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3 years ago

Se da triunghiul ABC isoscel , in care AB 2 lungimile de 5 cm respectiv 6 cm , calculati perimetrul ; sunt doua cazuri

Mathematics

1 answer:

morpeh [17]3 years ago

3 0

perimeter = the lengths of all 3 sides added together

so 5 + 5 +6 = 16 cm is the perimeter

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Miss Gonzales opened an account with a deposit of $2,000,

Nesterboy [21]

Answer:

i think its 18%

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2 years ago

Write a polynomial with the zeros equaling to -1,1,8

Andreyy89

Answer:x³-8x²-x+8

Step-by-step explanation:

x are equal to -1,1,8 respectively

to form the polynomials just simply use this method put (x-)to the given numbers that are zeros of the polynomials

(x-(-))(x-1)(x-8)

(x+1)(x-1)(x-8) →(x+1)(x-1) are diff. of two squares (x²-1)

(x²-1)(x-8)

x²(x-8)-1(x-8)

p(x)=x³-8x²-x+8

4 0

3 years ago

Mariela and Deborah go to the same school. Mariela lives 8 miles east of the school, while one person lives 12 miles south of th

Alik [6]

Just add it and then round

8+12=20 now round

7 0

2 years ago

I need someone to help me do this, see attached documents for the questions

Brilliant_brown [7]

Answer:

<u><em>1.) 20.2</em></u>

Step-by-step explanation:

1.) You need to use the distance formula:

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

Find the distance of A to B first:

$(-2,2)(3,2)\\\\\sqrt{(3+2)^2+(2-2)^2}\\\\\sqrt{(5)^2+(0)^2}\\\\\sqrt{25} =5$

B to C:

$(3,2)(-1,-5)\\\\\sqrt{(-1-3)^2+(-5-2)^2}\\\\\sqrt{(-4)^2+(-7)^2}\\\\\sqrt{16+49}\\\\\sqrt{65} =8.06=8.1$

C to A:

$(-1,-5)(-2,2)\\\\\sqrt{(-2+1)^2+(2+5)^2}\\\\\sqrt{(-1)^2+(7)^2}\\\\\sqrt{1+49}\\\\\sqrt{50}=7.07=7.1$

Add distances to find the perimeter:

$5+8.1+7.1=20.2$

2.) Part A:

You need to use the mid-point formula:

$midpoint=(\frac{x_{1}+x_{2}}{2} ,\frac{y_{1}+y_{2}}{2} )$

$(3,2)(7,11)\\\\(\frac{3+7}{2},\frac{2+11}{2})\\\\(\frac{10}{2},\frac{13}{2})\\\\m=( 5,6.5)$

Part B:

1. Use the slope-intercept formula:

$y=mx+b$

M as the slope, b the y-intercept.

Find the slope of the two points A and B using the slope formula:

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}} =\frac{rise}{run}$

Insert slope as m into equation.

Take point A as coordinates $(x,y)$ and insert into the equation. Solve for the intercept, b:

$(y)=m(x)+b$

Insert the value of b into the equation.

2. Use the mid-point coordinate. Take the slope.

If you need to find the perpendicular bisector, you will take the negative reciprocal of the slope. Switch the sign and flip it. Ex:

$\frac{1}{2} =-\frac{2}{1}=-2\\$

Insert the new slope into the slope-intercept equation as m.

Take the mid-point coordinate as (x,y) and insert into the equation with the new points. Solve for b.

Insert the value of b.

4 0

3 years ago

What is sams ratio of free to paid minutes

Scilla [17]

Well, if Pablo gets 1 free minute for every 5 paid,
then he would get 8 free minutes for every 40 paid,
Sam is getting only 25 paid minutes for every 8 free ones

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3 years ago