4( 40 - 30)
subtract 30 from 40 is expressed as 40 - 30
then multiply by 4 is expressed as 4 × (40 - 30) or 4(40 - 30) = 40
The slope of the line as shown in the graph attached is 7/3
<h3>What is an
equation?</h3>
An equation is an expression that shows the relationship between two or more numbers and variables.
A variable can either be independent or dependent. A dependent variable depends on other variable while an independent variable does not depend on other variable.
A linear equation is in the form:
y = mx + b
Where m is the rate of change (slope) and b is the y intercept.
The slope of a line = vertical rise / horizontal run
From the image:
Slope = rise / run = 7/3
Find out more on equation at: brainly.com/question/2972832
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Answer:
7
Step-by-step explanation:
9 - 8 + (2 x 3)
9 - 8 + 6
1 + 6 = 7
It is given that area( Δ ab c) =6 square units.
Also ab║d e
⇒b d =4 b c
I have depicted picture below.
Consider Δ cde in which points a and b are in the interior such that ab║de.
So, as you know that if in a triangle line joining two points is parallel to third side then the two sides are proportional.i.e
⇒ca/ae =cb / bd
Also, ∠ c is common.
∴Δcab is similar to Δ cde.
As we know if ratio of areas of two similar triangles is square of their corresponding sides.
=![\frac{Ar(Δcab)}{Ar(Δcde)}=[\frac{cb}{bd}]^2](https://tex.z-dn.net/?f=%5Cfrac%7BAr%28%CE%94cab%29%7D%7BAr%28%CE%94cde%29%7D%3D%5B%5Cfrac%7Bcb%7D%7Bbd%7D%5D%5E2)
⇒6/Δcde =1/4
⇒Ar (Δ cde)=6×4
Ar (Δ cde) =24 square centimeter
Answer: The formula is C=2 π r
Step-by-step explanation: Hope this helps
