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Maksim231197 [3]
3 years ago
14

I need help with #2 please I don’t understand

Mathematics
2 answers:
Gekata [30.6K]3 years ago
7 0
#3 you got all wrong
You need to using the distribute property to multiply
a) 7(2x+3) = 14x + 21
b) 5(x - 3) = 5x - 15
c) 3(3x + y) = 9x + 3y
d) 4(2x + 3y) = 8x + 12y


kipiarov [429]3 years ago
6 0
1. Square 
2. Circle
3. Triangle (inside of a square) 
4. Pentagon
5. Rectangle

Hope this helps :)
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Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.
Alexandra [31]
37x + 45y = 7940
75x + 45y = 10,410

Since 45y is in both equations we can more easily transfer from first equation to 2nd equation.

In the first equation, subtract 37x from each side and you have 45y = 7940 - 37x. Replace the 45y in the second equation with (7940 - 37x).

Now you have 75x + (7940 - 37x) = 10,410

Simplify by combining 75x - 37x and you have 38x + 7940 = 10,410

Subtract 7940 from both sides and you have 38x = 2470.

Divide both sides by 38 and you have x = 65

To solve for y, take you first equation (or even the second one) and substitute c for 65.

(37 x 65) + 45y = 7940
2405 + 45y = 7940

Subtract 2405 from each side.

45y = 5535

Divide each side by 45 and you have y = 123

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2 years ago
What is the solution for the system of equations {9x+8y=3 6x−12y=−11?
lions [1.4K]

Answer:

( - \frac{1}{3}, \frac{3}{4} )

Step-by-step explanation:

Given the 2 equations

9x + 8y = 3 → (1)

6x - 12y = - 11 → (2)

To eliminate the y- term multiply (1) by 1.5

13.5x + 12y = 4.5 → (3)

Add (2) and (3) term by term

(6x + 13.5x) + (- 12y + 12y) = (- 11 + 4.5)

19.5x = - 6.5 ( divide both sides by 19.5 )

x = \frac{-6.5}{19.5} = - \frac{1}{3}

Substitute this value into either of the 2 equations and solve for y

Using (1), then

- 3 + 8y = 3 ( add 3 to both sides )

8y = 6 ( divide both sides by 8 )

y = \frac{6}{8} = \frac{3}{4}

Solution is (- \frac{1}{3}, \frac{3}{4} )

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Kisachek [45]
Answer is: 60x=240
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Answer:

I'm here for that the guy who has answer this is correct

Step-by-step explanation:

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2 years ago
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Step-by-step explanation:

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