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Aleks [24]
3 years ago
7

4. A couple has 4 children. What is the probability that they have at least 2 girls?

Mathematics
1 answer:
qwelly [4]3 years ago
4 0
6/16 or 3/8 unless you mean percentage
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Calculate the volume of water in the cup when it is full
maxonik [38]

To find:

The volume of the water in the cup when it is full.

Solution:

The volume of the water is equal to the difference of the volume of the small cone and the larger cone.

Here, the ratio of the radius of both cones is equal to the ratio of their heights. SO,

\begin{gathered} \frac{r}{2.7}=\frac{20}{20-8} \\ \frac{r}{2.7}=\frac{20}{12} \\ \frac{r}{2.7}=\frac{5}{3} \\ r=4.5 \end{gathered}

The radius of the larger cone is 4.5 cm.

So, the volume of the water is:

\begin{gathered} V=\frac{1}{3}\pi R^2H-\frac{1}{3}\pi r^2h \\ =\frac{1}{3}\pi(R^2H-r^2h) \\ =\frac{1}{3}\pi((4.5)^2(20)-(2.7)^2(12)) \\ =\frac{1}{3}\cdot\frac{22}{7}(405-87.48) \\ =\frac{22}{21}(317.52) \\ =332.64cm^2 \end{gathered}

The volume of water when the cup is full is 332.64 cm^2.

7 0
1 year ago
What benefit does a shielded twisted pair wires provide? A. reduces electric interference B. reduces insulation C. reduces flexi
anzhelika [568]

The extra covering in shielded twisted pair wiring protects the transmission line from electromagnetic interference leaking into or out of the cable. STP cabling often is used in Ethernet networks, especially fast data rate Ethernets.

( Not sure if this was helpful but)

4 0
4 years ago
A cube has a height of 50 yards. Find the surface area of the cube
Gelneren [198K]
The formula for the surface area is 6x^2.
The answer is 15000
7 0
3 years ago
Read 2 more answers
Help please ??????????????????????​
nexus9112 [7]

Answer:

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5 0
4 years ago
What is the y-intercept of the function described in the table?
lord [1]

Answer:

the y-intercept is 2.

Step-by-step explanation:

If you find the rate of change, which in this case is 1/-4, you can reverse the rate of change.

1 and -2

-1 (instead of adding 1) to x

+4 (instead of subtracting) to y

you get (0, 2).

Making the y-intercept 2.

3 0
3 years ago
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