All categories

3 years ago

It is not possible to solve percent problems using proportions. True False

Mathematics

2 answers:

GenaCL600 [577]3 years ago

8 0

Answer:

It is False, so the other guy is correct

Step-by-step explanation:

ra1l [238]3 years ago

5 0

False.

It is possible to solve percent problems using proportions.

the part = percent /100 * whole

dividing both sides by the whole produces this propotion

part / whole = percent /100

You might be interested in

Complete these activities. Consider the following information from Tiger Oil Company: By multiplying matrices, calculate the mat

kherson [118]

Given the matrix

$\left[\begin{array}{cc}20&30\\15&5\\5&2\end{array}\right]$

representing the number of thousands of gallons of regular and premium oil sold by the three stations of Tiger oil company and the matrix

$\left[\begin{array}{c}500\\600\end{array}\right]$

representing dolloars per thousands of gallons of regular and premium oil sold by Tiger oil company.

T<span>he matrix for total dollar volume of sales using matrix multiplication is given by:

$\left[\begin{array}{cc}20&30\\15&5\\5&2\end{array}\right] \left[\begin{array}{c}500\\600\end{array}\right]= \left[\begin{array}{c}20(500)+30(600)\\15(500)+5(600)\\5(500)+2(600)\end{array}\right] \\ \\ = \left[\begin{array}{c}10000+18000\\7500+3000\\2500+1200\end{array}\right] =\left[\begin{array}{c}28000\\10500\\3700\end{array}\right]$

Therefore, the total dolar </span><span>volume of sales is per thousand of gallons of oil is given by:

$\left[\begin{array}{c}28000\\10500\\3700\end{array}\right]$ </span>

6 0

4 years ago

Read 2 more answers

Part 1:

alexira [117]

The size of the corner you need to cut in order for your box to have this area is 0.5 inches

<h3>Part 1: A. Express the new length of the long side of the note card, once the two corners are removed.</h3>

The base length is given as:

Length = 7

When the edges are removed, the new length becomes

New length = 7 - x - x

Evaluate

New length = 7 - 2x

<h3>Part 1: B. Express the new width of the short side of the note card, once the two corners are removed.</h3>

The base width is given as:

Width = 4

When the edges are removed, the new length becomes

New width = 4 - x - x

Evaluate

New width = 4 - 2x

<h3>Part 2: Write a function A(x) that defines the area of the bottom of the box, once the corners are removed and the sides are folded up.</h3>

The area of the bottom of the box is calculated as:

Area = New length * New width

This gives

Area = (7 - 2x) * (4 - 2x)

Rewrite as:

A(x) = (7 - 2x) * (4 - 2x)

<h3>Part 3: Set up an equation in standard form that will help you find the size (x)</h3>

The area is given as:

Area = 16

So, we have:

(7 - 2x) * (4 - 2x) = 16

Expand

28 - 14x - 8x + 4x^2 = 16

Rewrite as

4x^2 - 14x - 8x + 28 - 16 = 0

Evaluate the like terms

4x^2 - 22x + 12= 0

<h3>Part 3: Solve this equation and take note of any extraneous solutions</h3>

We have:

4x^2 - 22x + 12= 0

Expand the equation

4x^2 - 24x - 2x + 12 = 0

Factorize the equation

4x(x - 6) - 2(x - 6) = 0

Factor out x - 6

(4x - 2)(x - 6) = 0

Solve for x

x = 0.5 or x = 6

The value of x = 6 is too big for the dimensions of the box.

So, x = 6 is an extraneous solution for the equation

Hence, the size of the corner you need to cut in order for your box to have this area is 0.5 inches