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NikAS [45]
3 years ago
10

What is the area of a triangle whose vertices are D(3,3) , E(3,−1) , and F(−2,−5)? ?= Unit ^2

Mathematics
2 answers:
Thepotemich [5.8K]3 years ago
5 0
Length of DE = 3-(-1) = 4

SIDE DE is a vertical line 

horizontal distance between E and F is  3 - (-2) = 5

So the area of triangle DEF = 0.5 * 4 * 5 = 10 sq units
rosijanka [135]3 years ago
4 0
Hope this helps you!

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Suppose that an individual has a body fat percentage of 15.6% and weighs 156 pounds. How many pounds of his weight is
ella [17]

Answer:

Percent or percentage or

%

means "per 100" or "out of 100". Therefore

12.3

%

=

12.3

100

.

So 12.3% of 129 pounds is:

12.3

100

⋅

129

1586.7

100

15.867

hops this help ✨

6 0
2 years ago
Mary walks from corner D to corner E to corner F on a city block that measures 264 feet wide and 900 feet long. Kate walks diago
Kaylis [27]

Step-by-step explanation:

we have a rectangle, that is then cut in half diagonally into 2 right-angled triangles.

in our problem it does not matter which side is the larger and which is the shorter one, because the distance calculation for both cases involve one short and one long side. the sequence does not matter.

Mary walks one short and one large side to get to the opposite corner (from D to F) :

264 + 900 = 1,164 ft

Kate walks diagonally. and that diagonal is the Hypotenuse of the right-angled triangle with a short and a long side of the rectangle.

so, Pythagoras applies :

c² = a² + b²

with c being the Hypotenuse (the side opposite of the 90° angle), and a and b are the legs.

in our case that means

diagonal² = 264² + 900² = 69,696 + 810,000 =

= 879,696

diagonal = sqrt(879,696) = 937.9211054... ft ≈ 938 ft

so, Kate walked

1,164 - 938 = 226 ft

less than Mary.

4 0
1 year ago
In about how many seconds could a 9-year old boy run 100 meters?
Alexxandr [17]

Answer:

23 seconds if you are competitive

Step-by-step explanation:

7 0
2 years ago
A plane travels at a constant speed. It takes 6 hours to travel 3360 miles. A. What is the planes speed in miles per hour? B. At
NemiM [27]

Answer:

the plans can go 560 miles per hour and in 10 hours it can travel 5600 miles

Step-by-step explanation:

1st divide miles over hour so you have to do 3360/6 and the solution you get for that equation is how far the plane can go in miles per hour 2nd for the second question you have to multiply your unit rate by the 10 hours so since our unit rate was 560 miles per hour you would multiply 360 and 10.

4 0
3 years ago
Read 2 more answers
a country's population in 1992 was 169 million in 1999 it was 174 million estimate the population in 2010 using the exponential
ahrayia [7]
In 1992: t=0 and A=169 million
In 1999: t=7 and P= 174 million

Solve for k: blah blah blah

In 2010: t=18

The answer is : 182 million (trust me)
7 0
3 years ago
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