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icang [17]
3 years ago
15

Either enter an exact answer in terms of pi or use 3.14 for pi and enter your answer as a decimal

Mathematics
1 answer:
Phantasy [73]3 years ago
4 0

Area of a circle with diameter 14.

That means the radius is r=7 and the area is of course πr²

Answer: 49π

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What is the slope of the line shown below.
rusak2 [61]

slope = (y2-y1)/(x2-x1)

(2,4)   (4,8)

 m= (8-4)/(4-2)

m = 4/2

m=2

Answer: 2

8 0
3 years ago
Read 2 more answers
△ABC ≅ △DEF, EF = x 2 - 7, and BC = 4x - 2.
Artist 52 [7]

Answer:

Therefore the value of x is 5.

Step-by-step explanation:

Given:

△ABC ≅ △DEF,

EF = x 2 - 7, and

BC = 4x - 2.

To Find:

the values of x. = ?

Solution:

△ABC ≅ △DEF      ........Given

If two Triangles are congruent then the Corresponding Parts of Congruent Triangles are Congruent.

∴ BC ≅ EF   ...................CPCTC

Substituting the values we get

4x-2=x^{2}-7\\x^{2}-4x-5=0

Now By Factorizing we get

x^{2}-5x+x-5=0\\x(x-5)+1(x-5)=0\\(x+1)(x-5)=0\\x+1=0\ or\ x-5=0\\x=-1\ or\ x=5\\x\ cannot\ be\ negative\\\therefore x=5

Therefore the value of x is 5.

8 0
3 years ago
Order these decimals greatest to least 0.2 ; -0.4 ; -4.5
Mice21 [21]
0.2,
-0.4,
-4.5
hope this helps
6 0
2 years ago
Factor the expression completely.<br> 7x - 4x2
GrogVix [38]

Answer:

x (7-4x)

factor x out of 7x-4x^2

8 0
2 years ago
Help please I will mark you as brainlyist!!!
Zielflug [23.3K]

Answer: 8

Step-by-step explanation:

8 0
2 years ago
Read 2 more answers
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