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cupoosta [38]
3 years ago
14

How do I work out this equation?

Mathematics
1 answer:
Annette [7]3 years ago
4 0
a_{11}=2\cdot11^2+3\cdot11-2=2\cdot121+33-2=242+31=273
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70 POINTS! PLEASE HELP! Explain the difference between the following equation formats: Slope-Intercept, Point-Slope and Standard
katrin2010 [14]

Answer and Step-by-step explanation:

1.  slope intercept

2.  point-slope form

3.  standard

Explanation:

1.   A <u>slope intercept form</u> equation is when it's set up as y = m x + b

m = slope  

b = y-intercept

2.   <u>A point-slope form</u> is when a line passes through a point

and the equation is set up as  y −b = m ( x−a)

m = slope

(a, b) A point that the line passes through

3. <u>standard lope form</u> is when the equation is set up as

Ax + By = C

7 0
3 years ago
#3 The sales tax on a $20 shirt was 9%.
d1i1m1o1n [39]

Answer:

$1.80

Step-by-step explanation:

20 x 0.09 = 1.8

8 0
3 years ago
Geometry. Very basic.
AveGali [126]

Answer:

A)10.25 cm ; B)5 square cm  

Step-by-step explanation:

A)

Formula:

p=(a+b+c)         [p= perimeter ;  a,b , and c are the side lengths.]

∴The perimeter of the triangle =(4+2.75+3.5) cm  

                                                =10.25 cm

B)

Formula:

A = 1/2 . b .h    [A=area ; b= base ; h= height]

∴The area of the triangle = (1/2 . 4 . 2.5) square cm    [b=4 ; h=2.5]

                                         =5 square cm  

6 0
3 years ago
A light bulb consumes 3120 watt-hours in 3 days and 6 hours. How many watt-hours does it consume per day?
matrenka [14]

2850*24/(4*24+18)

The light bulb consumes 600 watt-hours per day.

6 0
3 years ago
Manny has a garden that is 12 feet long and 9 feet wide. What is the perimeter of
Julli [10]

Answer:

42 ft

Step-by-step explanation:

2(L + W ) = P

2 (12 + 9) = P

2 (21) = P

42 = P

P = 42

4 0
2 years ago
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