Is 2/3 greater than 7/8

Answers

Answer 1
Answer: No because 2/3= .66 and 7/8= .875

Answer 2
Answer: No bc if you cross multiply it would show you that 7/8 is greater

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Y is directly proportional to the positive square root of x.When x = 9, y = 12.Find y when x = 1/4
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Find the area of the rectangle polynomial​

Answers

Answer:

\Longrightarrow: \boxed{\sf{8x^2+12x-8}}

Step-by-step explanation:

Using the distributive property, you multiply by the area to find the area of the rectangle polynomial.

: \Longrightarrow \sf{(Area)= (2x+4)*(4x-2)}

Solve.

(2x+4)*(4x-2)

Multiply by expand.

Use the distributive property.

Distributive property:

⇒ A(B+C)=AB+AC

Use the FOIL method.

FOIL method:

\Longrightarrow: \sf{\left(A+B\right)\left(C+D\right)=AC+AD+BC+BD}

\Longrightarrow: \sf{2x\cdot \:4x+2x\left(-2\right)+4\cdot \:4x+4\left(-2\right)}

\Longrightarrow: \boxed{\sf{=8x^2+12x-8}}

  • Therefore, the correct answer is 8x²+12x-8.

I hope this helps! Let me know if you have any questions.

hello,

Area =(2x + 4) * ( 4x - 2) \n Area =8 {x}^(2)  - 4x + 16x - 8 \n Area = {8x}^(2)  + 12x - 8

\boxed{crsjr}

What is 20 5/81 in simplest form

Answers

20 5/81 in its simplest form is 20 5/81.

20 5/81 originally looks like this ⇒ 1625/81

((20 * 81)+5)/81 = (1620+5)/81 = 1625/81   * this is an improper fraction because the numerator is greater than the denominator. Improper fractions must be converted to proper fractions. It will then become a mixed fraction.
 
       0020  5/81        
81 | 1625
       162            * 81 x 2
           05

Tell if it wrong or right and help me in the last one if its wrong solve it

Answers

E is wrong. It only says twelve but it is a square and squares have the same side so u would really do twelve times twelve and get 144. And also I got 360 on the challenge one because u would split the irregular figure and you would do ten times nine equals ninety then nine times thirty equals 270. Then add it and you old get 360 m2
ok i'll help u
c is wrong
and the rest are right

Olivia orderd 5 books online each book weighed 2 1/3.what is tge total weight altogether

Answers

11 2/3, I think. 2*3 + 1 = 7 & 7/3*5/1 (where you do straight multiplication) you get 35/3 which simplifies to 11 2/3. Hope this helped, but um what is the weight measurement or is that not mentioned?
Weight of each book = 2 ⅓ = 7/3

Weight of 5 books = 5 × 7/3
= 35/3

If 3x+2y =12 and xy=6, then find the value of 9x^(2) + 4y^(2)

Answers

xy=6
x=6/y......1
3x+2y=12
from1
3*(6/y)+2y=12
{after solving}2y^2-12y+18=0
y^2-6y+9=0      {taking y common}
y^2-3y-3y+9=0
y(y-3)-3(y-3)=0
y=3,3............2
putting 2 in 1
x=2.........3

9x^2+4y^2=
from 2 and 3
9*4+4*9=36+36=72




3x+2y=12\n (3x+2y)^2=144\n 9x^2+12xy+4y^2=144\n\n 9x^2+4y^2=144-12xy\n 9x^2+4y^2=144-12\cdot6\n 9x^2+4y^2=144-72\n \boxed{9x^2+4y^2=72}

PLEASE HELP ME! How do you factor out the coefficient of a variable?? Example: 5c - 15

Answers

divide both by a number that can go into both terms so it will be 5 . 
(5c-15)/(5) which is 5(c-3)
5c-15=\n5(c-3)