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3 years ago

You bought a 5 pound turkey for 14.45. How much would a 7 pound turkey cost?

Mathematics

2 answers:

Firlakuza [10]3 years ago

8 0

Given:

Turkey bought = 5 pound

Cost of 5 pound of turkey = 14.45

To find:

Cost of 7 pound of turkey

Solution:

Using unitary method, if the cost of 5 pound of turkey is 14.45 then the cost of one pound of turkey would be $\frac{14.45}{5}=2.89$

Therefore, the cost of one pound of turkey is 2.89.

So, cost of 7 pound of turkey = $2.89\times7=20.23$

Thus, 7 pounds of turkey costs 20.23 units.

Unitary method:

The unitary method is a technique for solving a problem by first finding the value of a single unit, and then finding the necessary value by multiplying the single unit value. In essence, this method is used to find the value of a unit from the value of a multiple, and hence the value of a multiple.

Crazy boy [7]3 years ago

7 0

Answer:

$20.23

Step-by-step explanation:

if you take 14.45 and divide it by 5 you get $2.89

which makes it 2.89 a pound. so 2.89 multiplied by 7 gets you $20.23

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HELP PLEASE 3. Simplify the expression (5 points) [(7 + 3) • 5 - 4] = 2 + 2

krok68 [10]

Answer: 46 or 46=4

Step-by-step explanation:

Do what's in the Parenthesis first so 7+2=10 which now give you the equation

[10x 5-4]=2+2

Now we Multiply so we do 10x5 which is 50 so that now gives us the equation[50-4]=2+2

Now we add the 2+2 which is 4 giving us the equation [50-4]=4

Now we subtract 50-4 giving 46

46=4

5 0

3 years ago

Read 2 more answers

Given f(x) = 4x^4 find f^-1(x) Then state whether f^-1(x) is a function.

sdas [7]

Answer:

$f^{-1}(x)=\pm\sqrt[4]{\dfrac{x}{4}}$
$f^{-1}(x) \quad\text{is not a function}$

Step-by-step explanation:

To find the inverse function, solve for y:

$x=f(y)\\\\x=4y^4\\\\\dfrac{x}{4}=y^4\\\\\pm\sqrt[4]{\dfrac{x}{4}}=y\\\\f^{-1}(x)=\pm\sqrt[4]{\dfrac{x}{4}}$

f(x) is an even function, so f(-x) = f(x). Then the inverse relation is double-valued: for any given y, there can be either of two x-values that will give that result.

___

A function is single-valued. That means any given domain value maps to exactly one range value. The test of this is the "vertical line test." If a vertical line intersects the graph in more than one point, then that x-value maps to more than one y-value.

The horizontal line test is similar. It is used to determine whether a function has an inverse function. If a horizontal line intersects the graph in more than one place, the inverse relation is not a function.

Since the inverse relation for the given f(x) maps every x to two y-values, it is not a function. You can also tell this by the fact that f(x) is an even function, so does not pass the horizontal line test. When f(x) doesn't pass the horizontal line test, f^-1(x) cannot pass the vertical line test.

_____

The attached graph shows the inverse relation (called f₁(x)). It also shows a vertical line intersecting that graph in more than one place.