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77julia77 [94]
3 years ago
9

If a rectangle has length x and width x-2, what is the perimeter of the rectangle in terms of x?​

Mathematics
1 answer:
ivolga24 [154]3 years ago
6 0

Answer:

length x and width x-2

perimeter of rectangle=2[l+b]=2[(x-2)+x]=4x-4 is your answer

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What is 9 + 2x = -x + 3
Sidana [21]

Answer:

x=-2

Step-by-step explanation:

3 0
3 years ago
A stadium has 55,000 seats. Seats sell for ​$28 in Section​ A, ​$16 in Section​ B, and ​$12 in Section C. The number of seats in
salantis [7]
A=number of seats in section A
B=number of seats in section B
C=number of seats in section C

We can suggest this system of equations:

A+B+C=55,000
A=B+C                                      ⇒A-B-C=0
28A+16B+12C=1,158,000

We solve this system of equations by Gauss Method.

1             1              1               55,000
1            -1            -1                         0
28         16           12          1,158,000 


1             1              1               55,000
0            -2             -2             -55,000                                    (R₂-R₁)
0           12             16           382,000                                    (28R₁-R₂) 


1            1                1              55,000
0           -2              -2             -55,000
0            0                4               52,000                                     (6R₂+R₃)

Therefore:

4C=52,000
C=52,000/4
C=13,000


-2B-2(13,000)=-55,000
-2B-26,000=-55,000
-2B=-55,000+26,000
-2B=-29,000
B=-29,000 / -2
B=14,500.

A + 14,500+13,000=55,000
A+27,500=55,000
A=55,000-27,500
A=27,500.

Answer: there are 27,500 seats in section A, 14,500 seats in section B and 13,000 seats in section C.
3 0
3 years ago
if someone buys an orange for 27pounds and that person pays with 1 pound how much does that person get back
Darya [45]

Answer:

-26 pounds

Step-by-step explanation:

if something coasts 27 pounds and you give them 1 pound

27-1=26 you're short 26 pounds

therefore the answer is -26

3 0
3 years ago
Someone please help me on this and actually answer I’m so confused and need help lots of points
just olya [345]

Answer:

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5 0
2 years ago
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1/3 ( 3x + 9 ) = 5 - 3 ( x - 2 )
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