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Alinara [238K]
2 years ago
13

Calculate the area of #21

Mathematics
1 answer:
Fynjy0 [20]2 years ago
5 0
Use pythagoras to find the 3rd length of the triangle:
Square root of 8.5^2-7^2= 4.82 yd
Find the area of the trapezium:
((2+(2+4.82))x7)/2
= 30.87 yd^2
To find the area of the parallelogram you just take away the area of the triangle from the area of the trapezium:
Area of triangle is (4.82x7)/2= 16.87yd^2
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How to find the area of the 45-45-90 triangle with a hypotenuse of 24?
ss7ja [257]
The area of a triangle is 1/2(base x height) .

The two legs of this triangle are equal.  If you position it properly,
one of them is the base, and the other one is the height.

Since it's a right triangle,    A² + B² = C²

But  A = B  and  C = 24 .

2A² = (24)²

A² = (24)² / 2

But since  A=B,  A² is also (base x height) of the triangle.
Area is just 1/2 of it.

Area = 1/2(24²/2) = (24)²/4 = (24/2)² = (12)² = <u>144</u> . 


6 0
3 years ago
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What type of pattern is represented by these numbers: 24, 48, 96, 192
Arte-miy333 [17]
Linear, when you plot the numbers it will be in a line. Remember “(line)ar”
5 0
3 years ago
What is the complex conjugate of -3+5i
andrew-mc [135]

Answer:

-5-2i

hope this helps :)


4 0
3 years ago
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You need 1 1/4 cups of sugar to make 20 cookies. To make 12 cookies you will need ____ cups of sugar?
iris [78.8K]

Answer:

0.75 or 3/4 cups

Step-by-step explanation:

Make a proportion

We need 1 1/4, or 1.25 cups of sugar for 20 cookies, and we need x cups of sugar for 12 cookies

1.25/20=x/12

To solve, we need to get the variable,x, by itself. It is being divided by 12. To reverse this, multiply both sides by 12.

12(1.25/20)=(x/12)12

The 12s on the right will cancel, and we are left with

0.75=x

0.75 is equivalent to 3/4

So, 0.75 or 3/4 cups of sugar is needed to make 12 cookies

4 0
3 years ago
PLEASE HELP ALMOST DUE BRANILIEST AND 5 STARTS AND A THANKS PLSLSLSLSL
Tema [17]

Answer:

c=-72

mark me brainliest

6 0
3 years ago
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