Answer:
The total number of students that ate lunch are 300 .
Step-by-step explanation:
Formula
As given
There are 4 lunch choices in a school cafeteria: Salad, Pizza, Spaghetti, and Sub Sandwiches.
The percentage of students that chose salad is 15%.
If 45 students chose salad.
Here
Percentage = 15%
Part value = 45
Put in the formula
Therefore the total number of students that ate lunch are 300 .
Answer:
f(3) = 10
Step-by-step explanation:
f(x)=-x^2+19
Let x= 3
f(x)=- (3)^2+19
= -9 + 19
= 10
Answer:
7pi/2
Step-by-step explanation:
Given the expression cosec x = -1
I'm trigonometry csecx = 1/sinx
The equation becomes
1/sin(x) = -1
Sinx = -1
x = arcsin(-1)
x = -90°
x is negative in the third and 4th interval
Third interval;
x = 180+90
x = 270°
x = 3pi/2
Since the angle should be within 3pi < x < 4pi
Add 2pi to the angle
x = 2pi+ 3pi/2
x = 7pi/2
Hence the required angle is 7pi/2
5.28 / 12 = 0.44 per oz
7.96 / 18 = 0.4422 rounds to 0.44 per oz
technically, by rounding to the nearest cent, they are the same cost.
This is the answer
if substitute 1 and 2 and 3 as x then the points will be :
and that's the picture
good luck
