Answer:
mean = 5+9+9+6+6+11+8+4/7 = 8.29
median = 6
mode = 6
range = 11 - 4 = 7
200- your age = your target heart rate.
Hence, for a 40 year old man, it’s 200-40= 160.
Hope this helps!
X=number of boys
y=number of girls.
We can suggest the following system of equations:
x+y=33
x/y=3/8
We solve this system of equations by substitution method.
x/y=3/8 ⇒x=3y/8
(3y/8)+y=33
least common multiple=8
3y+8y=33*8
11y=33*8
y=(33*8)/11
y=3*8
y=24
x+y=33
x+24=33
x=33-24
x=9
number of boys /total number of students=9/33=3/11
There are 9 boys and 24 girls in the class.
Answer: C: 9. since 3/11 of the students are boys.
Answer:
(3, 2)
Step-by-step explanation:
Point B has the x-coordinate 3 and the y-coordinate 2, as can be read of directly from the graph. Therefore Point B is (3, 2).
Answer: The volume is 90.47 
Step-by-step explanation:
1. To solve this problem you need to use the formula for calculate the density, which is shown below:
Where 
is the mass and 
is the volume.
2. You must solve for the volume, as following:
3. Now, you must substitute the values of the mas and the density, which are given in the problem. Therefore, you have:
