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iragen [17]
3 years ago
15

Add the two expressions. 2n−3 and −7n+2

Mathematics
2 answers:
Jet001 [13]3 years ago
8 0
Well, we're not trying to find n, necessarily, simply add the two expressions, right? So let's get the like terms together:

(2n - 7n) + (-3 + 2)

And then add to get -5n - 1
Sedaia [141]3 years ago
4 0
I think -5n-1 but i may be wrong
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ss7ja [257]
The answer would be (6,-3)
6 0
3 years ago
Read 2 more answers
The length of a rectangle is 5ft longer than twice the width if the perimeter is 58 ft find the length and width of the rectangl
Travka [436]
----------------------------------
Define x :
----------------------------------
Let the width be x.
Width = x
Length = 2x + 5                // Length is 5ft longer than twice the width

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Formula for Perimeter :
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Perimeter = 2 (Length + Width)

----------------------------------
Find Width :
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58 = 2 ( 2x + 5 + x)         // Substitute Length and Width into formula
58 = 2 (3x + 5)                // Combine like terms
58 = 6x + 10                    // Apply distributive property
48 = 6x                            // Take away 10 from both sides
6x = 48                            // Switch sides. Make x the subject
x = 8                                // Divide by 6 on both sides

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Find Length and Width :
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Width = x = 8 ft
Length = 2x + 5 = 2(8) + 5 = 21 ft

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Answer: The length is 21 ft and the width is 8 ft.
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3 0
2 years ago
Read 2 more answers
Help me please <br> And good morning
konstantin123 [22]

Answer:

It should be -8

Step-by-step explanation:

5 0
2 years ago
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Unitary method A car can cover a distance of 522km on 36litres of disesel. How far can it travel with 14litres, ​
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Answer:

It can cover 203 km with 14 litres.

Step-by-step explanation:

Given that,

A car can cover a distance of 522km on 36litres of diesel.

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We can use the unitary method to solve it.

14\ L=\dfrac{522}{36}\times 14\\\\=203\ km

So, it can cover 203 km with 14 litres.

7 0
3 years ago
Degree 4; zeros: -3+2i; 2 multiplicity 2
enot [183]

Answer:

±4i, ±3

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Step-by-step explanation:

±4i, ±3

p(x) = A(x - 4i)(x + 4i)(x - 3)(x + 3), with A = 1.

8 0
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