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gtnhenbr [62]
2 years ago
11

Please answer fast !!!

Mathematics
1 answer:
Rina8888 [55]2 years ago
4 0
The right answer is B
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The area of a bulletin board is 55 ft2. The length is nine feet less than four times the width. Find the length and the width, i
galben [10]

Answer:

The length and width are 11ft and 5ft respectively

Step-by-step explanation:

let the

length = L

Width = W

Area = LW = 55

The length is nine feet less than four times the width

L = 4W - 9

W (4W - 9) = 55

4W^2 - 9W -55 = 0

4W^2 - 20W + 11W - 55 = 0

4W(W - 5) + 11(W - 5) = 0

(W - 5)(4W + 11) = 0

W - 5 = 0 , 4W + 11=0

W = 5 or  - 11/4

since the width cannot be negative, W = 5

LW = 55

L = 55/5

L = 11

The length and width are 11ft and 5ft respectively.

7 0
3 years ago
F(x)=2x+1; g(x)=3x-2 <br><br> find (f+g) (3)
baherus [9]

Step-by-step explanation:

GIVEN,

f(x)=2x+1; g(x)=3x-2

NOW,

( 2x+1 + 3x-2)×3

=(5x-2)×3

=15x - 6 <em>A</em><em>N</em><em>S</em><em>W</em><em>E</em><em>R</em>

3 0
3 years ago
If the side length of a cube is 40 what is the surface area
Elodia [21]
A cube has 6 sides.

A cube is all made up of squares.

So, we need to find the area of one cube and multiply that by 6.

Length * width= area

40*40= 1,600

Multiply that by 6.

1,600*6= 9600

Whatever the unit is after that: in, feet, cm, m, etc- put that after the number with ^2.

9,600 (the unit) ^2

I hope this helps!
~kaikers
7 0
2 years ago
in one particular suburb slacks have been reduced to $36. This price is at 90% of the original price for slacks. Given this what
frez [133]
$40
40*90/100 = 36
You just have to be careful with the rest of the problem
7 0
2 years ago
PLZ HELP WILL MARK BRANLIEST (No dum answers or I will delete your question - seriously don't be annoying)
Vsevolod [243]

Answer:

A. tan(2π/3) = -\sqrt{3}

4 0
2 years ago
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