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3 years ago

Do 2 and 3, please. show all your work

Mathematics

2 answers:

andreyandreev [35.5K]3 years ago

4 0

The answer is b and c

nignag [31]3 years ago

3 0

The answer would be b and c

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(4x 2 − 2x + 10) + (−2x 2 + 4x − 2)

Mariulka [41]

Answer:

2x²+2x+8

Step-by-step explanation:

4x²-2x+10-2x²+4x-2

=4x²-2x²-2x+4x+10-2

=2x²+2x+8

6 0

3 years ago

There are nine squares in a 3 x 3 square grid. Four of them will be painted white, how many will be painted black?

amid [387]

Answer:

5 squares will be painted black.

Step-by-step explanation:

There are 9 squares, and 4 of them will be painted white, so that means that the remaining squares will be painted black. 9-4=5, so 5 squares will be painted black.

Hope this helped! :)

5 0

3 years ago

the scale on a map is stated as 1:250000 two villages are 9 cm apart on the map how far from each other are the two villages in

Karolina [17]

Answer:

22.5 kilometers

Step-by-step explanation:

we know that

The scale drawing is

$1:250,000$

That means

1 unit on a map represent 250,000 units in the actual

1 cm on a map represent 250,000 cm in the actual

1 cm on a map represent 2,500 m in the actual

1 cm on a map represent 2,5 km in the actual

therefore

using proportion

Find out how much represent 9 cm apart on the map

$\frac{1}{2.5}\ \frac{cm}{km}=\frac{9}{x}\ \frac{cm}{km}\\\\x=9(2.5)\\\\x=22.5\ km$

7 0

3 years ago

HELPPPPPPPPPPPPPPPPPPPPPPPPPPPPP MMMMMMMMMMMMMMMMEEEEEEEEEEEEEEEE

Fudgin [204]

Y=2x+1 I think this is correct but I don’t know how to do equations very well

3 0

3 years ago

PLEASE HELP ASAP!! (NO LINKS)

Keith_Richards [23]

No it isn’t. it works for the first equation but not the second

7 0

3 years ago