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FromTheMoon [43]
3 years ago
9

Solve for x 2(3x + 7) = 5 + 6x

Mathematics
1 answer:
Ira Lisetskai [31]3 years ago
3 0

Answer:

x = − 4 − √ 466 , − 4 + √ 46   6   Decimal Form:   x  =  0.46372166 … ,   − 1.79705499 …

Step-by-step explanation:

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Is y=2x+7 a function? <br> Yes or no
Kipish [7]

Answer:

YES

Step-by-step explanation:

It is because the domain doesn't repeat.

There are no multiple outcomes for one domain.

8 0
2 years ago
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A cleaning company charges x dollars per hour to clean floors and y dollars per hour to clean the rest of the house
Nina [5.8K]

Answer:

(15,18)

Step-by-step explanation:

write two equations with the information provided.

2x + 3y = 84

x + 4y = 87

use the property of substitution to answer.

x + 4y = 87,   x = 87 - 4y

2(87 - 4y) + 3y = 84

174 - 8y + 3y = 84

174 - 84 = 8y - 3y

90 = 5y

90/5 = y

y = 18

Add the value of Y to an original equation. Solve for X

2x + 3(18) = 84

2x + 54 = 84

2x = 84 - 54

2x = 30

x = 30/2

x = 15

8 0
3 years ago
On a coordinate plane, a line with a 90-degree angle crosses the y-axis at (0, 1), the x-axis at (1, 0), turns at (3, negative 2
soldi70 [24.7K]

Answer: 2

Step-by-step explanation: I did the test

8 0
3 years ago
How many sticks would be in pattern n
S_A_V [24]

Answer:

Depending on the equation it will change

n=1 (not in an equation)

Step-by-step explanation:

Pls mark BRAINLIEST

5 0
2 years ago
Luke invited 20 more boys than girls to his birthday party. However, only ¾ of the boys and ⅔ of the girls came. Exactly 19 of L
sveta [45]

Answer:

68

Step-by-step explanation:

Let:

Number of girls invited = x

Number of boys = x +20

3/4 of boy showed up

2/3 of girls showed up

Exactly 19 did not show up

Therefore, we could say:

Fraction of boys that didn't show up = 1 - 3/4 = 1/4

Fraction of girls that didn't show up = 1 - 2/3 = 1/3

That is,

[1/4 *(x + 20)] + [1/3*x] = 19

[(x + 20) / 4] + x /3 = 19

(3(x + 20) + 4x) / 12 = 19

3x + 60 + 4x = 228

7x = 228 - 60

7x = 168

x = 168 / 7

x = 24

Number of girls, x = 24

Number of boys, x + 20 = 24 + 20 = 44

Total friends invited = (24 + 44) = 68

8 0
3 years ago
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