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melamori03 [73]
3 years ago
13

In the scale used on a blueprint,1/4 inch represents 2 feet.On the blueprint,what is the length of a room with an actual length

of 20 feet?

Mathematics
2 answers:
attashe74 [19]3 years ago
6 0
You would have to multiply 2 feet by 10 to get 20 feet, so multiply 1/4 by 10 to get 5/2 inches. The length of a 20 ft. room on a blueprint would be 5/2 or 2.5 inches.
den301095 [7]3 years ago
3 0

Answer: Option 'd' is correct.

Step-by-step explanation:

Since we have given that

In the scale used on a blueprint,

\dfrac{1}{4}\ inch=2\ feet

Length of a room = 20 feet

We need to find the  Length of room in a blue print.

We will use "Unitary method":

2\ feet=\dfrac{1}{4}\ inch

1\ feet=\dfrac{1}{8}\ inch

So,  20\ feet=\dfrac{1}{8}\times 20=2.5\ inches

Hence, Option 'd' is correct.

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B.-Notice that the right hand side of the equation is equivalent to Sue's age, which we know is John-1, however it is currently written to be "three times Sue's age minus one" which would give us John's age, plus two more years than his actual age on the left hand side.

C.-Frank's age is equal to John's plus fifteen (right side of the equation) and Frank is equal to Sue's age times 3. But, if Sue is in terms of Johns, then Sue's age is John's minus one. Therefore, Frank's age is equal to three times Sue's age of John minus one, which is the left-hand side of our equation.


Therefore C is the answer. C:

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Step-by-step explanation:

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Part A: If (7^2)^x = 1, what is the value of x? Explain your answer. (10 points)
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In Part B, you have to first evaluate 7^0, that is 1. Now, we have the equation 1^x = 1. In this case, 1 raised to any exponent is still only 1. Imagine 1^17, this would be 1 times itself 17 times or just 1.
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3 0
3 years ago
Show all work. <br><br>PLEASE HELP!!!!
34kurt
(a) Using the table, give the values fo rthe inverse


1) original table of values:


x      1     2     3    4    5

f(x)   0     1     1    5    3


2) The inverse of the function is obtained by exchanging x and f(x), this is:


                   ( x, f(x) ) → ( f(x), x)


3) So, the table of values of the inverse of the given function is:


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(b) Is the inverse a function?


No, the inverse is not a function, since the table of the inverse shows that the x -value 1 has two different images.


This ambigüity is opposite to the definition of a function, which requires that any input value has only one output. For that reason, the inverse is not a function. You cannot tell whether the image of 1 is 1 or 2, because both are images of the same value.
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