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maw [93]
3 years ago
11

Find the area of ΔDEF to the nearest tenth. ANSWERS: A) 127.8 square units B) 46.5 square units C) 63.9 square units D) 23.3 squ

are units

Mathematics
1 answer:
Elina [12.6K]3 years ago
5 0

Answer:

C) 63.9 square units

Step-by-step explanation:

From the above diagram, we can see that the triangle has 2 sides and and angle

The formula for the area of a triangle that has 2 sides and an angle = 1/2absinθ

θ = 70°

a = DE = 8 units

b = EF = 17 units

Area of ΔDEF = 1/2 × 8 × 17 × sin 70°

Area of ΔDEF = 63.9 square units.

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Which expression is equivalent to One-fifth (150 x minus 80 y + 50 minus 50 x minus 25 y + 20)?
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Answer:

The answer to your question is  20x + 21y + 14        

Step-by-step explanation:

Data

Expression             1/5 (150x - 80y + 50 - 50x - 25y + 20)

Process

1.- Multiply 1/5 by each term

                                     150/5x - 80/5y + 50/5 - 50/5x - 25/5y + 20/5

2.- Simplify

                                      30x - 16y + 10 - 10x - 5y + 4

3.- Simplify like terms

                                      (30x - 10x) + (-16y - 5y) + (10 + 4)

4.- Result

                                        20x + 21y + 14                                        

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3 years ago
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What is (5^-2)^3 in standard form? Please answer!
Marina86 [1]
(5^-2)= (1/5^2)... (1/25) now cube that so it will be 1/15625. Hope that helps
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The equation the quantity of x plus 20 over 2 = 3x represents when two tutoring services with different rate plans charge the sa
victus00 [196]

The solution to the equation is x = 4

<h3>What are linear equations?</h3>

Linear equations are equations that have constant average rates of change. Note that the constant average rates of change can also be regarded as the slope or the gradient

<h3>How to determine the solution to the system?</h3>

A system of linear equations is a collection of at least two linear equations.

In this case, the equation is given as

(x + 20)/2 = 3x

Multiply both sides of the equation by 2

x + 20 = 6x

Subtract x from both sides of the equation

5x = 20

Divide both sides of the equation by 5

x = 4

hence, the solution to the equation is x = 4

Read more about equations at:

brainly.com/question/2972832

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1 year ago
Aaliyah made a deposit into an account that earns 6% annual compound interest. After two years the value of account was $11,236.
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Answer:

434444

Step-by-step explanation:

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3 years ago
(these are the rest) May i get more help please :( thank you :)
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Answer:

7. a = 1,075 sq ft

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