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inessss [21]
2 years ago
12

15x ( 7 - 5y ) + 3 ( 5y - x ) - ( 4x + 3 ) ( 5y - 2 )​

Mathematics
2 answers:
olga2289 [7]2 years ago
5 0

Answer:

110x-95xy+6

Explanation:

15x ( 7 - 5y ) + 3 ( 5y - x ) - ( 4x + 3 ) ( 5y - 2 )

expand:

105x-75xy+15y-3x-\left(4x+3\right)\left(5y-2\right)

simplify:

105x-75xy+15y-3x-(20xy-8x+15y-6)

open the brackets:

-20xy+8x-15y+6+102x-75xy+15y

110x-75xy-20xy+15y-15y+6

final answer:

110x-95xy+6

Sedbober [7]2 years ago
4 0
15x ( 7 - 5y) + 3 ( 5y - x) - ( 4x + 3) (5y - 2) = -95xy + 110x + 6 is your solution hope it helps :)!
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3 years ago
I need help... I honestly don’t know.
Serhud [2]

Answer:

∡ABC=55°

Step-by-step explanation:

<u>Step 1: Identify all angles</u>

∠A=(x+45)°

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∠ABC=(180-∠B)°=(180-(6x+5))°

<u>Step 2: Use the Triangle Angle Sum Theorem</u>

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<u>Step 3: Plug in x=20 for ∠ABC</u>

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(180-120-5)°

(60-5)°

55°

So ∡ABC=55°

8 0
2 years ago
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