Answer:
48+14i
Step-by-step explanation:
So squaring (i+7) looks like this
(i+7)^2
(i+7)(i+7)
Use foil.
First: i(i)=i^2=-1
Outer: i(7)=7i
Inner: 7(i)=7i
Last: 7(7)=49
____________Add the terms.
48+14i
banana: 5*$0.8=$4
apple: 5*$1.4 = $7
4+7=11
so Janice's mother gave $1 less than needed
Answer:
see attached
Step-by-step explanation:
The vector difference u -v can be represented on a vector diagram by the sum u +(-v), where -v is a vector the same length as v, but in the opposite direction.
__
This sum is shown in the attachment.
Answer:
16
Step-by-step explanation:
he missed 25%
if 4 = 25% then 16 questions total
4*4=16 and 25% * 4 = 100%
Answer:

Step-by-step explanation:
It is given that:

<u>Formula to be used:</u>

Using Formula (1) written above:

Now, using Formula (2) written above:

So, we can say that:

We have to find the value of
.
Using Formula (3) written above:

So, ultimately we need to find the value of 
Using equation (1):

So, the answer is
.