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nikklg [1K]
2 years ago
14

D(5, 7), E(4, 3), and F(8, 2) form the vertices of a triangle. What is m∠DEF? A. 30° B. 45° C. 60° D. 90°

Mathematics
1 answer:
viva [34]2 years ago
4 0
D hope this helps man
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I don't know number 10
yulyashka [42]
78500 is ur answer : ) : ) : )
3 0
3 years ago
nickel has an approximate diameter of 20 mm and an approximate thickness of 2 mm what is the approximate volume of a stack of 40
ziro4ka [17]

Answer:

The approximate volume of a stack of 40 nickels is 25132.741 cubic milimeters.

Step-by-step explanation:

A nickel can be modelled by the formula of a right cylinder, the approximate volume of the stack of nickels (V_{net}), measured in cubic milimeters, is the product of the number of elements (n), no unit, and the volume of each element (V), measured in cubic milimeters. That is:

V_{net} = n\cdot V (1)

By volume equation of right cylinder, we have the following formula:

V_{net} = \frac{\pi}{4}\cdot n \cdot D^{2}\cdot h (2)

Where:

n - Amount of nickels, no unit.

D - Diameter of nickel, measured in milimeters.

h - Thickness of nickel, measured in milimeters.

If we know that n = 40, D = 20\,mm and h = 2\,mm, then the net volume of the stack of nickels is:

V_{net} = \frac{\pi}{4}\cdot (40)\cdot (20\,mm)^{2}\cdot (2\,mm)

V_{net} \approx 25132.741\,mm^{3}

The approximate volume of a stack of 40 nickels is 25132.741 cubic milimeters.

8 0
2 years ago
Enter the number that belongs in the green box.
ale4655 [162]

Answer:

the green box is 0

Step-by-step explanation:

we are asked to find the <u>x-intercept</u>, which means y = 0

(x, y)

Another way to test this is plug it in 1 for x!  (1, y) where x = 1

y = \frac{2x^{2} -3x+1}{2x^{2} +8x+6} \\\\

y = \frac{2(1)^{2} -3(1)+1}{2(1)^{2} +8(1)+6}

y = \frac{2(1) -3(1)+1}{2(1) +8+6}

y = \frac{2 - 3 + 1}{2 + 8 + 6}

y = \frac{-1+1}{10 + 6}

y = \frac{0}{16}

y = 0

6 0
1 year ago
Mrs Lanes laptop stays on for 6 hours without being plugged in and Mr Trevor's laptop stays plugged for 400 minutes who's laptop
o-na [289]
Mr. Trevor's laptop as he has 400 minutes compared to Mrs Lanes 360 minuted.(6x60=360). So, Mr. Trevor had a total time of 6 hours and 40 minutes.
6 0
3 years ago
The sum of two consecutive positive integers is 71 find the two positive integers
Veronika [31]
Let the first number be x. The next number will be x+1 since the two numbers are consecutive.

So, the equation is x + x+1 = 71

2x+1 = 71

2x = 70

x = 35

So, the first number is 35.

To find the next number, add 1 to 35.

So, the answers are 35 and 36.
8 0
3 years ago
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