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AfilCa [17]
2 years ago
7

HURRY!!!!!

Mathematics
2 answers:
DerKrebs [107]2 years ago
7 0

Answer:

The answer is 17.5

Step-by-step explanation:

if you divide 17.5 / 5 it will equal the same number as dividing 7 / 2 so 17.5 / 5 = 3.5

belka [17]2 years ago
4 0

Answer:

y=10

Step-by-step explanation:

what ever x='s you add 5 and what ever y='s you subtract 5

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Step-by-step explanation:

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7 0
3 years ago
Look at this system of equations.<br> 4x+3y=33<br> 2x+3y=21<br> What is the value of x+y?
Maurinko [17]

Answer:

x = 6

y = 3

x + y = 9

Step-by-step explanation:

(Step 1)

Isolate one of the variables in one of the equations. This will allow you to solve by substitution in the following steps.

2x + 3y = 21                             <----- Original equation

3y = -2x + 21                            <----- Subtract 2x from both sides

y = (-2/3)x + 7                          <----- Divide all terms by 3

(Step 2)

Substitute the new equation into the untouched equation and isolate the "x" variable.

4x + 3y = 33                                 <----- Original equation

4x + 3((-2/3)x + 7) = 33                <------ Substitute manipulated equation

4x - 2x + 21 = 33                          <------ Multiply 3 by terms in parentheses

2x + 21 = 33                                 <------ Subtract terms with variables

2x = 12                                         <----- Subtract 21 from both sides

x = 6                                             <----- Divide both sides by 2

(Step 3)

Plug the value of "x" into one of the equations to find the value of "y".

4x + 3y = 33                               <----- Original equation

4(6) + 3y = 33                             <----- Plug 6 in for "x"

24 + 3y = 33                               <----- Multiply

3y = 9                                         <----- Subtract 24 from both sides

y = 3                                           <----- Divide both sides by 3

(Step 4)

Since you now know the value of both variables, you can add them together to find your final answer.

x = 6

y = 3

x + y = ?

6 + 3 = ?

9 = ?

3 0
2 years ago
A certain shade of paint is made by mixing 3/4 quarts red with quarts yellow. How much red and yellow paint would you need if yo
Scorpion4ik [409]
9 quarts of red and 3 quarts of yellow. do 3/4 times 12 and 1/4 times 12
4 0
3 years ago
Solve for I when 3/5 +I-1/15
Ugo [173]

Answer:

23 over 15 or 1.533

Step-by-step explanation:

Group like terms:

1+(3/5+-1/15)

Find LCD:

1+9/15+-1/15

Combine numerators:

15/15+8/15

And you get 23/15

Simplified:1 8/15

Decimal: 1.533

4 0
2 years ago
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