips will the volume of the solution in the buret and beaker be equal ?​ Vbu = Vbk:

\begin{gathered} Vbu=Vbk \\ 70-0.05x=20+0.05x \\ \text{Solve for x:} \\ 0.1x=70-20 \\ 0.1x=50 \\ x=\frac{50}{0.1} \\ x=500 \end{gathered}

5 0
1 year ago
Anybody know this ?????
sammy [17]

Answer:

The correct answer is  option C

They are complementary angles

Step-by-step explanation:

From the figure we can see two angles <ABC and <LMN,

<u>To find the correct option</u>

From figure we get,

m<ABC = 20°° and m<LMN = 70°

m<ABC + m<LMN = 20 + 70 = 90°

Therefore <ABC and <LMN are complementary angles

The correct answer is option C

They are complementary angles

7 0
4 years ago
I have been stuck on this all day, please explain how to do this
german

Answer:$3,700

Step-by-step explanation:

Gross sales are the total amount of sales a company earned throughout a specific period of time, without taking into consideration any costs involved with running a business. Gross sales do not factor in expenses related to running a business, also known as cost of goods sold (COGS), which get deducted when calculating net sales. For example, they do not account for costs associated with item production, employee wages, building rent, returns, theft or sales tax.

Gross Sales = $3,700

8 0
3 years ago
Can someone please help me on this question? This question has 2 answer choices. Thank you.
grin007 [14]
Hello!

To solve this you have to find the ratio between the two cylinders

Cylinder 1 height is 30
Cylinder 2 height is 20

this is a 30:20 ratio

This can be reduced to a 3:2 ratio

Now you look for one that are also equal to 3:2

3 * 7 = 21
2 * 7 = 14

The answers are 3:2 and 21:14

Hope this helps!
4 0
3 years ago
Given: -1/2x &gt; 6.
IgorC [24]

Answer:

{x | x R, x<-12}

Step-by-step explanation:

SO basically think of it as x is a teenager that wants to be alone. so  have to figure out how to get everyone on the otehr side of their bedroom door (>)

so you are going to do this

-1/2x>6

/-1/2x  /-1/2x

x<6/-1/2

x<6*-2/1

x<-12

7 0
3 years ago
Other questions:
  • What is the diver’s gravitational potential energy just before the dive
    5·2 answers
  • Which expression can be used to find the area of the rectangle shown on the coordinate plane?
    11·2 answers
  • A pension account has $150,000 invested in a mutual fund, and expects a 6.4% annual return. After how many years would this inve
    12·2 answers
  • The polynomial P(x)=3x^3+2x^2-6x has _ local maxima and minima. Also please explain how to do it if you can.
    8·1 answer
  • How to write 50 hundredths
    7·1 answer
  • The price of apples at a farm is $1.67 per pound. Which equation can be used to determine c, the total price of n pounds of appl
    8·1 answer
  • Estimate the solution to the system of Equations
    11·1 answer
  • What is the value of x in the figure below?
    9·2 answers
  • An item is regularly priced at $31 . It is on sale for 65% off the regular price.
    10·1 answer
  • I really need help! ANYONEEEEE
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!