<h3>
Answer: 9/100</h3>
========================================================
Explanation:
There are 3 pink marbles out of 10 total (we can see that 2 yellow + 3 pink + 5 blue = 10 total)
The fraction 3/10 represents the probability of pulling out a pink marble at random. Since the first one is put back, this means the fraction 3/10 stays the same on the second draw as well.
We use the idea mentioned in the hint to multiply the fractions:
(3/10)*(3/10) = (3*3)/(10*10) = 9/100
The probability of pulling two pink marbles in a row is 9/100, where the first marble is put back.
Effectively, if you were given 100 tries at doing this, you should expect about 9 of those times you get 2 pink marbles in a row.
Answer:
b
Step-by-step explanation:
Answer:
C. Many of the people selected to participate in the survey who do not respond might have opinions different from those who do respond.
Step-by-step explanation:
The survey is said to be biased by non-response survey if many people did not respond to the survey this might be much affected the result of survey.
The reason that people might be refuse to participate in the survey that survey may include any embarrassing information, illegal activities or personal details so many people did not respond to the survey. Also these peoples has different opinion from other peoples who respond in the survey. Thus this cause biased.
Answer:
Equation of line l,
3x-4y=1/2
y=3/4x-1/2
we get,
slope of line l =3/4
Equation of line m,
x-5=2y
y=1/2-5/2
Hence slope of line m=1/2
Slope of line l is not equal to slope of line m. Hence the line are not parallel.
Slope of line l* slope of line m ,
(3/4)*(1/2) =3/8
Since the product of slope of line l and the slope of line m is not equal to -1, the lines are not perpendicular.
Hence the lines are neither perpendicular nor parallel..
Given:
The area of the circle = 78.5 squared cm
We know that:
so,
![\begin{gathered} \pi\cdot r^2=78.5 \\ \\ r^2=\frac{78.5}{\pi}=\frac{78.5}{3.14}=25 \\ \\ r=\sqrt[]{25}=5 \end{gathered}](https://tex.z-dn.net/?f=%5Cbegin%7Bgathered%7D%20%5Cpi%5Ccdot%20r%5E2%3D78.5%20%5C%5C%20%20%5C%5C%20r%5E2%3D%5Cfrac%7B78.5%7D%7B%5Cpi%7D%3D%5Cfrac%7B78.5%7D%7B3.14%7D%3D25%20%5C%5C%20%20%5C%5C%20r%3D%5Csqrt%5B%5D%7B25%7D%3D5%20%5Cend%7Bgathered%7D)
so, the radius of the circle = r = 5 cm
The diameter of the circle is two times the radius
So, the answer will be Diameter = 2 * 5 = 10 cm
