Which expression represents the area of triangle ABC in square meters?

Mathematics

1 answer:

trapecia [35]3 years ago

3 0

Answer:

Option A : $\frac{1}{2}*14*57$ is the correct answer.

Step-by-step explanation:

Given that:

Height of triangle ABC = 14 meters

Base of triangle ABC = (20 + 37) meters

Base of triangle ABC = 57 m

Area of triangle = 1/2 * Height * Base

Area of triangle = $\frac{1}{2}$ * 14 * 57 square meters

Hence,

Option A : $\frac{1}{2}*14*57$ is the correct answer.

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<h3>What is algebra?</h3>

One of the many branches of mathematics is algebra. Algebra, which is a common thread throughout practically all of mathematics, is broadly defined as the study of mathematical symbols and the rules for manipulating these symbols in formulas.

<h3>According to the information :</h3>

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I understand that the question you are looking for is:

In Mrs. Marsh's algebra class, 30 of the 36 students took the Chapter 4 test, and their mean score was $72 \%$. The next day the other six students took the test and their mean score was $78 \%$. What is the new class mean? Express your answer as a percent.

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PLEASE!!!

garik1379 [7]

We see on the picture that :
When we go down one row, we add one horizontal and two diagonal cards.

In the first row we have 2 cards
In the second 2+3=5 cards
In the third 5+3=8 cards
etc.

General formula : in the n-th row from the top, we have $\boxed{ 2+(n-1)\cdot3\text{ cards}}$