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ddd [48]
3 years ago
5

Dave wants to build a rectangular screened-in porch that is 20 feet long, and it will extend 6 feet out from the backside of his

house.
Dave sketches a scale drawing of the porch. Choose a reasonable size and scale for Dave’s drawing of the porch. How should Dave label the dimensions of the model?
Mathematics
1 answer:
CaHeK987 [17]3 years ago
4 0

Answer:

Scale of the drawing would be 20/12 inch and 0.6 (6/12) inch

Step-by-step explanation:

For most of the residential buildings an scale of 1 inch = 12 feet can be used to draw the residential units.

In that case the scale of the drawing would be 20/12 inch and 0.6 (6/12) inch

Dave should label the dimensions in inches

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How to solve x^2+8x+3 using the quadratic formula​
Schach [20]

Answer:

x = sqrt(13) - 4 or x = -4 - sqrt(13)

Step-by-step explanation:

Solve for x:

x^2 + 8 x + 3 = 0

Hint: | Solve the quadratic equation by completing the square.

Subtract 3 from both sides:

x^2 + 8 x = -3

Hint: | Take one half of the coefficient of x and square it, then add it to both sides.

Add 16 to both sides:

x^2 + 8 x + 16 = 13

Hint: | Factor the left hand side.

Write the left hand side as a square:

(x + 4)^2 = 13

Hint: | Eliminate the exponent on the left hand side.

Take the square root of both sides:

x + 4 = sqrt(13) or x + 4 = -sqrt(13)

Hint: | Look at the first equation: Solve for x.

Subtract 4 from both sides:

x = sqrt(13) - 4 or x + 4 = -sqrt(13)

Hint: | Look at the second equation: Solve for x.

Subtract 4 from both sides:

Answer: x = sqrt(13) - 4 or x = -4 - sqrt(13)

7 0
3 years ago
The height of a parallelogram is 4.5 CM the base is twice the height what is the area
cestrela7 [59]

Answer:

40.5

Step-by-step explanation:

<u>To find the area of a parallelogram you use the equation a=bh. You already know that the height is 4.5cm, which plugged in to the equation makes the equation a=b*4.5. The base is twice the height, and knowing that the height is 4.5cm, you just multiply that by two in order to get 9cm for the base. Plugged in to the equation now it is a=9*4.5. We now know the area = 40.5</u>

<u />

6 0
3 years ago
The following dot plot shows the height of each toddler at Ms. Cabrera's daycare. Each dot represents a different toddler. A dot
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Answer:5;85

Step-by-step explanation:it is trust me

7 0
3 years ago
The sales tax on a $350 computer is $22.75. find the sales tax rate
Mice21 [21]
X = Sales Tax Rate
350 * X = 22.75
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0.065 = 6.5%

6 0
2 years ago
Jill jogs 3/4 of a mile in 1/10 of an hour at this rate how fast does she run one mile.
ikadub [295]

Answer:

<u>8 minutes</u>

Step-by-step explanation:

Jill jogs 3/4 of a mile in 1/10 hour.

⇒ 3/4 of a mile takes <u>6 minutes</u>

<u />

For one mile :

  • 3/4 mile x 4/3 : 6 x 4/3 minutes
  • 1 mile : 2 x 4 minutes
  • 1 mile takes <u>8 minutes</u>
3 0
1 year ago
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