MATHEMATICS MIDDLE SCHOOL

Please answer a fast as possible!!! 50 points and I will choose brainliest answer!!!

The cube has a volume of 27 inches. find the volume of a scaled image with a scale factor of 2.

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Answers

Answer 1
Answer: Well 3*2 = what   , = 6 , this means that 6 is the new side length of the new scaled figure.
 
V = a * a * a . Where a is the side length ,
 
this means that we now have  V = (6)*3  |   now simplify .

This should equal  216  says most people | you should at lease get 54

I really hope that I helped you out a lot. Have a nice day.

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Bill drew a rectangle with a perimeter of 16 inches. Then he drew a square with the perimeter of 16 inches. draw three different rectangles bill could have drawn
What is 100 increased by 99%

7^2*3.14*a=1077.02
What is a?

Answers


A =7

7^2*3.14*7 sorry I did the equation wrong at first


7^(2) * 3.14 * a =1077.02
49 * 3.14 * a =1077.02
153.86 * a =1077.02
153.86 / 1077.02 = 7
a=7

Bill's living room floor is covered with carpet tiles. Each tile is 1 1/2 feet long by 2 3/5 feet wide. What is the area of one tile?

Answers

The area is found by multiplying the width and the length together.
1 1/2=3/2
2 3/5=13/5
(3/2)(13/5)=39/10
Answer: 3 9/10
4.1 because if you turn both 1/2 and 3/5 into decimals and add them to your whole numbers then multiply them you get your answer

(15x2 – 24x + 9) ÷ (3x – 3)

Answers

\bf 15x^2-24x+9/ 3x-3\implies \cfrac{15x^2-24x+9}{3x-3}\implies \cfrac{\underline{3}(5x^2-8x+3)}{\underline{3}(x-1)}\n\n\n\cfrac{5x^2-8x+3}{x-1}\implies \cfrac{(5x-3)\underline{(x-1)}}{\underline{(x-1)}}\implies 5x-3

What is the volume of a cube with edge length 2/3

Answers

Side = 2/3 cm
Volume of cube = (side)^3
                          = (2/3)^3
                          = (2*2*2)/(3*3*3))
                          = 8/27
                          = 0.296 cm^3
                     
well all you do is length*width*height so all you do is multiply all of them

Mrs. ciampa had 27 students In her class last year and this year she had 30 students in her math class. What is the percent of change?

Answers

The percent of change in the class of Mrs. Ciampa who has 27 students In her class last year and 30 students this year in her math class is 11.11%.

What is percentage increase ?

Percentage increase is the amount added to the initial value in the percentage part.

Mrs. Ciampa had 27 students In her class last year. This year she had 30 students in her math class.

Thus, the percentage change or increase of the student in her class is,

p=(30-27)/(27)*100\np=11.11\%

The percent of change in the class of Mrs. Ciampa who has 27 students In her class last year and 30 students this year in her math class is 11.11%.

Learn more about the percentage increase here;

brainly.com/question/2085058

Answer:

10%

Step-by-step explanation:

3 more students this year

3/30 reduced= 1/10 or 10%

How do I solve this?

Answers

area=LW
perimiter=2(L+W)

aera=36
P=25

36=LW
25=2(L+W)


25=2(L+W)
divide both sides by 2
12.5=L+W
minus W
12.5-W=L

sub for L
36=W(12.5-W)
36=12.5W-W^2
minus (12.5W-W^2) both sides
0=W^2-12.5W+36
use quadratic formula

if you have
ax^2+bx+c=0
x=\frac{-b+/- \sqrt{b^(2)-4ac} }{2a}

a=1
b=-12.5
c=36

W=\frac{-(-12.5)+/- \sqrt{(-12.5)^(2)-4(1)(36)} }{2(1)}
W=(12.5+/- √(156.25-144) )/(2)
W=(12.5+/- √(12.25) )/(2)
aprox
W=8 or 4.5

sub
12.5-W=L


12.5-8=L=4.5
12.5-4.5=L=8
either way

the dimentions are 4.5cm by 8 cm
\sf\nP=2L+2W=25 \sf\nA=LW=36\n\nFind\ the\ value\ of\ one\ of\ the\ variables\ in\ terms\ of\ the\ other. \sf\n36=LW\nW= (36)/(L)\n\nSubstitute.\nP=25\n=2L+2W\n=2L+2( (36)/(L) )\n=2L+ (72)/(L) \n\nMake\ them\ have\ a\ common\ denominator.\n2L+(72)/(L)\n= (2L)/(1) +(72)/(L)\n=(2L^2)/(L)+ (72)/(L) \n= (2L^2+72)/(L) \n\nMultiply\ L\ on\ the\ other\ side.\n25L=2L^2+72\n0=2L^2-25L+72\n\nUse\ the\ quadratic\ formula.\n L=\frac{-b+/- \sqrt{b^(2)-4ac} }{2a}\nax^2+bx+c
a=2\nb=-25\nc=72\n\n L=\frac{-(-25) +/- \sqrt{(-25)^(2)-4(2)(72)} }{2(2)} \n =(25+/- √(625-576) )/(4) \n =(25+/- √(49) )/(4)\n =(25(+/-)7)/(4) \n\n\sf\ We\ now\ have\ two\ options.\n(1) L=(25+7)/(4)= (32)/(4) =8\n(2)L=(25-7)/(4)= (18)/(4) =4.5\n\n\sf\ Either\ W\ is\ 8\ and\ L\ is\ 4.5\ or\ W\ is\ 4.5\ and\ L\ is\ 8.\ It\ doesn't\ matter.\n\n{\boxed{The\ dimensions\ are\ 8\ cm\ by\ 4.5\ cm.}
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