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sergij07 [2.7K]
3 years ago
5

Pls help me i need help with this

Mathematics
1 answer:
Rudiy273 years ago
7 0

my answer is in this picture.

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Can someone explain how these equal 5 and -5 please
uysha [10]
I'm not sure how you obtained -5 as your answer but this is the mathematical explanation. hope this helps!
{x}^{2}  + 3x = 40 \\  {x}^{2}  + 3x - 40 = 0 \\(x + 8)(x - 5) = 0 \\ x =  - 8 \\ x = 5
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Find the sum of 3+1/2
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Step-by-step explanation:

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A rectangle is 6 centimeters long and 4 centimeters wide. What is the area of the rectangle?
lorasvet [3.4K]

Answer:

\huge{\boxed{\mathfrak{Answer\hookleftarrow}}}

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Area of a rectangle = length (l) × width (w)

Area = 6 × 4

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→ The area of the rectangle is <u>2</u><u>4</u><u> </u><u>cm²</u><u>.</u>

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