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nadezda [96]
2 years ago
8

Area of a rectangle Equation

Mathematics
2 answers:
Pavel [41]2 years ago
5 0
Area of rectangle =2(length+width)

Therefore, equation is A=2(l+b)
Jet001 [13]2 years ago
4 0
Area = Length x width
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What is f(4) for the function f(x) = 7x +3? f(4) = ?​
Andre45 [30]

Answer:

72

Step-by-step explanation:

4 0
2 years ago
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Whats the least common multiple of 18 and 42?
wlad13 [49]
The least common multiple of 18 and 42 is 126. Sorry I don't know how to explain it.
6 0
3 years ago
10.The function f(x) is shown below:
Tom [10]
A. -f(1)=1,f(2)=2,f(n)=2f(n-1)f(n-2);n>2
7 0
3 years ago
The equation x ^ 2 - 2x + y ^ 2 - 4y = 20 defines a circle in the xy-coordinate plane What is the radius of the circle?
Helga [31]

Answer:

I'll set up the problem and you can do the calculation

Step-by-step explanation:

we need to complete the squares to get the equation in the general form:

{(x - h)}^{2}  +  {(y - k) }^{2}  =  {r}^{2}

where h = the x coordinate of the center

k = the y coordinate of the center

r = the radius

so looking at

{x}^{2}  - 2x

we can see that if use -1 as the constant we have

{(x - 1)}^{2}  =  {x}^{2}  - 2x   + 1

doing the same for y

{y}^{2}  - 4y

we can use -2 as the constant (basically you that the s

quare of the y coefficient )

{(y - 2)}^{2}  =  {y}^{2}  - 4y   + 4

so now we have to add or subtract the constant on the RHS to see what the square of the radius is according to the general form of the equation at the top

20 +1+4=25

Take the square root and you have the radius

4 0
3 years ago
Please help with these math questions
anastassius [24]
4) x=16
Vertical angles have equal angles when two lines intersect, which they do in this case. 
3x-3=2x+13
Solve for x:
x=16

5) 34 degrees
Lines AK and MJ bisect each other perpendicually, so <ADJ is 90 degrees. 
4x+3x-8=90
7x-8=90
7x=98
x=14
<CDJ=3x-8
=3(14)-8
=34 degrees

Hope this helps :)

6 0
3 years ago
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