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
Nookie1986 [14]
3 years ago
11

(08.03)

Mathematics
1 answer:
VMariaS [17]3 years ago
8 0

Answer:

rearrange them properly to get

x-y=7

-3x+y=12

( by elimination method)

x-y = 7

-3x+y=

(x+ –3x) + (–y+y) = (7+12)

-2x+0= 19

x= -9.5

from eqn(i)

x-y=7

-9.5 - y=7

-y=16.5

y= -16.5

You might be interested in
A law firm is going to designate associates and partners to a big new case. The daily rate charged to the client for each associ
Ronch [10]

Answer:

The system of equations representing the situation are

600a+1200p = 15,000

a+p = 16

with solutions

p =9

a = 7

Step-by-step explanation:

Let us call a the number of associates and p the number of partners. If each associate costs $600 and each partner costs $1200, and it cost the law firm a total of $15,000, then we have

600a+1200p = 15,000.

Since the law firm assigned at total of 16 lawyers, we have

a+p = 16.

Thus, the system of equations representing the situation are

600a+1200p = 15,000

a+p = 16

And the solution to this system is found by solving for a in the second equation and substituting its value in the first equation:

a = 16-p

600(16-p)+1200p = 15,000

9600-600p+1200p=15,000

9600+600p=15,000

600p=5400

\boxed{ p=9}

We put this value into a+p = 16 and solve for a:

a+9=16

\boxed{a = 7}

4 0
3 years ago
A chemical company makes two brands of antifreeze. The first brand is 20% pure antifreeze, and the second brand is 45% pure anti
Hoochie [10]

The gallons of the first brand of antifreeze should be 60 gallons.

The gallons of the second brand of antifreeze should be 90 gallons.

<h3>What are the linear equations that represent the question?</h3>

0.2f + 0.45s = 52.50 (0.35 x 150) equation 1

f + s = 150  equation 2

Where:

  • f = gallons of the first antifreeze
  • s =  gallons of the second antifreeze

how many gallons of each brand of antifreeze must be used?

Multiply equation 2 by 0.2

0.2f + 0.2s = 30 equation 3

Subtract equation 3 from equation 2

0.25s = 22.50

s = 22.50 / 0.25

s = 90

f = 150 - 90 = 60 gallons

To learn more about linear functions, please check: brainly.com/question/26434260

#SPJ1

4 0
2 years ago
1 millimeter on the map represents 1 meter on the ground. What is the ratio
qwelly [4]
1mm:1m

since its just one to one, thats the ratio 
3 0
3 years ago
The rest of the page help please !!
GalinKa [24]
2.333<span> =2 1/3 
</span><span>0.8333=<span>5/6
A is like toats larger but feel to bored to explain it 
A becaus eit does not give fraction always change to fractions</span></span>
6 0
3 years ago
How many variable terms are in the expression 3x3y + 5x2 − 4y + z + 9? (Input a numeric value only.)
Anarel [89]

Answer:

4

Step-by-step explanation:

A variable term is a mathematical term in which a variable is by itself or is connected to a coefficient(s).

3x3y, 5x2, −4y, z.

7 0
2 years ago
Other questions:
  • Solve by completing the square: x^2-10x+8=0
    5·2 answers
  • Eight times a number minus twenty-seven is no more than the negative of that number plus eighteen
    15·2 answers
  • Does a equation only produces 1 solution
    12·1 answer
  • How do you add fractions?
    15·1 answer
  • <img src="https://tex.z-dn.net/?f=%20%5Csqrt%7Bx%20%2B%203%7D%20" id="TexFormula1" title=" \sqrt{x + 3} " alt=" \sqrt{x + 3} " a
    9·2 answers
  • *URGENT* PLEASE HELP
    7·1 answer
  • The population of Mathlandia in 1995 was 23,473 and was projected to grow at a rate of 12% per decade. Predict the population in
    14·1 answer
  • (6.31 times 10^5)+(2.6 times 19^4)
    10·1 answer
  • 11. Use matrices to solve the system of equations below. Be sure to show [A] and [B].
    6·1 answer
  • How many solutions does the following equation have?
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!