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Vikentia [17]
2 years ago
9

Given DE is a mid segment of triangle ABC

Mathematics
1 answer:
Dovator [93]2 years ago
3 0

Answer:

‎

Step-by-step explanation:

‎

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Find the area.<br> 11 cm<br> 8 cm<br> 7 cm
HACTEHA [7]
66.5cm

Split the shape into a square and triangle and find the area separately

Square: 8*7=57
Triangle: 7*3/2 = 10.5
=66.5

7 0
3 years ago
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using a regression calculator, what is a good prediction for the height of the tree when it is 100 years old?
mylen [45]

Correct Question:

Tim is investigating the relationship between the number of years since a tree was planted and the height of the tree in feet. His data are shown in the table. Years Since Tree was Planted vs. Height of Tree

Years since the tree was planted, x

Height of tree in feet, y

2, 17, 3, 25, 5, 42, 6, 47, 7, 54, 9, 69

Using a regression calculator, what is a good prediction for the height of the tree when it is 100 years old?

Answer/explanation:

There is no good prediction for the height of the tree when it is 100 years old. If you analyze careful in details the regression calculator you realize that it probably will not valid that far in to the future say 100 years.

6 0
3 years ago
429 is 4 hundreds 29
MaRussiya [10]

Answer: yes

Step-by-step explanation: because that how many times it could go in too it

3 0
3 years ago
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For f(x)=1/x^2-3, find<br> a) f(3)<br> b) f(2+h)<br> Show/explain work
valentina_108 [34]

f(x)=\dfrac{1}{x^2-3}\\\\a)\ f(3)\to\text{put x=3 to the equation of the function f}\\\\f(3)=\dfrac{1}{3^2-3}=\dfrac{1}{9-3}=\dfrac{1}{6}\\\\Answer:\ \boxed{f(3)=\dfrac{1}{6}}\\\\b)\ f(2+h)\to\text{put x=2+h to the equation of a function f}\\\\f(2+h)=\dfrac{1}{(2+h)^2-3}\ \ \ |\text{use}\ (a+b)^2=a^2+2ab+b^2\\\\=\dfrac{1}{2^2+2(2)(h)+h^2-3}=\dfrac{1}{4+4h+h^2-3}=\dfrac{1}{h^2+4h+1}\\\\Answer:\ \boxed{f(2+h)=\dfrac{1}{h^2+4h+1}}

6 0
3 years ago
All roses in a certain arrangement are red or yellow. If the ratio of red roses to the number of yellow roses is 1/2, each of th
kondaur [170]
A) 6
B)10
C)12
D)18
E)24

Awnser is C
4 0
3 years ago
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