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NARA [144]
3 years ago
5

Suppose you like to keep a jar of change on your desk. Currently, the jar contains the following: 2323 Pennies 55 Dimes 2020 Nic

kels 1919 Quarters Copy Data What is the probability that you reach into the jar and randomly grab a dime and then, without replacement, a nickel
Mathematics
1 answer:
GaryK [48]3 years ago
7 0

Answer:

The answer is "0.081"

Step-by-step explanation:

Dimes = 55

Calculating total coins = (23+55+20+19) = 117

P(for a dime) = \frac{55}{117}

Calculating remaining coins = 116

Nickels = 20

P(for nickel draw in second) = \frac{20}{116}

P(for a dime after that a nickel, without replacement)

= \frac{55}{117} \times \frac{20}{116} \\\\=  \frac{1100}{13572} \\\\=0.081

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7 0
3 years ago
5. A solid has a circle of radius r as its base. All sections of the solid perpendicular to the diameter along the x-axis are is
AleksandrR [38]

Answer:

 \frac{16r^3}{3}

Step-by-step explanation:

In this cross sections problem, we can integrate from -r to +r (so that the integral covers the entire base of the solid).

\int\limits^r_a {2(x^2+r^2 )} \, dx

The formatting for the integral did not let me put -r on the lower bound, so i replaced it with a, just know that a represents -r here.

Evaluating the integral gives use that it is equal to;

\frac{16r^3}{3}

Caution: this answer may not meet your needs, but this is the answer I have come up with with the given information.

If you found this answer helpful please consider leaving 5 stars, giving it a like, or if you asked this question, mark this answer as Brainliest. Thanks!

4 0
3 years ago
A survey showed that 4 out of 5 students own a bicycle. Based on this result, how many of the 800 students in a school own a bic
Stella [2.4K]

Answer:

640 students own a bicycle

Step-by-step explanation:

The rate shows that 4 out of 5 students own a bicycle. 4 out of 5 is 80% of the students. Now, we need to find 80% of 800 students.

To do this, we multiply the number of students by .80, which represents 80%.

800 x 0.8 = 640

I Hope That This Helps! :)

4 0
3 years ago
Read 2 more answers
PLEASE ASAP ILL GIVE BRAINLIEST.
kaheart [24]
I’m going to say the top one it seems like that would be correct
6 0
3 years ago
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What additional information is needed to prove the triangles are congruent by SAS ?
DENIUS [597]

Answer:

Answer choice B was correct

Step-by-step explanation:

Line segment EB is congruent to line segment CB. I took the test.

4 0
3 years ago
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