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3 years ago

14

Triangle DAN has coordinates D(-10,4), A(-4,1), and N(-2,5) Using coordinate geometry, prove that triangle DAN is a right triang

le.

1 answer:

inn [45]3 years ago

8 0

Answer:

75

Step-by-step explanation:

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Can someone please help me out! and please explain your answer, and how you got it right! thank you so much!

Contact [7]

It is

$24x - 30$

The equation for area of a trapezoid is

$\frac{1}{2} (a + b) \times h$

Substituting our values in

$\frac{1}{2} (3x + 7 + 5x - 3) \times 6$

We can then simplify the expression

$\frac{1}{2} (8x - 10) \times 6 \\ (4x - 5) \times 6 \\ 24x - 30$

8 0

3 years ago

8x - 3(2x - 4) = 3(x-6)

solong [7]

Answer:

X=30

Step-by-step explanation:

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3 years ago

Use complete the square to solve 5x²-7x-3=0

Yuki888 [10]

Step-by-step explanation:

ax2 + bx + c = 0

x12 = (-b ± √D) / 2a , D = b2 - 4ac .

5x2 + 7x + 3 = 0

a = 5 , b = 7 , c = 3

D = 49 - 60 = - 11 , x1 = (-7 - i √11) / 10

x2 = (-7 + i √11) / 10

3 0

3 years ago

Read 2 more answers

A half-Dollar has a diameter of about 31 millimeters. About how many millimeters long would a row of 56 half-dollars be?

Galina-37 [17]

Multiply 31 mm by 56:

56(31 mm) = 1736 mm (answer)

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3 years ago

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Abigail and her mom are back-to-school shopping at new Navy . Select items are on sale at 43% off their regular price . What is

vaieri [72.5K]

Answer:

$12.54

Step-by-step explanation:

First, you have to apply the sale to the original price. In this case, you would have to multiply 22 and 43% to get $9.46. Now, you have to subtract 9.46 from 22 to get 12.54.

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3 years ago