Answer:
79.31%
Step-by-step explanation:
First we need to find the total number of students.
We do that summing all the four values in the table:
Total students = 2 + 18 + 3 + 6 = 29
Then, the students that play a sport or an instrument are all student but the ones that don't play both:
Students(sport or instrument) = 29 - 6 = 23
So the probability of a random student playing a sport or an instrument is 23/29 = 0.7931 = 79.31%
Answer:
Worked 40 hrs in week
Pay $300 for week
Step-by-step explanation:
Hours: 7-11a.m = 4
12-4p.m = 4 So, 4+4=8 hrs per day
So, 8 hrs per day × 5 days a week (8×5)=40
Worked 40 hrs in week
Pay: $7.50/hr So, $7.50×40 hrs (7.50×40)=300
So, $300 pay for week
Answer:
the value of x is 25 degrees
Step-by-step explanation:
Here, we want to get the value of x
we use an important triangle angular principle here
And the principle is that when we add two opposite interior angles, we get the value of the exterior angle on the third side
Thus, mathematically;
x + 75 = 4x
4x-x = 75
3x = 75
x = 75/3
x = 25 degrees
$108
270 × .40= 108
to find percentage, turn into a decimal and multiply
Answer:
Option B
Option C
Step-by-step explanation:
we need to divide the coefficient of x by half since it is required for completing square, this term is added and subtracted at the same time to keep the equation intact, so we have
later we have
we know
we have
or
so we have
finally
The second is obtained by summing the two given equations
f(x)=8x-10
g(x)=3x+5
-----------------
f(x)+g(x)=11x-5