PLEASE ANSWERRRRRRRRRRR

Pachacha [2.7K]

Answer:

(b) 1.95

Step-by-step explanation:

One of the easiest ways to evaluate an arithmetic expression of almost any kind is to type it into an on-line calculator. Many times, typing it into a search box is equivalent.

<h3>Application</h3>

See the attachment for the search box input (at top) and the result. This calculator has the benefit that it always follows the Order of Operations when evaluating an expression. (Not all calculators do.)

ln(7) ≈ 1.95

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Additional comment

If your math course is asking you to evaluate such expressions, you have probably been provided a calculator to use, or given the requirements for a calculator suitable for use in the course.

There are some very nice calculator apps for phone and tablet. Many phones and tablets already come with built-in calculator apps. For the purpose here, you need a "scientific" or "graphing" calculator. A 4-function calculator will not do.

As with any tool, it is always a good idea to read the manual for your calculator and work through any example problems.

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Years ago, handheld calculators were not available, and most desktop calculators were only capable of the basic four arithmetic functions. Finding a logarithm required use of a table of logarithms. Such tables were published in mathematical handbooks, and extracts of those often appeared as appendices in math textbooks used in school.

3 0

2 years ago

Conclusions A catalog sales company promises to deliver orders placed on the Internet within 3 days. Follow-up calls to a few r

IrinaVladis [17]

It is d

hope this helped :)

3 0

2 years ago

Which is not an equation of the line going through (3, -6) and (1, 2)?

777dan777 [17]

Answer:

B, C

Step-by-step explanation:

The equation of a line can be given by y -y₁= m(x -x₁), where m is the slope. This is also known as the point-slope form.

$\boxed{ slope = \frac{y _{1} - y_2 }{x_1 - x_2} }$

Slope of the line

$= \frac{2 - ( - 6)}{1 - 3}$

$= \frac{2 + 6}{ - 2}$

$= \frac{8}{ - 2}$

= -4

Substitute m= -4 into the equation:

y -y₁= -4(x -x₁)

Substitute a pair of coordinates into (x₁, y₁):

Let's start by substituting (1, 2).

y -2= -4(x -1)

This gives us the same equation as D, making D an incorrect option. Note that the question asks for which is not the correct equation.

Let's change the above into the slope-intercept form, where by y is the subject of formula.

Start by expanding the right-hand side:

y -2= -4x +1

+2 on both sides:

y= -4x +3

This equation is not the same as C. C is thus the correct option.

Let's check for options A and B.

The equation in option B is not the correct equation either as they have substituted (2, 1) instead of (1, 2) into (x₁, y₁). Thus, option B is also correct.

y -y₁= -4(x -x₁)

Substitute (3, -6) into (x₁, y₁):

y -(-6)= -4(x -3)

y +6= -4(x -3)

This is the same as option A, making option A incorrect too.

4 0

2 years ago

What is the y-coordinate of the solution for the system of equations? x−y=−11 y+7=−2x

ICE Princess25 [194]

Answer:

$y= 5$

Step-by-step explanation:

Given the system of equations:

$x-y=-11$

$y+7=-2x$

In order to find the y coordinate of the solution we must first find the solution to this system of equations. We first start by solving one of the given equations and then substitute the answer of that into the second equation and further solve to get the final answers.

$x=y=-11$