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nordsb [41]
2 years ago
5

D) Use your knowledge of scale drawings and image sizes to fill in the missing

Mathematics
2 answers:
astraxan [27]2 years ago
7 0

Answer:

  Your table is filled in below.

Step-by-step explanation:

The scale factor is the ratio of image size to original size. In part (d), the image height is "blocks" while the original height is "feet". So, the units of the scale factor are "blocks/ft".

Sometimes a scale factor has units, like this, and sometimes it is expressed as a pure number. A map scale factor might be the pure number ratio 1 : 62500, or it could also be expressed with units as 1 in : 1 mile.*

__

* actually, these are slightly different scales. 1:62500 is about 0.98643 inches per mile.

kolbaska11 [484]2 years ago
4 0
I know you can figure it out!! you got this
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The regular price of a watch is $32.25. During a sale, the watch was marked 16% off. What was the price of the watch during the
pochemuha

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$27.09

Step-by-step explanation:

32.25(84) = 27.09

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What are the zeros of the quadratic function f(x) = 6x^2 + 12x – 7?
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<span>6x^2 + 12x – 7 = 0

Use the quadratic formula:

x=  \frac{-b +/-  \sqrt{b^2 -4ac} }{2a}

\frac{-12+/- \sqrt{ 12^{2} -4(6)(-7)} }{12} = \frac{-12+/-17.66}{12}

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2 years ago
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Simplify and evaluate

9) 6x^2 - 27 + 4x^3

10) -7x2 - 5x + 9
6 0
2 years ago
A polygon has the following coordinates: A(-4,4), B(-1,1), C(-6,1). Find the length of BC.
Amiraneli [1.4K]

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5

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|BC|=\sqrt{(X_c-X_b)^2+(Y_c-Y_b)^2} =\sqrt{25+0} =5.

7 0
3 years ago
A school bought pens, each costing $1, and pencils, each costing $0.5. The cost of the whole purchase was $220. How many pens an
Mkey [24]

Answer:

  • <u>120 pens and 200 pencils.</u>

<u></u>

Explanation:

You can set a system of two equations.

<u>1. Variables</u>

<u />

  • x: number of pens
  • y: number of pencils

<u>2. Cost</u>

  • <em>each pen costs</em> $1, then x pens costs: x
  • <em>each pencil costs</em> $0.5, then y pencil costs: 0.5y

  • Then, the total cost is: x + 0.5y

  • The cost of the whole purchase was $ 220, then the first equation is:

          x + 0.5y = 220 ↔ equation (1)

<u>3. </u><em><u>There were 80 more pencils than pens</u></em>

Then:

  pencils  =      80   +   pens

       ↓                               ↓

       y        =      80   +      x        ↔ equation (2)

<u>4. Solve the system</u>

i) Substitute the equation (2) into the equation (1):

  • x + 0.5(80 + x) = 220

ii) Solve

  • x + 40 + 0.5x = 220
  • 1.5x = 180
  • x = 180/1.5
  • x = 120 pens

iii) Substitute x = 120 into the equation (2)

  • y = 80 + 120
  • y = 200 pencils

Solution: 120 pens and 200 pencils ← answer

6 0
2 years ago
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