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Dafna1 [17]
4 years ago
10

Chuanxi planned a rectangular sidewalk with a length of 21 ft. He made a scale drawing using a scale factor of 1 in. = 7 ft. He

decided to change the length of the actual sidewalk to 27 ft. If the scale drawing still has a length of 3 in., what does 1 in. represent in the new scale?
Mathematics
2 answers:
Masteriza [31]4 years ago
7 0
Original Ratio of 1 in = 7 ft so 3 in = 21 ft
Now, New ratio 1 in = x ft so 3 in = 27ft

1/x = 3/27

cross multiply a/b = c/d ad = bc
1/x = 3/27
3x = 27
x = 9

1 in represents 9 ft
Katyanochek1 [597]4 years ago
5 0

Answer:

D which is 9

Step-by-step explanation:

I took the test

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4 years ago
Find the distance UV between the points U(4,−2) and V(6,−1). Round your answer to the nearest tenth, if necessary.
Liono4ka [1.6K]

The horizontal distance is the difference of x-coordinates: 6 - 4 = 2.

The vertical distance is the difference of y-coordinates: -1 - (-2) = 1.

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8 0
3 years ago
Which expression is equivalent to 15a^8b^4/5a^4b?<br> 3a^2b^4<br> 3a^4b^3<br> 10a^4b^3<br> 10a^4b^4
EleoNora [17]

Answer:

3 a^12 b^5

Step-by-step explanation:

Simplify the following:

(15 a^8 b^4 a^4 b)/5

15/5 = (5×3)/5 = 3:

3 a^8 b^4 a^4 b

3 a^8 b^4 a^4 b = 3 a^(8 + 4) b^(4 + 1):

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3 a^(8 + 4) b^5

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Answer: 3 a^12 b^5

5 0
4 years ago
Distributing property and combining like terms <br> -10(1-3x)-10
ikadub [295]

Answer:

-20 + 30x

Step-by-step explanation:

-10(1) = -10

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new equation

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7 0
3 years ago
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Svetllana [295]

Answer:

It should be 4

Step-by-step explanation:


4 0
3 years ago
Read 2 more answers
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