MATHEMATICS MIDDLE SCHOOL

A dinner plate has a diameter of20 centimeters. What is the circumference
of the plate?
Please help

Answers

Answer 1

Answer:

Step-by-step explanation:

first take out

radius from the given diameter using the logic I.e diameter is double of radius

than after that use the circumference of circle formula I.e 2 pie r

directly we can get circumference by

using formula

pied

I.e 22/7 × 20

and answer is 62.85

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Can 2 and 7/12 be simplify

Answers

no because 7/12 is already at it's lowest because 2 doesn't go in to 7 and 2 does go in 12 but u have to simplify it by the same number

hope this helps

katie has read 32% of a book. if she has read 80 pages, how many more pages does katie have left to read

Answers

x=total number of pages.
1)we calculate the total number of pages.
32% of x =80
(32/100)x=80
x=(80*100)/32
x=250.

2) we calculate the number of pages don´t read.
number of pages don´t read=250-80=170

Answer: 170 pages.

80/32% or 80/.32=250. 250-80=170 :)

PLEASE HELP MEDavid and Ronald both are making cubic gift boxes with varying volume. The side length of David's gift box for a given volume is given by the function below, where (x - 1) is the volume of the box, in cubic feet.

The side length, g(x), of Ronald's gift box for a given volume is shown in the table below, where x is the volume of the box, in cubic feet.

Whose gift box has the greater side length for a given volume?

Answers

Answer:

Option C Both gift boxes have the same length for a given volume

Step-by-step explanation:

step 1

David's gift box

Calculate the side length of the box for a given volume

we have

$f(x)=\sqrt[3]{x-1}$

For $(x-1)=2\ ft^(3)$ ------> $f(x)=\sqrt[3]{2}=1.26\ ft$

For $(x-1)=4\ ft^(3)$ ------> $f(x)=\sqrt[3]{4}=1.59\ ft$

For $(x-1)=6\ ft^(3)$ ------> $f(x)=\sqrt[3]{6}=1.82\ ft$

For $(x-1)=10\ ft^(3)$ ------> $f(x)=\sqrt[3]{10}=2.15\ ft$

therefore

Both gift boxes have the same length for a given volume

Answer:

The answer would be Ronald. Also this is for plato too.

Step-by-step explanation:

Please do these three and show work

Answers

Answer:

2)16.5

Step-by-step explanation:

step1:v/2.2 -0.1=7.4

add 0.1 on both sides

step2:v/2.2=7.5

multiply by 2.2 on both sides

step3:v=16.5

2) v/2.2 - 0.1 = 7.4

v/2.2 = 7.4 + 0.1

v /2.2 = 7.5

v = 7.5 * 2.2

v = 16.5

4) -1.3g + 1.9 = -11.1

-1.3g = -11.1-1.9

-1.3g = -13

g = -13/-13

g = 1

6) -14.3 = -1.4 -3d

-14.3 + 1.4 = -3d

-12.9 = -3d

3d = 12.9

d = 12.9/3

d= 4.3

Factor the polynomial below 20x^2-45

Answers

$20x^2-45=5(4x^2-9)=5[(2x)^2-3^2]=5(2x-3)(2x+3)\n\n--------------------------\n\nuse:a^2-b^2=(a-b)(a+b)$

$(a+b)(a-b)=a^2-b^2\n---------------------\n\n20x^2-45=5\cdot4x^2-5\cdot9=5\cdot(4x^2-9)=\n\n.\ \ \ \ \ \ \ \ \ \ \ \ =5\cdot[(2x)^2-3^2]=5\cdot(2x+3)(2x-3)$