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Nimfa-mama [501]
3 years ago
6

What is the area of the triangle pls help

Mathematics
1 answer:
OLga [1]3 years ago
8 0

Answer:

Area of a triangle =1/2bh.

1/2×8×10=40cm^2.

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A square napkin is folded in half on the diagonal and placed on the diameter of a round plate (see diagram below). If the folded
Crank

Answer:

A=81(\pi-1)\ in^2

Step-by-step explanation:

step 1

Find the area of the plate

The area of a circle is given by the formula

A=\pi r^{2}

we have

r=18/2=9\ in ---> the radius is half the diameter

substitute

A=\pi (9)^{2}\\A=81\pi\ in^2

step 2

Find the area of the square napkin folded (is a half of the area of the square napkin)

we know that

The diagonal of the square is the same that the diameter of the plate

Applying Pythagorean theorem

D^2=2b^2

where

b is the length side of the square

we have

D=18\ in

substitute

18^2=2b^2

solve for b^2

b^2=162\ in^2 -----> is the area of the square

Divide by 2

162/2=81\ in^2

step 3

Find the area of the space on the plate that is NOT covered by the napkin

we know that

The  area of the space on the plate that is NOT covered by the napkin, is equal to subtract the area of the square napkin folded (is a half of the area of the square napkin) from the area of the plate

so

A=(81\pi-81)\ in^2

simplify

A=81(\pi-1)\ in^2

8 0
3 years ago
The diameter, <img src="https://tex.z-dn.net/?f=D" id="TexFormula1" title="D" alt="D" align="absmiddle" class="latex-formula">,
xenn [34]

Answer:

88.6

Step-by-step explanation:

A=4(pi)r^2/3

D=9.2 : r=4.6

A=4(3.14)(4.6^2)/3=88.5898667

3 0
3 years ago
Hello I hope you have a wonderful day can you pls help me out it I will fail
ASHA 777 [7]
A. Independent goes on the x axis and dependent goes on the y axis
B. It shows his or hers miles per hour or mph or distance they run in a hour

Hope this helps have a great Monday ❤️
5 0
3 years ago
Y=2x+6 and y=-3x+16 for solving the system
Butoxors [25]
Substitution

Step 1: Solve for x or y in either of the two equations. In the equations that you are given, y is already solved for you.

Step 2: Plug in 2x + 6 into the opposite equation.

   2x + 6 = -3x + 16
         - 6              - 6
------------------------------
   2x = -3x + 10
+ 3x  + 3x
------------------------------
   5x  =  10
 ------   ------
    5        5

x = 2

Step 3: Plug in the x value into either equation.

y = 2(2) + 6
y = 4 + 6
y = 10

The final answer gets expressed as a coordinate pair: (x,y) (2,10)

I hope this helps you :)




4 0
3 years ago
A spinner has 10 equally sized sections, 6 of which are gray and 4 of which are blue. The spinner
bekas [8.4K]

Answer:

6/25

Step-by-step explanation:

6/10 chance for grey.

4/10 chance for blue.

And = Multiplication

Or = Addition

6/10 times 4/10 = 24/100

24% chance or 6/25 chance it will land on grey and blue.

(Theoretical Probability)

7 0
4 years ago
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