X=numbers of hammers
y=numbers of scewdrivers
f(x,y)= total cost in $
f(x,y)=11x+6.65y
f(4,7)=4(11)+6.65(7)=44+46.55=90.55
Sol: an expresion for the total cost of the tools is f(x,y)=11x+6.65 y;
x=number of hammers
y= number of scewdrivers.
The total cost is $90.55
Answer: 100
5
Step-by-step explanation:
a) The mean of a normal distribution is also the median. Half the population will have values above the mean. Half of 200 is 100, so ...
... 100 students will have grades above 70%.
b) 84% is 14% above the mean. Each 7% is 1 standard deviation, so 14% is 2 standard deviations above the mean. The empirical rule tells you 95% of the population is within 2 standard deviations of the mean, so about 5% of students (10 students) got grades higher than 84% or lower than 56%. The normal distribution is symmetrical, so we expect about 5 students in each range.
... about 5 students will have grades above 84%.
<u>Answer:</u>
g (h (x) ) = 5/8
<u>Step-by-step explanation:</u>
We are given the following two functions and we are to find the value of :
Firstly, we need to find the function :
Now substituting the value in it:
g (h (x) ) = 5/8
Answer:
Perimeter = 10 cm
Area = 6.25 cm²
Step-by-step explanation:
So to find the Perimeter of the square, we'll use this formula :
Hence, the perimeter would be 10 cm .
We know that the formula of Area to find the square is,
Note : The answer would always be in cm².
Hence, the area of the square would be 6.25 cm².
<em>We are done !</em>
I hope this helps!
Let me know if you have any questions.
:D
<span><span>23/40=0.575
Here you go</span></span>