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Ber [7]
3 years ago
4

Simplify the expression: (x + 3)(2x - 1)

Mathematics
2 answers:
kipiarov [429]3 years ago
6 0

Answer:

The correct option is option D) 2x² + 5x - 3

Step-by-step explanation:

<em>Simplify the expression: (x + 3)(2x - 1) </em>

<em>A) 7x2 - 3 </em>

<em>B) 2x2 - 7x - 3 </em>

<em>C) 2x2 - 5x - 3 </em>

<em>D) 2x2 + 5x - 3</em>

To solve the problem given, we will follow the steps below;

(x + 3)(2x-1)

We will start by opening the parenthesis

x(2x -1) +3(2x-1)

2x² - x + 6x -3

Then we can now add the values with the same coefficient

2x² + 5x -3

Therefore, the correct option is option D) 2x² + 5x - 3

Firlakuza [10]3 years ago
3 0
The answer for this problem is d
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A 20 foot ladder leaning against a wall is used to reach a window that is 17 feet above the ground. How far from the wall is the
GarryVolchara [31]

The bottom of the ladder is 10.5 feet away from the wall

Step-by-step explanation:

The given scenario forms a right triangle.

Where

The length of ladder will be the hypotenuse

The wall on which the window is situated will ebt he perpendicular and

The distance between the foot of ladder and the wall will be the base

So,

Hypotenuse = H = 20 foot

Perpendicular = P = 17 feet

Base = B = ?

Using the Pythagoras theorem

H^2=P^2+B^2\\(20)^2=(17)^2+B^2\\400=289+B^2\\400-289=B^2\\B^2=111\\Taking\ square\ root\ on\ both\ sides\\\sqrt{B^2}=\sqrt{111}\\B=10.53\\Rounding\ off\ to\ the\ nearest\ tenth\\B=10.5

The bottom of the ladder is 10.5 feet away from the wall

Keywords: Triangle, Pythagoras Theorem

Learn more about Pythagoras theorem at:

  • brainly.com/question/9532142
  • brainly.com/question/9590016

#LearnwithBrainly

8 0
3 years ago
The ratio of money in Terry's bank account to Faye's bank account was 3:7. Terry then put £220 in his account and Faye withdrew
Nesterboy [21]

Answer:

£910

Step-by-step explanation:

let 3x and 7x be the initial amounts in their accounts, then after alterations

Terry has 3x + 220

Faye has 7x - 300

After these changes the amounts are equal, hence

7x - 300 = 3x + 220 ( subtract 3x from both sides )

4x - 300 = 220 ( add 300 to both sides )

4x = 520 ( divide both sides by 4 )

x = 130

Faye initially had 7 × £130 = £910 in her account


3 0
3 years ago
32 x 12.71 pls help me
faust18 [17]

Answer:

406.72

Step-by-step explanation:

5 0
3 years ago
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weeeeeb [17]

Answer:

4.5 inches

Step-by-step explanation:

To find the height in inches of the model, you need to change the ration into a fraction:

\frac{1}{50}

Then try to figure out the value of the denominator in terms of the ratio:

\frac{1}{50} =\frac{x}{725}

In this equation we need to figure out how much the denominator of the fraction is changing by, by dividing 725 by 50. Then, multiply that by one:

4.5

8 0
3 years ago
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