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
Leya [2.2K]
3 years ago
7

What is R+G=20 7R+3G=9

Mathematics
1 answer:
Troyanec [42]3 years ago
4 0

Step-by-step explanation:

hope I understand your qyestion

Equation 1 : R+G=20

Equation 2 : 7R+3G=9

Multiply Equation by 3, it becomes

3R+3G=60 ...... Equation 3

Now Equation 3 minus Equation 2

-4R = 51

R = - 51/4

Sub R into Equation 1, you can find G

You might be interested in
When placed in the box below, what expression will complete an example of the commutative property of addition 7(2+9)= ?
ANEK [815]

The expression for 7(2+9) IS A(B+C) which is distributive property of addition over multiplication.

Only two arithmetic procedures are subject to the commutative property: Multiplication and Addition

 A + B = B + A Which is Commutative property of addition

A.B = B.A, which is a commutative property of multiplication.

Distributive property is A(B+C) =AB+AC

The operation on numbers that are available in brackets can be distributed for each number outside the bracket, according to the distributive property. It is one of the mathematical properties that is used the most. Commutative and associative qualities are the other two important features.

from the given data 7(2+9) =7*2+7*9

                                                =14+63

                                                =77

Now, we can clear that 7(2+9) =7(9+2)

Hence, the expression for commutative property of addition is A(B+C) = AB+AC.

To learn more about commutative property, visit

brainly.com/question/28387735

#SPJ1

6 0
1 year ago
7th grade math help me plzzzz
siniylev [52]

Answer:

17 degrees

Step-by-step explanation:

So to find the answer you need to subtract. If the temp went down 22.1 degrees and it is -5.1 degrees you will subtract 22.1 - 5.1. This equals 17 degrees. You know the answer is correct because you can check your answer by adding: 5.1 + 17 = 22.1. We are disregarding the negative sign.

6 0
3 years ago
62 in x 48 in 144 in Set Up Proportion height=​
JulijaS [17]

Answer:

A geometric diagram of the two shadows and the height of the two people are shown below.

Step-by-step explanation:

5 0
3 years ago
Hi! The question is in the is in the picture :) (worth 50 points)
Reika [66]

Answer:

53.2

Step-by-step explanation:

5 0
2 years ago
An adult ticket to a school play cost $5 and a student ticket cost $3. $460 dollars was collected and 120 tickets were sold. How
inn [45]
5x + 3y = 460
5(x + y = 120)
5x + 5y = 600
Use elimination subtraction
-2y = -140
y = 70
There are 70 student tickets
3 0
3 years ago
Other questions:
  • Question #1)
    15·2 answers
  • Which graph has an amplitude of 1/2?
    12·1 answer
  • Which equation does NOT represent direct variation? A. Y=x/21 B. y/x=5/8 C. y-3= 3x D. y-5x=0
    13·2 answers
  • What is the largest two-digit prime number
    15·2 answers
  • there are 12 students working in the library if 3/4 of them are girls how many girls are working in the library
    14·2 answers
  • Which is the graph of y=|x|-2?
    8·1 answer
  • Solve the given initial-value problem.
    5·1 answer
  • from 2000 to 2010, the population of Florida increased by 23.5%. the population in 2000 was 15,982,378
    13·1 answer
  • Your middle school is having a carnival. Admission into the carnival is $8, and each game inside the carnival costs $0.50.
    14·1 answer
  • Anyone else failing everything and feel like dyin
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!