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DiKsa [7]
3 years ago
5

Find the area 8.4mm and 25.5mm

Mathematics
1 answer:
Nadya [2.5K]3 years ago
7 0

Answer:

214.2mm

Step-by-step explanation:

To find area (I'm assuming a rectangle since you didn't specify)  All you need to do is multiply the two to find area.

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Subtract 1/4w+4 from 1/2w+3.<br><br> A. −14w+7<br><br> B. −14w+1<br><br> C. 14w+7<br><br> D. 14w−1
frozen [14]
Im going with B) -14w+1
3 0
3 years ago
Read 2 more answers
How do you find each measure for #7?
Lunna [17]

Step-by-step explanation:

From this figure TUW+WUV=TUV ; (5x+3)+(10x-5)=17x-16 so 15x-2=17x-16 ;14=2x therefore x=7

then substitute x on it.

TUW=5x+3=5(7)+3=35+3=38

WUV=10x-5=10(7)-5=70-5=65

TUV=17x-16=17(7)-16=119-16=103

8 0
3 years ago
Find the area a of the triangle whose sides have the given lengths. a = 20, b = 15, c = 25 a =?
PIT_PIT [208]

The area of a triangle with sides a = 20, b = 15, and c = 25 is 150.

The sides of the triangle are given as a = 20, b = 15, and c = 25.

We will use Hero's formula to find the area of this triangle.

<h3>What is Heron's formula?</h3>

It is a three-face polygon that consists of three edges and three vertices.

We use Heron's formula to find the area of a triangle with 3 sides:

Herons formula:

Area of a triangle =  \sqrt{s(s-a)(s-b)(s-c)}\\

Where a, b, and c are sides of a triangle.

And s = semi perimeter of a triangle.

s = \frac{a+b+c}{2}

If the sum of two sides of a triangle is greater than the third side of a triangle then the sides of a triangle are true.

Let the given sides be:

a = 20, b = 15 and c = 25.

(20 + 15) > 25

(20 + 25) > 15

(15 + 25) > 20 so the given sides are true.

Now,

Semi perimeter of the triangle:

s = (a+b+c) / 2

s = (20+15+25) / 2

s = 60 / 2

s = 30

Putting s = 30 in the area of the triangle.

we get,

Area of the triangle = \sqrt{s(s-a)(s-b)(s-c)}\\

Area of the triangle = \sqrt{30(30-20)(30-15)(30-25)}\\\\\sqrt{30\times10\times15\times5}\\\\\sqrt{22500}\\\\150

Thus, the area of a triangle is 150.

Learn more about the Area of triangles here:

brainly.com/question/11952845

#SPJ1

3 0
1 year ago
What is the y coordinate?
wel

Answer:

2

Step-by-step explanation:

3 0
2 years ago
can someone tell me the scale factor for this ?! i know for a fact the triangles are similar! idk if my similarity statement is
Elis [28]

Answer:

The scale factor should be 1:2 cause from 2.1 to 4.2 is doubled and so is 7.5 to 15 and 5.5 to 11.

Step-by-step explanation:

Hope this helps!

7 0
3 years ago
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