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Andre45 [30]
2 years ago
10

Please help...thanks

Mathematics
2 answers:
Marat540 [252]2 years ago
8 0
There are 9 square units please mark as brainiest thanks!
nikitadnepr [17]2 years ago
3 0
Answer: 9 square units
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A long paper strip with a width of 5 cm is folded, as shown in the picture. Find the smallest possible area of the gray triangle
Stolb23 [73]

By using some logic and the formula of the triangle's area, we will find that the smallest possible area is 12.5 cm²

How to start thinking about the problem.

First of all, for the configuration of this paper strip, we can see that the base of the triangle will <u>always be equal of the width of the paper</u>. Thus, the smallest area will be only dependent of the height of the triangle.

Now, we need to analyze the picture to figure out how we can get the smallest height possible for that triangle.

What is the smallest height possible.

Doing this, we shall see that the smallest height possible is actually when the height equals the width itself, as it's shown in the attached image.

How to calculate the smallest area possible.

Thus, to calculate the smallest area, we just have to use the formula of the area of the triangle, which is   \frac{b\times h}{2}<em>, where </em><u><em>b is the base</em></u><em> and </em><u><em>h is the height</em></u><em>.</em>

As we previously found, for this question, the

<em>base = height = width of the paper = 5cm</em>

Now, we just have to calculate it with the formula

Area = \frac{base \times height}{2} \\\\&#10;\\&#10;Area = \frac{5 \times 5}{2} \\&#10;\\&#10;Area = \frac{25}{2}\\&#10; \\&#10;Area = 12.5 cm^{2}

learn more about the area of the triangle here: brainly.com/question/15442893

3 0
2 years ago
SOMEONE HELP ASAP PLZ!Z!!!!!
lina2011 [118]
The answer is obviously not A and B so that leaves us with only C or D and the one that id the best choice would have to be C because it gives good information about how it is used and where it would be installed 

Hope this helped : ) 
7 0
3 years ago
Find the value of the expression: −0.5(7b−12a)−(8.4a−14b) if a=−10; b=−6.
ELEN [110]

Replace a and b in the equation with their values given:

-0.5(7(-6)-12(-10)-(8.4(-10)-14(-6))

Multiply within the parentheses

-0.5(-42 + 120) -(-84 + 84)

Add inside the parenthesis:

-0.5(78)-0

Multiply:

-.05 x 78 = -39

The answer is -39

3 0
3 years ago
In triangle ABC, AB=5cm, AC = 10cm, and BC = 12 cm<br>Determine the size of the largest angle.​
avanturin [10]

Answer:

The largest angle is <B.

Because, AC is the longest and largest side of ∆ABC. Therefore, the angle opposite the largest side is also the largest.

This is a property in geometry.

Step-by-step explanation:

Please give me Brainlest!

5 0
3 years ago
Factorise: (3x - 1/2 y + 1/3 z)^2​
Rufina [12.5K]

Given:

(3x - \frac{1}{2} y + \frac{1}{3} z)^{2}

Taking the LCM as 6,

( \frac{1}{6} (18x−3y+2z))^{2}

Applying the product rule to \frac{1}{6} (18x−3y+2z)^{2}:-

=  > ( \frac{1}{6})^{2} (18x−3y+2z)^{2}

Now applying the product rule to 1/6:-

\frac{1^{2} }{ {6}^{2} }(18x - 3y + 2z)^{2}

Hence, the answer.

7 0
2 years ago
Read 2 more answers
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