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Harrizon [31]
2 years ago
7

I gotta stop using this websites( i need help)

Mathematics
1 answer:
erastovalidia [21]2 years ago
7 0

Answer:

V:100.8

SA:111

Step-by-step explanation:

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Can someone solve this for me? Common factor first! Thank you.
USPshnik [31]

Answer:

5 {(x - 4)}^{2}

Step-by-step explanation:

5 {x}^{2}  - 40x + 80 \\  =5( {x}^{2} - 8x + 16) \\  = 5 ( {x}^{2}   - 8x +  {4}^{2}  ) \\  = 5 {(x - 4)}^{2}

5 0
3 years ago
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What is the solution to the system of equations below? Y=-4/5x-6 & y=-30
Ainat [17]
So when you are trying to find the solution to the system of equations make sure that you have it where y= -4/5x-6 and y= -30 are written like this:

-30=-4/5x-6

And then solve for x:

Add 6 on both sides. 

-24=-4/5x

Then multiply by the reciprocal of -4/5.

-5/4*-24=-5/4*-4/5x

x=30 

But then you are gonna want to plug 30 in for x in y=-4/5x-6 to make sure that it is the same as y=-30.
5 0
3 years ago
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Karen collects 6/7 quart of rainwater. She uses 1/2 of the water to clean her bicycle and uses the remaining water equally for 3
quester [9]
Water collected - 6/7
Water used for cleaning bicycle = 1/2 × 6/7 = 6/14
Water used for each houseplant =>6/14 ÷ 3 = 2/14 = 1/7
3 0
2 years ago
What is the sum of the solutions to (x − 6)(x + 0.7) = 0 ?
Nonamiya [84]

Answer:

5.3

Step-by-step explanation:

(x − 6)(x + 0.7) = 0

using the zero product property

x-6=0   x+.7 =0

x-6+6 = 0+6       x+.7 -.7 = 0-.7

x = 6                   x= -.7

sum of the solutions

6+-.7 = 5.3

5 0
3 years ago
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Circle theorem - easy work
makvit [3.9K]
Angle in a semi circle is 90°
<a = 180-90-<b = 90-28 = 62°

opposite angles of a cyclic quadrilateral sums up to 180°
<b + <a = 180
<b = 180-62
<b = 118°
8 0
3 years ago
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