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Nadusha1986 [10]
3 years ago
8

I need help with questions two three and four

Mathematics
1 answer:
vampirchik [111]3 years ago
5 0
#1 Apple's: $7.56. (3 4/5 $1.99 # 19/5 x 1.99 = $7.56)
#2 Pears: $1.68 (3/4 $2.25. 3/4 x 2.25 = $1.68)
#3 Bananas: $6.42. (3 2/3. 11/3 x $ 1.75 = $6.42)
+ _____
$15.66

#4. 20.00
- 15.66
______
$ 4.34 change





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The ratio of the length to the width of a 5:4. The length of the cereal box is 60 centimeters. How wide is the box
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Answer:

48

Step-by-step explanation:

60 = 5x

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12x4 = 48

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In general, f−1(f(x)) = f(f−1(x)) =
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Answer:

f−1(f(x)) = f(f−1(x)) = x

Step-by-step explanation:

Follow this simple example using the function f(x) = x + 2

f(x) = x + 2

NOw we find the inverse function f^(1)(x).

y = x + 2

x = y + 2

y = x - 2

f^(-1)(x) = x - 2

The inverse function is f^(-1)(x) = x - 2

Now we do the two compositions of functions:

f^(-1)(f(x)) = x + 2 - 2 = x

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Both are equal to x.

Answer: f−1(f(x)) = f(f−1(x)) = x

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2 years ago
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The ratio of the side length of Square P to the side length of Square Q is 2:7. If the side length of Square P is 3.5 inches, wh
Igoryamba

Answer:

Perimeter of Square Q = 49

Step-by-step explanation:

given:

sides P:Q = 2:7

side length of P = 3.5.

First, determine length of side Q by using the ratio

\frac{2}{7}=\frac{3.5}{side Q}\\side Q = \frac{7*3.5}{2}

The perimeter is 4 times the length of the side

So, Perimeter of square Q = 4 *(7*3.5)/2 = 49

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