Please help me with this problem

Mathematics

1 answer:

polet [3.4K]3 years ago

6 0

The answer is: [A]: "Subtraction Property of Equality" .
___________________________________________________

You might be interested in

The pyramid shown has a square base that is 12 centimeters on each side. The slant height is 18 centimeters. What is the surface

Sav [38]

The correct answer is:

576 sq. cm.

Explanation:

The surface area of a figure is the sum of the areas of the faces of the figure.

The slant height goes from the apex of the pyramid along a face and is perpendicular to the base at the bottom of that face. This gives us 2 measurements of each triangular face of the pyramid: the height (the slant height of the pyramid is the height of the triangular face), 18 cm, and the base of the triangular face, 12 cm.

The formula for the area of a triangle is A = 1/2bh; using our measurements we have:
A = 1/2(12)(18) = 108 sq. cm.

There are 4 triangular faces on a square pyramid, and each will have an area of 108 sq. cm.; this gives us:
4(108) = 432 sq. cm.

The area of the base is given by length times width, or 12*12 = 144 sq. cm.

This gives us a total surface area of 432+144=576 sq. cm.

8 0

4 years ago

Read 2 more answers

Need help fast.. I WILL MARK U BRANLEYS IF U ANSWER CORRECTLY

Oxana [17]

Step-by-step explanation:

The line

$y = -3x + 3$

Is in point Slope form. This means the Slope and the y intercept are visible in the equation 9f the form

$y = mx + b$

Where m is the Slope of the line and b is the y coordinate of the y intercept.

To determine the y intercept, assume x = 0, then - 3x = 0, so y = 3 and x = 0 (0,3}

From that point you can find the next point by choosing a value for x in the given equation to find a corresponding y.

Substitute 1 for x and get 0 for y, (1,0)

Substitue 2 for x and get - 3 for y, (2,-3)

To answer the questions use the supplied coordinates in the original equation.

#1. (-1,6)

$6 = - 3( - 1) + 3$

$6 = 3 + 3$

This is a true statement, so the line does pass through this point.

#2 (12,-33)

$- 33 = - 3(12) + 3$

$- 33 = - 36 + 3$

Again, the statement is true, so the line passes through the point.

#3 (2,9)

$9 = - 3(2) + 3$

$9 = - 6 + 3$

This is a false {untrue} statement, so the point does not sit on the line.

5 0

3 years ago

An interior angle of a regular polygon measures 170 degrees. How many sides does it have?

Leya [2.2K]

$\bf \textit{sum of all interior angles in a polygon}\\\\ n\theta =180(n-2)~~ \begin{cases} n= \stackrel{number~of}{sides}\\ \theta =\stackrel{angle~in}{degrees}\\[-0.5em] \hrulefill\\ \theta =170 \end{cases}\implies n170=180(n-2) \\\\\\ 170n=180n-360\implies 170n+360=180n\implies 360=10n \\\\\\ \cfrac{360}{10}=n\implies 36=n$