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
Vlada [557]
3 years ago
5

Solve the system of linear equations by substitution.

Mathematics
1 answer:
lakkis [162]3 years ago
3 0

Answer: (6,2)

Step-by-step explanation:

Replace all occurrences of

y with 2x−10 in each equation.

−x+20=14

y=2x−10

Solve for x in the first equation.

x=6y=2x−10

Replace all occurrences of x with 6 in each equation.

y=2x=6

(6,2)

Point Form:

(6,2)

Equation Form:

x=6,y=2

You might be interested in
A train goes 10 miles per hour. How far does it travel in 4 hours
iren [92.7K]

Answer:

40 mph

Step-by-step explanation:

10 miles*4 hours = 40 miles

8 0
3 years ago
Consider 10 married couples. how many ways can 7 married couples be selected from this group
Novay_Z [31]
10c7
=10!/(7!*(10-7)!)
=120
3 0
3 years ago
What is the factored form of a2 – 121?
Flura [38]

Answer:

The factored form a^2-121 is (a+11)(a-11).

Step-by-step explanation:

Given : a^2-121

We have to write the given expression in factored form.

Factor form of an expression is writing the expression in lower power form such that the product of factors given the original expression

Consider the given expression  a^2-121.

We know the algebraic identity x^2-y^2=(x+y)(x-y)

Here a^2-121=a^2-(11)^2.

Comparing with identity stated above , we have x= a , b = 11 , thus, we get

a^2-(11)^2=(a+11)(a-11).

Thus, the factored form a^2-121 is (a+11)(a-11).

7 0
3 years ago
An artist sells original hand painted greeting cards. He makes $2.50 profit on a small card and $4.00 profit on a large card. He
Marysya12 [62]
Since he sells 5 large cards for every 2 small, we can multiply the number of small cards he needs to sell by 2.5 to find how many large cards he needs to sell.

So let x=the number of small cards sold, and 2.5x=the number of large cards sold

The equation is:Total profit=x+(2.5x)

Since a small card is $2.5, a large card is $4, and the total profit will be $10,000 plug those in to make the equation:

10,000=2.5x+4(2.5x)

We can combine the x's to get 10,000=12.5x and then divide both sides by 12.5 to get x=800.

So he needs to sell 800 small cards.

Multiply that by that 2.5.

And he needs to sell 2000 large cards.

3 0
3 years ago
Plz help<br> Which hotspot shows a highlight on this sculpture by Jeff Koons?
Trava [24]

Answer:

id have to go with the front right leg

8 0
3 years ago
Other questions:
  • Jonathon's Yo-Yo has a string that is three and a half feet long. If Jonathon cuts six inches off of the string, how many feet w
    9·1 answer
  • How many 1/2 inch cubes are needed to make a 1 inch cube
    5·1 answer
  • For homework a student had to complete 15 problems total. If she finished 6 problems in class, what is the ratio of problems she
    10·2 answers
  • Write an equation for the line graphed.
    13·1 answer
  • Is anyone good at statistics
    9·1 answer
  • What is 50/6 as a mixed number
    6·2 answers
  • Mathias and his brother divided 2,030 marbles equally use compatible numbers to estimate how many marbles each brother received
    5·1 answer
  • Samantha is making cookies for her friends
    8·1 answer
  • Graph the line that represents a proportional relationship between y and x where the unit rate of change of y with respect x is
    10·1 answer
  • What is 2.987 as a percent
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!