A scale drawing is 21 inches long and 9 inches tall the real item is 30 feet tall how long is it

Answers

Answer 1

Answer: So this is a proportion. The scale is 9 inches tall and the real is 30 feet. First, multiply feet by twelve to find inches.
So the real item is 360 inches tall. So the proportion is 9:360. Or 1:40. The scale is 1/40 the size of the real item. Or the real item is 40 times the size of the scale.
So if the scale drawing is 21 inches long, that means the real item is 40 times longer, or 40·21
Therefore the real item is 840 inches long. Divide it by twelve to find how many feet long it is.
840/12=70
Therefore the real item is 70 feet long.
70ft

Answer 2

Answer: this is easy:) first lets set them up within fractions.

   9 tall 30 tall
------------ -> -----------
  21 long x long
since we don't know how long the second one is we just put x for now ;)

now in order to find the scale factor we need to divide 30 by 9 so lets do that
30 ÷ 9 = 3.33333333333333333333333
a good estimation*
so that means in order to get 30 we multiplied 3.3333333333333333333 and  9
now in order to figure out x finally we can do the same
so take 21 and multiply by 3.33333333333333333333333333
21 x 3.3333333333333333333333333333 = 69.99999999999999999999
and 69.9999999999999 is rounded out to be 70
so our answer here is 70
also in answer form:
the real item is 30 feet tall and 70 feet long:)
i hope this was helpful:)
and i don't forget to
MARK ME BRAINLIEST! :D

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5.4 5.400 less greater

Round 636 to the nearest ten and hundred

Answers

Rounding 636 to nearest ten will give 640 and rounding 636 to nearest hundred will give 600 .

Given,

Rounding 636 to nearest ten and hundred .

Here,

The number in the tens place is 3. The number after that is 6 which is greater than 5 so you round up. Therefore 636 rounded to the nearest tens place is 640.

The number in the hundreds is 6, the next number is 3 and since it is less than 5, you keep it at the same. 636 rounded to the nearest hundred place is 600.

Know more about rounding off ,

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The number in the tens place is 3. The number after that is 6 which is greater than 5 so you round up. Therefore 636 rounded to the nearest tens place is 640.
The number in the hundreds is 6, the next number is 3 and since it is less than 5, you keep it at the same. 636 rounded to the nearest tens is 600.

Help me with that please

Answers

About $5.26 will be deducted from $50

So he will get $44.74

What % of 400 is 85?

Answers

21.25% because 85/400 = .2125 which is 21.25%

(5x - 18) + (4x + 7) = 180 what is the value of x?

Answers

(5x-18)+(4x+7)=180
5x+4x=180+18-7
9x=191
x=191/9

Answer: x=191/9

The area of a plot of land is 2496 square meters. A small part of the land is fenced. The ratio of the area of the plot of land to the area that is not fenced is 48:31. What is the area of the land that is not fenced?

Answers

My late response (haha): First, you would write a proportion.

Step 1: 2496 over 48 = x over 31
(x represents the area of the land that is not fenced).

Step 2: Cross multiply
2496 times 31 and x times 48

Step 3: Calculate
77376 = 48x

Step 4: Divide both sides by 48
77376/48 = 1612
48x/48 = x

Step 5: Write it as a sentence
The area of the land that is not fenced is 1612 squared meters.

Hope that helped! Good luck! :]

Describe the translation. y=(x+3)2+4 → y=(x+1)2+6

Answers

Answer:

Shift +2 units to the right and +2 units up

Step-by-step explanation:

y = (x+3)² + 4 has a horizontal shift of -3 and a vertical shift of +4.

y = (x+1)² + 6 has a horizontal shift of -1 and a vertical shift of +6.

So do translate the first equation to the second, shift +2 units to the right and +2 units up.

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