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Degger [83]
3 years ago
14

Tim is building a bridge for his model railroad. He has 3 sections to fit together to fit together form the bridge span. The pie

ces are each 4.5 inches long. How long will the bridge be when completed? Explain how you solved the question.
Mathematics
1 answer:
Sergio [31]3 years ago
5 0
4.5 + 4.5 + 4.5 = 13.5
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If f(x) = 3x - 2 and g(x) = 2x + 1, find (f+ g)(x).
diamong [38]

(f+g)(x)=3x-2+2x+1=5x-1

3 0
3 years ago
Find the value of x <br> (8x-1) (4x+7)
Helen [10]

Answer:

The value of x = 7

Step-by-step explanation:

Given the right triangle

  • Right angle = 90°
  • α = (4x+7)°
  • β =  (8x-1)°

  • We know that the sum of angles of a triangle is 180°.

so

Right angle + α + β =  180°

90° + 4x+7 + 8x-1 = 180

Group like terms

4x+8x+90+7-1=180

Add similar elements: :4x+8x=12x

12x+90+7-1=180

12x+96=180

12x=84

Divide both sides by 12

\frac{12x}{12}=\frac{84}{12}

x = 7

Therefore, the value of x = 7

7 0
3 years ago
The width of a rectangle is 3 less than its length find the width of the rectangle if its perimeter is 26ft
Marta_Voda [28]

The width of rectangle is 5 feet.

Let us assume the length of rectangle to be x. So, the width of rectangle will be (x - 3).

Now, as per the known fact, perimeter, length and width of rectangle are related by the formula -

Perimeter = 2 × (length + width)

Keep the values in formula to find the value of width

26 = 2 × (x + x - 3)

Performing addition of variables inside the bracket

26 = 2 × (2x - 3)

Shifting 2 to other side of equation to find the value of x

2x - 3 = \frac{26}{2}

Performing division to find the value of x

2x - 3 = 13

Shifting 3 to other side of equation to find the value of x

2x = 13 + 3

Performing addition to find the value of x

2x = 16

Shifting 2 as denominator to other side of equation to find the value of x

x = \frac{16}{2}

Performing division to find the value of x

x = 8

So, length of rectangle is 8 feet

Width of rectangle = x - 3

Width of rectangle = 8 - 3

Width of rectangle = 5 feet

Hence, the width of rectangle is 5 feet.

Learn more about calculation involving rectangle -

brainly.com/question/24571594

#SPJ4

7 0
1 year ago
-13/10x - 3/2 (11/6x +1)
lukranit [14]
So first simplify 11/6x into 11x/6. Then -13/10x into -13x/10. So you should now have (-13x/10-11x/4)-3/2. Combine the like terms -13x/10 and -11x/4 to get -81x/20 and then with your left over -3/2= -81x/20-3/2
4 0
3 years ago
HELP HELP HELP HELP!!I WILL MARK BRAINLIEST IF CORRECT! Find the tangents of the acute angles in the right triangle. Write each
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The answer for j box is 22 and for k boxs 15
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