MATHEMATICS HIGH SCHOOL

Solve. Check that your answer is reasonable. Paula's painting has a perimeter of 1.22 meters. She wants to put ribbon around the edge. If the ribbon comes in pieces that are 25 centimeters long, how many pieces of ribbon does she need to go all the way around her painting? Paula needs pieces of ribbon.

Answers

Answer 1

Answer:

Answer:

5 pieces

Step-by-step explanation:

Given:

Paula's painting has a perimeter of 1.22 meters.

She wants to put ribbon around the edge.

If the ribbon comes in pieces that are 25 centimeters long.

Question asked:

How many pieces of ribbon does she need to go all the way around her painting?

Solution:

Perimeter of painting = 1.22 meters

First of all we will convert it into centimeters:-

As we know:

1 meter = 100 centimeters

1.22 meters = 100 $*$ 1.22 = 122 centimeters

Now, as given that ribbon comes in pieces of 25 cm long and total we should have 122 cm to go all the way around the painting.

Number of pieces of ribbon will be needed = $(122)/(25) =4.88\$

Thus, she need 5 pieces of 25 cm long ribbon to go all the way around the painting.

Note:-This is by default understood that few length of 5th ribbon will be left over.

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Which two numbers add up to 5 and multiply to -45 ?

Answers

we have x+y=5
xy=-45
solve
x+y=5
subtract x from both sides
y=-x+5
subsiute -x+5 for y in second equaiton
x(-x+5)=-45
-x^2+5x=-45
add 2x^2-5x to both sides
0=x^2-5x-45
use quadratic equation which is
if you have 0=ax^2+bx+c then x= $\frac{-b+ \sqrt{b^(2)-4ac} }{2a}$ or $\frac{-b- \sqrt{b^(2)-4ac} }{2a}$
sbsitute
1x^2-5x-45
a=1
b=-5
c=-45
subsitute
$\frac{-(-5)+ \sqrt{-5^(2)-4(1)(-45)} }{2(1)}$
$(5+ √(25-(-180)) )/(2)$
$(5+ √(25+180) )/(2)$
$(5+ √(205) )/(2)$

or $\frac{5- \sqrt{} }{2}$ or aprox x=-4.65891 or 9.65891, so the 2 numbers would be those answers for x

Life me kbhi sad mt hona kitne log agree hai

Answers

Yes maybe but I don’t agree that

Find the slope of the line passing through the points ( -9, 3) and (6, 3)

Answers

Answer:

M=0

Step-by-step explanation:

You want to use the formula (y2-y1)/(x2-x1). To do this, subtract 3-3/6- -9 and that is your slope. So the slope is 0/15.

(15−x)∙4=10
pls pls answer asapppp

Answers

(15-12.5)*4=10

x=12.5

Help me solve this problem please

Answers

Answer:

Step-by-step explanation:

A garden is in the shape of a rectangle and has a perimeter of 58 yards. The length of the garden is 5 more than twice the width. Find the dimensions of the garden.

Answers

Let the width be w
Length= 2w+5
Perimeter= 2(length+width)
58=2(2w+w+5)
58=2(3w+5)
3w+5=29
3w=24
Width=8yards
Length=2(8)+5
=21yards

p= sum of the sides = 2l+2wopposite sides are the samex=width2x+5= length2x+ 2(2x+5)=58remove( )2x+ 4x+10=58combine like terms6x+10= 58subtract 10 from both sides6x=48divide by 6x=8 width2 x 8+5= 21 lengthhope this helps

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