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
alukav5142 [94]
2 years ago
8

Use substitution to solve the following system of equations. -2x + 4y = -18 AND x = y + 3

Mathematics
2 answers:
Annette [7]2 years ago
5 0

Answer:

x = -3    y = -6

Step-by-step explanation:

x = y + 3

x - 3 = y

-2x + 4(x - 3) = -18

-2x + 4x - 12 = -18

2x = -6

x = -3

x = y + 3

-3 = y + 3

-6 = y

loris [4]2 years ago
4 0

Answer:

x = -3 ; y = -6

Step-by-step explanation:

x = y + 3

-2x + 4y = -18

-2(y+3) + 4y = -18

-2y -6 + 4y = -18

2y = -12

y = -6

x = -6+3

x = -3

You might be interested in
Look at the question
ziro4ka [17]

Answer:

Step-by-step explanation:

The better buy is the one where you get more area of pizza per dollar (area/price).

Since the problem gives diameter, we assume the pizzas are circle-shaped.

Circle Area = pi x (radius)², and radius r = 1/2 of diameter d.

*************************************************************************************

Pizza 1: d = 8 and price is $10

r = 1/2 x d = 4

Area of Pizza 1 = πr² = π(4)² = 16π

*** area/price for Pizza 1 = 16π/$10 = 1.6π area per dollar

**********************************************************************************

Pizza 2: d = 14 and price is $16

r = 1/2 x d = 7

Area of Pizza 2 = πr² = π(7)² = 49π

*** area/price for Pizza 2 = 49π/16 = 3.0625π area per dollar

***********************************************************************************

Pizza 2 is the better buy, with more pizza per dollar.

3 0
3 years ago
Find the area of the trapezoid.​
Lemur [1.5K]

Answer:

448

Step-by-step explanation:

A=((a+b)/2) h=(17+39)/2·16=448

8 0
2 years ago
Can someone answer these questions and explain the reasoning?
marishachu [46]

Answer:

idk number 6

Step-by-step explanation:

I hope this is what you need

7 0
3 years ago
10% off the original price the original price is $52 what is the sale price
lbvjy [14]
$520. I think it is since 52 is 10% of 520. Hope this helps
5 0
3 years ago
Plz do my worksheet plz
d1i1m1o1n [39]

Answer:

I think numder 2 is vertices

3 0
2 years ago
Read 2 more answers
Other questions:
  • Liliana used 444 dark power crystals to raise 141414 zombie soldiers. She wants to know how many zombie soldiers (z)(z)left pare
    10·1 answer
  • The times for three swimmers are 101.85 seconds, 101.6 seconds, and 59.625 seconds. Which is the winning time?
    8·2 answers
  • Which equation is written in slope-intercept form?
    9·1 answer
  • Plis help with this. - - -
    8·1 answer
  • Ms Lucas has 9 cases of crayon with 52 boxes in each case Ms Bruns has 6 cases of crayon with a 104 in each case How many boxes
    8·1 answer
  • PLEASE HELP!!!!!!!!!!!
    8·1 answer
  • Solve.<br> HELPPP PLEASEEE
    14·2 answers
  • Angle measures and segment lengths. Algebra Find the value of each variable.
    8·1 answer
  • Sixth grade mathematics
    5·1 answer
  • Which graph best represents a function with a range of all real numbers greater than or equal to 3
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!