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sdas [7]
3 years ago
9

Which of the following expressions is not equivalent to 6x-18y+30

Mathematics
1 answer:
Dennis_Churaev [7]3 years ago
3 0
The answer is 3(2x-6y+30) the expression is not equivalent to 6x-18y+30
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I NEED HELP IDENTIFYING THE SLOPE PLEASE !!! Pic attatched !!!!
Alexus [3.1K]

Answer:

see explanation

Step-by-step explanation:

Calculate the slope m using the slope formula

m = (y₂ - y₁ ) / (x₂ - x₁ )

with (x₁, y₁ ) = 2,4 ) and (x₂, y₂ ) = (5, 1)

m = \frac{1-4}{5-2}  = \frac{-3}{3} = - 1 ← negative slope

Repeat

with (x₁, y₁ ) = - 7,8) and (x₂, y₂ ) = (- 7, 0)

m = \frac{0-8}{-7+7} = \frac{-8}{0}

Division by zero is undefined, thus slope is undefined.

Repeat with

(x₁, y₁ ) = (6, - 3) and (x₂, y₂ ) = (- 4, - 3)

m = \frac{-3+3}{-4-6} = \frac{0}{-10} = 0 ← zero slope

Repeat with

(x₁, y₁ ) = (3, 5) and (x₂, y₂ ) = (- 1, 2)

m = \frac{2-5}{-1-3} = \frac{-3}{-4} = \frac{3}{4} ← positive slope

7 0
2 years ago
The numbers 2-12 are written on cards and placed in the bag.what is the probability of picking an even number then replacing it
weeeeeb [17]

2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12

There are 11 numbers on cards.

6 cards contain even numbers.

Answer: p(even) = 6/11

There is only one card with a 7. After the first card is picked and returned, there are 11 cards in the bag again.

p(even then 7) = p(even) * p(7) = 6/11 * 1/11 = 6/121

Answer: p(even then 7) = 6/121

4 0
3 years ago
Amy can mop the store in 30 minutes. James can mop the store in 45 minutes. How long would it take them if they worked together?
zavuch27 [327]
Solve the equation 1/30 + 1/45 = 1/x  

where x is the required time

multiply thru by 90x:-

3x + 2x  = 90

x = 90 / 5 = 18

answer 18 minutes
5 0
3 years ago
4. One can of spray paint can be used to create a line that is 240 feet long. How many cans of spray paint are needed to draw 40
Xelga [282]

Answer:

1.66 cans or 1.6 rounded.

Step-by-step explanation:

1 can = 240ft

2 cans = 480ft

480 divided by 240 = 1.66666666667.

Rounded number = 1.66 and or 1.6

7 0
2 years ago
Recursive Formula? I don't understand this
AleksAgata [21]
Recursive Formula? I don't understand this
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3 years ago
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