The area of a paralellogram is bh

each dimention is multiplied by n
b turns to bn
h turns to hn

bh turns to (bn)(hn) or bnhn or bhn²

expression is bhnn or bhn² or bhn^2 (depends if the program will let you enter the exponent)

6 0

3 years ago

Please explain this answer ☹️

GuDViN [60]

Answer:

see explanation

Step-by-step explanation:

Note that cos315° = cos45° and sin315° = - sin45° and

cos45° = sin45° = $\frac{1}{\sqrt{2} }$ = $\frac{\sqrt{2} }{2}$

Hence

12(cos315° + isin315°)

= 12(cos45° - isin45°)

= 12( $\frac{\sqrt{2} }{2}$ - i $\frac{\sqrt{2} }{2}$ )

= 6 $\sqrt{2}$ - 6i $\sqrt{2}$

7 0

3 years ago

The height H metres of a ball projected upwards t seconds after being projected is given by H=64t - 16t². Find it's initial velo

nordsb [41]

Answer:

initial velocity = 64 m/s

Step-by-step explanation:

Differentiate H = 64t - 16t² to find an equation for velocity:

Velocity = $\frac{dH}{dt}$ = 64 - 32t

Initial velocity (u) is when t = 0:

u = 64 - 32(0)

⇒ u = 64 - 0

⇒ u = 64 m/s

4 0

2 years ago

How many outcomes are possible when choosing a vowel and choosing a card suit (spades, clubs, hearts or diamonds)?

Vilka [71]

There are six vowels and 4 card suits
Each vowel can pick from 4 suits so 4*6=24
24 outcomes

7 0

3 years ago