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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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Simultaneous EQUATION 3x+2y=16 2x+y=9 PLS HELP I need answer quickly
Serggg [28]

Answer:

(2, 5 )

Step-by-step explanation:

Given the 2 equations

3x + 2y = 16 → (1)

2x + y = 9 → (2)

Multiplying (2) by - 2 and adding to (1) will eliminate the y- term

- 4x - 2y = - 18 → (3)

Add (1) and (3) term by term to eliminate y

- x = - 2 ( multiply both sides by - 1 )

x = 2

Substitute x = 2 into either of the 2 equations and solve for y

Substituting into (1)

3(2) + 2y = 16

6 + 2y = 16 ( subtract 6 from both sides )

2y = 10 ( divide both sides by 2 )_

y = 5

solution is (2, 5 )

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3 years ago
Write a linear equation in Slope-Intercept Form for a line that goes through the
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Answer:

-2x-9=y

Step-by-step explanation:

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3 years ago
Which pair of triangles is congruent?
artcher [175]

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A

Step-by-step explanation:

7 0
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Read 2 more answers
The next model of a sports car will cost 11.2% less than the current model. The current model costs $36,000. How much will the p
Tanzania [10]

Answer:

The decrease in the price will be $4032

The price of the next model is $31968

Step-by-step explanation:

The current model costs $36,000.

The next model of a sports car will cost 11.2% less than the current model

So, decrease in price =11.2\% \times 36000

                                   =\frac{11.2}{100} \times 36000

                                  =4032

So, the price of next model decrease by $4032

So, the price of the next model= 36000-4032 =31968

Hence the price of the next model is $31968

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3 years ago
What is 41687 rounded to the nearest Highest Place
erik [133]

Answer:

40,000

Step-by-step explanation:

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