What is the formula to find a surface area? PLZ help I have homework

Answers

Answer 1

Answer: The surface area for a rectangular prism....

A= 2(wl+hl+hw)

w=width

h=height

l=length

This is for a rectangular prism.

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Find the value of x2 − 7x + 9 when x = 6.

The value of the expression when x = 6 is

Answers

Answer:

-21.

Step-by-step explanation:

(6)2-7(6)+9

--> 6x2= 12

--> 7x6= 42

Rewrite the expression:

--> 12-42+9

Solve:

--> 12-42= -30

--> -30+7= -21

What is the volume of a cone that has a height of 7 mm and a radius of 3 mm? Use 3.14 to approximate pi and round the answer to two decimal places if necessary.___mm3

Answers

volume=1/3 times area of base (circle) times height

circle=3.14 times radius^2
circle=3^2 times 3.14
circle=9 times 3.14=28.26
times height (7)
197.82
times 1/3=65.94
answer is 65.94 mm^3

What is the answer of 9m-14= -8

Answers

$9m-14= -8 \ \ \ | +14 \n \n9m -14 + 14=-8+14 \n \n 9m = 6 \ \ /:9 \n \nm=(6)/(9)\n \nm=(2)/(3)$

$9m-14=-8$
$9m-14+14=-8+14$
$(9m)/(9)=(6)/(9)$
$x=(6)/(9)$

Write an equation in slope-intercept form for the line with slope 2 and y-intercept -6.

Answers

Answer:

gbhggghkrhbsbrk. r hbutb

Step-by-step explanation:

atekngijrwihO.fh

Answer:

y = 2x - 6 or y = 2/1x - 6

Step-by-step explanation:

Remember that the slope-intercept formula is y = mx + b. The "m" is always going to be the slope, and "b" is what the y-intercepts at. The slope could also be a fraction (meaning it rises up 2 and goes to the right 1). If you were to graph it using "2" as the slope, it would be done the same way.

I hope I didnt miss anything and that this helps! :)

Explain how to use a model to show 2/6 ÷ 1/12 and 2/6 ÷ 4

Answers

4/12 / 1/12 & 4/12 / 48/12 are how you make them equal, although i'm not sure about the rest

What is the solution to the linear equation? 6k + 10.5 = 3k + 12 k = 0.5 k = 2 k = 7.3 k = 9

Answers

The solution is K=0.5

The solution is K = 0.5

Other Questions

The following 3-D object is composed of identical cubes. The volume of the 3-D object is 56cm cubed. The surface area of the 3-D object is a) 30cm squaredb) 60cm squaredc) 120cm squaredd) 144cm squared

Round 2,605 to the nearest hundred

Wondering what the ANSWER was??

Can anyone help me? I don't understand this. can u also give the calculations please??