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lianna [129]
3 years ago
9

Solve the equation. 4d + 2d – 4d + 4 = 3d

Mathematics
2 answers:
Alex777 [14]3 years ago
8 0
4d+2d-4d+4=3d
2d+4=3d
4=3d-2d
d=4
andreyandreev [35.5K]3 years ago
4 0

add like tersms

remember you can do anything to an equaitona s longas  you do it to both sides


4d+2d-4d+4=3d

6d-4d+4=3d

2d+4=3d

add negative 2d to both sides

2d-2d+4=3d-2d

0+4=1d

4=d

d=4

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Step 1

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3 years ago
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Nimfa-mama [501]

The given expression is :

2xx+3-5(x-2)

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Aleena expands 2xx+3-5(x-2) as 2x²+3-5x-10. She is mistaken because the sign before 10 should be +10 instead of -10. Hence, the correct expanded form is 2x²+3-5x+10. Hence, this is the required solution.

5 0
2 years ago
About 70,000 people live in a 6-mile radius of a city's town hall. Find the population density in people per square mile. Round
nika2105 [10]

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The distance between (-5, 3) and B(5, 3) is
8090 [49]
In here, we will use the distance formula
\sqrt{\left(x_2-x_1\right)^2+\left(y_2-y_1\right)^2}

Compute the distance between <span>(-5, 3) and (5, 3)
</span>=\sqrt{\left(5-\left(-5\right)\right)^2+\left(3-3\right)^2}
<span>
= 10 

The distance between </span>(-5, 3) and (5, 3) is 10 
8 0
3 years ago
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