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Elena L [17]
3 years ago
7

HELP PLS

Mathematics
1 answer:
Karolina [17]3 years ago
3 0

explain ggvfkdjdigzufsitz8tItst9zotzotxiys8tx

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What is the solution to this system of equations? 4x + 5y = 7
Nutka1998 [239]

Answer:

(-2, 3)

Step-by-step explanation:

4x + 5y = 7

3x - 2y = -12

Let's solve this by elimination. We want to eliminate one variable at a time. This means we need to multiply the equations to create a common multiple to cancel out a variable.

Let's work with y.

5y and -2y: For these values to cancel out, we need to multiply each term to create a common multiple.

2(4x + 5y = 7)

5(3x - 2y = -12)

Multiply.

8x + 10y = 14

15x - 10y = -60

Eliminate.

23x = -46

Divide both sides by 23.

x = -2

Now that we know x, let's plug it back into one of equations to find y.

4x + 5y = 7

4(-2) + 5y = 7

Multiply.

-8 + 5y = 7

Add.

5y = 15

Divide.

y = 3

Now we know x and y; let's plug both back into the equation we have not checked yet.

3x - 2y = -12

3(-2) - 2(3) = -12

Multiply.

-6 - 6 = -12

Subtract.

-12 = -12

Your solution is correct.

(-2, 3)

Hope this helps!

8 0
3 years ago
Thirty subtracted from four times a number is greater than the opposite of 10
Arada [10]


30-4x>-10 

Hope I helped

5 0
3 years ago
Yesterday you walked 1/3 mile .today you walked 1/2 mile. How far did you walk in those two days?
Makovka662 [10]
You walked 5/6 mile

1/3(x2)=2/6
1/2(x3)=3/6
5/6 mile
7 0
3 years ago
Read 2 more answers
Humberly has $24 and they want to buy at least 8 containers of yogurt. Yogurt is packaged in both large and small containers. La
yanalaym [24]

Answer:

Hence he will be 4 large containers and 4 small containers

Step-by-step explanation:

Given data

Let the number of small containers be x

and the number of large containers be y

x+y= 8---------1

also

2x+4y= 24-----2

the system of equation to solve the problem is

x+y= 8

2x+4y= 24

from 1

x=8-y

put this in 2

2(8-y)+4y= 24

16-2y+4y= 24

2y= 24-16

2y= 8

y= 8/2

y= 4

put y= 4 in 1

x+4=8

x= 8-4

x= 4

Hence he will be 4 large containers and 4 small containers

6 0
3 years ago
Type the price per unit in blanks a and b, and choose the best buy. Tomato juice, 48 oz. can for $2.49 would = cents per oz. Tom
Sphinxa [80]
For this case we have two options:
 Option A:
 Tomato juice, 48 oz. can for $ 2.49.
 The unit price is:
 (2.49) / (48) = 0.05 cents per oz.
 Option B:
 Tomato juice, 6-pack of 10 oz. cans for $ 3.99.
 The unit price is:
 (3.99) / (6 * 10) = 0.07 cents per oz.
 Answer:
 
The best buy would be:
 
Tomato juice, 48 oz. can for $ 2.49.
7 0
3 years ago
Read 2 more answers
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