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jolli1 [7]
2 years ago
8

PLEASE ANSWER ONLY IF RIGHT.

Mathematics
1 answer:
Colt1911 [192]2 years ago
8 0

Answer:

• Second step → Division property of equality.

• Third step → Simplifying.

• Fourth step → Subtraction property of equality.

• last step → Simplifying [ answer ]

.

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Remove the brackets and simplify
Komok [63]

Answer:

5x - 7 {x}^{2}  -  {(2x)}^{2}  \\  = ( {2}^{2}  {x}^{2} ) - 7 {x}^{2}  + 5x \\  = 4 {x}^{2}  - 7 {x}^{2}  + 5x \\  = x(4x - 7x + 5) \\  = x( 5 - 3x) \\  = { \underline{ \underline{ \:  \:  5x - 3 {x}^{2}  \:  \: }}}

7 0
2 years ago
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3(b - 15) =9 solve for b
shepuryov [24]
B = 18 because 18-5 is equal to 3 and 3x3 is equal to 9.
4 0
3 years ago
How many liters each of a 25% acid solution and a 50% acid solution must be used to produce 80 liters of a 40% acid solution?
alina1380 [7]

Answer:

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Step-by-step explanation:

Let 25% solution is x liters, then 50% solution is (80 - x) liters.

<u>Acid content is going to be same:</u>

  • 0.25x + 0.5(80 - x) = 80*0.4
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  • 0.25x = 8
  • x = 8/0.25
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So 32 liters of 25% solution and 80 - 32 = 48 liters of 50% solution

4 0
3 years ago
a plane flies 480 miles with a 15 mph tailwind and then back 480 miles with a 15 mph headwind. if the plane completes the trip i
Minchanka [31]
Since we know the x and y, you would divide 480 by 15 and 32 miles per hour. Then you would multiply 7.2 by 32 and get 230.4. Your trying to find with wind and against wind so just times that by two and get 460.8. I think
8 0
2 years ago
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120% of 58

(120/100) * 58

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So total amount Alexi needs to pay = $69.60
8 0
3 years ago
Read 2 more answers
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