Answer:
1043ft
Step-by-step explanation:
1 roll of blue streamer is 94 ft long
1 roll of green streamer is 89ft long
She has 5 rolls of blue streamer and 7 rolls of green streamer.
If 1 blue roll has a length of 94ft, 5 rolls will have a length of 5 × 94
If 1 green roll has a length of 89ft, 7 rolls will have a length of 7 × 89
The total feed of streamer she has to decorate with is calculated as follows:
(5 × 94)ft + (7 × 89)ft = 470 + 623 = 1043ft.
Answer:
2
Is an easy one from kindergarten
Cosine is co added onto sine. Basically, cosine is the sine function moved over 90degrees or pi/2 (pi/2 on a unit circle is 90 degrees)
Sin(x)=cos(x+90) <--degrees
Sin(x)=cos(x+pi/2) <--radians
The above two equations for converting them is called a cofunction identity. There's many more identities to convert sines, cosines, tangents, cosecantes, secantes, and cotangents between each other. This is taught to you in PreCalculus.
Answer:
The combined average is 94%
Step-by-step explanation:
for first period, number of students =40
average =96%
for second period, no of students =20
average =90%
but
let
=sum of students for the first period
=sum of students for the second period
for first period;


for second period,


therefore the combined average = 
that is

so combined average is 94%
Step-by-step explanation:
There can be a lot of math expressions that may equal 13. Here are some of the expressions that equal 13.
Now, let us consider some interesting expression

If the value of x = 2, then the expression will be equal to 13.
i.e.
∵ when x = 2
Considering a word problem
<em>'Tom has 10 oranges while Tony has 3 more oranges than Tom. How many oranges Tony has?</em>
Let 'x' be the number of oranges Tom has.
The number of oranges Tony has = x + 3
as Tom has 10 oranges, so x = 10
Therefore, the number of oranges Tony has = x + 3
= 10 + 3 = 13
Therefore, the number of oranges Tony has = 13