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3 years ago

On a map, 1 inch equals 20 miles. Two cities are 5 inches apart on the map. What is the actual distance between the cities?

Mathematics

1 answer:

astra-53 [7]3 years ago

3 0

Answer:

100 miles

Step-by-step explanation:

20x5

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Choose the letter of the correct answer

Sati [7]

B. Reflexive property

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2 years ago

For the function f(x) = x2 -12, find (f o f-1)(4) A. 0 B. 4 C. 10 D. 6

slega [8]

We actually don't need to do any computation. By definition, the inverse function $f^{-1}$ changes the role of input and output. So, if a function f maps x onto y, the inverse function maps y onto x.

You have to think like this: if the function makes a step further, the inverse function makes that same step back.

This means that the composition $f \circ f^{-1}$ is always the identity function $f(x) = x$ . In fact,

$(f\circ f^{-1})(x) = f(f^{-1}(x)) = x$

So, for every function, you have

$(f\circ f^{-1})(4) = f(f^{-1}(4)) = 4$

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3 years ago

Find the missing value.

denis-greek [22]

Answer:

-7

Step-by-step explanation:

x + 5 = -2

<h2>I hope this helped! :)</h2>

8 0

3 years ago

Simplify the scalar multiplication on the matrix.

Romashka-Z-Leto [24]

Answer:

third option

Step-by-step explanation:

Given

3 $\left[\begin{array}{ccc}-2&5\\1&0\\\end{array}\right]$

Multiply each element in the matrix by 3

= $\left[\begin{array}{ccc}3(-2)&3(5)\\3(1)&3(0)\\\end{array}\right]$

= $\left[\begin{array}{ccc}-6&15\\3&0\\\end{array}\right]$

7 0

3 years ago

The midpoint of RS is M(1, 2). One endpoint is R(-6, 6). Find the coordinates of endpoint S.

AysviL [449]

Answer:

The coordinates of point S are (8,-2)

Step-by-step explanation:

we know that

The formula to calculate the midpoint between two points is equal to

$M=(\frac{x1+x2}{2},\frac{y1+y2}{2})$

Let

Point S(x2,y2)

substitute the given values

$(1,2)=(\frac{-6+x2}{2},\frac{6+y2}{2})$

<em>Solve for x2</em>

$1=(-6+x2)/2\\2=-6+x2\\x2=2+6=8$

<em>Solve for y2</em>

$2=(6+y2)/2\\4=6+y2\\y2=4-6=-2$

therefore

The coordinates of point S are (8,-2)

5 0

3 years ago

On a​ map, 1 inch equals 20 miles. Two cities are 5 inches apart on the map. What is the actual distance between the​ cities?

On a map, 1 inch equals 20 miles. Two cities are 5 inches apart on the map. What is the actual distance between the cities?