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zhuklara [117]
3 years ago
12

(Can Someone PLEASE Help me) Which of the following steps in this proof contains a flaw?

Mathematics
1 answer:
Vladimir79 [104]3 years ago
7 0
Step 3. It lost track of one power of a on the left side. 

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The perimeter of a rectangle is 20 inches.The length is 2 inches less than twice the width.
SSSSS [86.1K]

Answer:

width = 6

length = 4

Step-by-step explanation:

perimeter = 2L + 2W

L = W - 2

plug in perimeter:

20 = 2L + 2W

you know the length is 2 less than the width

plug in (w - 2) for L:

20 = 2(w - 2) + 2w

solve for w:

20 = 2w - 4 + 2w

20 = 4w - 4

4w = 24

w = 6

now plug in 6 for w in either equation, whichever is easier to solve:

L = 6 - 2

L = 4

width = 6

length = 4

6 0
4 years ago
Use substitution to solve each system of equations <br> X=y-2<br> 4x+y=2
Mariulka [41]

Answer:

Step-by-step explanation:

x = y - 2.........(1)

4x + y = 2......(2)

Substituting x in (1) in (2)

4(y - 2) + y = 2

4y - 8 + y = 2

5y = 2 + 8

5y = 10

y = 10/5

y = 2

Putting x in (1)

x = y - 2

x = 2 - 2

x = 0

6 0
3 years ago
Need answer urgently.
Feliz [49]
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4 0
3 years ago
Find the zero of f(x) = x^5-12x^2+32x
Alexeev081 [22]
The zeroes of <span>f(x) = x^5-12x^2+32x can be found by factoring,

</span><span>f(x) = x^5-12x^2+32x=(x-8)(x-4)

By the zero product theorem, (x-8)=0 or (x-4)=0 which means 
x=8 or x=4.

So the zeroes of f(x) are S={4,8}</span>
8 0
3 years ago
Jenny is saving money to buy a game. So far she has saved $12, which is one-fourth of the total cost of the game. How much does
7nadin3 [17]

Answer:

1/4th of total cost = $12

so

for total cost = $12 X 4

= $ 48

the game cost is $48

7 0
3 years ago
Read 2 more answers
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