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2 years ago

What is the perimeter of a square

Mathematics

2 answers:

german2 years ago

6 0

P=4a this is the answer

777dan777 [17]2 years ago

5 0

Answer:

4*sides

Step-by-step explanation:

4*sides is the Answer

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In Mexico people use pesos for money. There are about 12.8 pesos in

aleksklad [387]

Answer:

a peso worth is 5 cent

Step-by-step explanation:

i hope thag helps so 5 all tye ways to 100

5 0

2 years ago

PLEASE HELP GUYS i am struggling so much, two questions

ankoles [38]

Answer: the equation of the standard parabola

1) $(y-6)^2 = 4 (x-1)$

The equation of the standard parabola

2) (x+5)^2 = 16(y-2)

Step-by-step explanation:

Explanation

Parabola:-

The set of points in a plane whose distance from a fixed point and a constant ratio to their corresponding perpendicular distance from a fixed straight line is a conic.

Let S be a fixed point and l be a fixed straight line from any point P,the perpendicular PM is drawn to the line 'l'

The locus of P such that $\frac{SP}{PM} = constant$
The fixed point 'S' is called the Focus.
The fixed line'l 'is called the directrix of the conic
The constant ratio is known as the eccentricity, denoted by 'e'
If e=1 , the conic is called a parabola

1) Step 1 :-

Given the focus S = (2,6) and directrix is x=0

we know that $\frac{SP}{PM}=1$

now cross multiplication , we get

$SP = PM$

squaring on both sides,we get

$SP^{2} = PM^2$

step 2:-

now using distance formula is

$\sqrt(((x_{2}-x_{1})^2+(y_{2} -y_{1} )^2)$

Given S =(2,6) and P(x,y) be any point on parabola

$SP^2 = (x-2)^2+(y-6)^2$ ........(1)

Now using perpendicular distance formula

let P(x , y ) be any point on the parabola

$\frac{ax_{1}+by_{1}+c }{\sqrt{a^2+b^2} }$

Given the directrix is x =0 and P(x,y) be any point on parabola

$PM^2 = \frac{x^2}{\sqrt{1}^2 }$ ......(2)

equating equation(1) and equation (2), on simplification

we get $(x-2)^2+(y-6)^2 = x^2$ .....(3)

apply $(a-b)^2 = a^2+ b^2+2 ab$

now the equation (3) is

$(y-6)^2 = 4 x-4$

now the standard form of parabola is

$(y-k)^2 = 4 a(x-h)$

Final answer:-

$(y-6)^2 = 4 (x-1)$

2) Explanation:-

step 1:

Given vertex of a parabola is A(-5,2) and its focus is S(-5,6)

here the given points of 'x'co- ordinates are equal

Therefore the axis AS is parallel to y- axis

now the standard equation of parabola

$(x-h)^2 = 4 a (y-k)$

now you have to find' a' value

Given vertex of a parabola is A(-5,2) and its focus is S(-5,6)

The distance of $AS = \sqrt{(-5-(-5)^2+(2-6)^2}$

on simplification we get a =4

Final answer :-

the vertex (h,k) = (-5,2) and a=4

$(x-h)^2 = 4 a (y-k)$

The standard parabola is $(x+5)^2 = 16 (y-2)$

5 0

3 years ago

State in interval notation -1 -10 |2x- 10| greater than or equal to 19

Elena-2011 [213]

no solution is the answer

7 0

3 years ago

Can you help plz I don’t get it

aleksklad [387]

The correct answer is A) x=3

What this picture demonstrates is 3 x’s on the left side and 9 ones on the right. So it says 3x=9. If you were to divide by 3, or multiply by 1/2, you’d have x=3.

Another way to think of it is by redrawing the picture. Each ‘x’ would get three “1’s” thus x=3

7 0

3 years ago

Help asap thank you

Alex777 [14]

1. The answer is $24
32x0.25= 8 32-8=24
2. The answer is $105
150x0.30=45 150-45=105
3. The answer is $52
80x0.35=28 80-28= 105
4. The answer is $59.25
14+25+40=79 79x0.25=19.75 79-19.75=59.25

8 0

3 years ago