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
WITCHER [35]
3 years ago
5

rmula1" title="\left \{ {{50x-2y=230} \atop {50x-3y=170} \right." alt="\left \{ {{50x-2y=230} \atop {50x-3y=170} \right." align="absmiddle" class="latex-formula">


combination method
Mathematics
1 answer:
grin007 [14]3 years ago
5 0

Answer:

x = 7, y = 60

Step-by-step explanation:

Given the 2 equations

50x - 2y = 230 → (1)

50x - 3y = 170 → (2)

Subtract (2) from (1) term by term on both sides

y = 60

Substitute y = 60 into either of the 2 equations and evaluate for x

Substituting into (1)

50x - 2(60) = 230

50x - 120 = 230 ( add 120 to both sides )

50x = 350 ( divide both sides by 50 )

x = 7

You might be interested in
I need the answer to these two problems​
dangina [55]

Answer:

the price of one shirt increases from 10 to 15

so c hope it helped

Step-by-step explanation:

6 0
3 years ago
A mini game cube is covered in different colors and has a side length of 1.8 inches. Which of the following would represent the
svet-max [94.6K]

complete question:

A mini game cube is covered in different  colors and has a side length of 1.8 inches.  Which of the following would represent the  amount of space covered in various colors?

A. 116.64 in2

B. 3.24 in2

C. 19.44 in2

D. 10.8 in2

Answer:

C. 19.44 in2

Step-by-step explanation:

A cube is a 3 dimensional figure bounded by 6 square faces. All the sides of a cube are equal in length. The picture below is a cube. The amount of space covered in different colors will be the surface area of the cube.

surface area = 6L²

where

L = length

L = 1.8 inches

surface area =  6 × 1.8²

surface area  = 6 × 3.24

surface area = 19.44 inches²

7 0
3 years ago
How many different triangles ABC can be formed if C=60∘, c=17√3 and a=34?
Lunna [17]

Answer:

Jordan, Its been 5 hours, whats the answer?

Step-by-step explanation:

7 0
2 years ago
El Rodeo School has 837 students. El Rodeo School has 78 more students than Hawthorne. How many students are there at Hawthorne
natita [175]
H=#of students at  hawthorne 
equation =\frac{c}{8}=2.25
c=$18
6 0
3 years ago
Shae is covering 3 walls in her bedroom with wallpaper. The measurement of each wall is 12 ft x 14 ft. A roll of wallpaper cover
Vedmedyk [2.9K]
Each wall measures 12 ft * 14 ft.
Area of one wall = LW = 12 ft * 14 ft = 168 ft^2
Area of 3 walls = 3 * area of 1 wall = 3 * 168 ft^2 = 504 ft^2

One roll of wall paper covers 42 ft^2.
To find out how many rolls are needed,
divide the total area by the area of one roll.

(504 ft^2)/(42 ft^2) = 12

Answer: Shae should purchase 12 rolls.
5 0
3 years ago
Other questions:
  • If repetition is not allowed, how many 4 letter codes can be formed from only 5 letters of the alphabet?
    15·1 answer
  • What question is answered by the equation d=4 (32)
    7·1 answer
  • What is 4(2x+25)=20???
    14·2 answers
  • What is the value and digits of 1.639
    13·1 answer
  • One hundred times the quantity five plus three
    7·1 answer
  • The following pie chart represents how many absences the students of Washington Middle School had during the first quarter. What
    9·1 answer
  • The measurements of 11 fish caught during an angling competition are recorded.
    9·1 answer
  • In triangle $XYZ,$ $\angle Y = 45^\circ$ and $\angle Z = 60^\circ.$ If $XZ = 4,$ then what is $XY$?
    10·2 answers
  • Brian asked a group of people their favourite holiday destination.
    8·1 answer
  • An office store pays a whole price of $120 for a laser printer and sells it for $174. What is the pecent mark up
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!