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lbvjy [14]
3 years ago
5

Rory was with some friends outside an ice cream parlor. He noticed that one out of every four people bought a vanilla cone. He w

ants to know the estimated probability that five randomly picked people entering the shop will not buy vanilla cones. How could you design a simulation of the scenario?
A. Spin a spinner with five equal sections five times. On the spinner, one section represents vanilla and four sections represent other flavors.
B. Spin a spinner with five equal sections four times. On the spinner, one section represents vanilla and four sections represent other flavors.
C. Spin a spinner with four equal sections five times. On the spinner, one section represents vanilla and three sections represent other flavors.
D. Spin a spinner with four equal sections four times. On the spinner, one section represents vanilla and three sections represent other flavors.
Mathematics
2 answers:
mrs_skeptik [129]3 years ago
7 0
C. would be the correct device to use in trials.

But the actual probability is:

(1-1/4)^5

243/1024

(about 23.73% chance none of the five chose vanilla)
Ksivusya [100]3 years ago
7 0
The answer to the question C.
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A triangular plaque has side lengths of 8 inches, 13 inches, and 15 inches.
lianna [129]
<h3>Answer:  A) 52 square inches</h3>

==========================================================

Explanation:

a = 8, b = 13, and c = 15 are the sides of the triangle

s = (a+b+c)/2 = (8+13+15)/2 = 18 is the semi-perimeter, aka half the perimeter.

Those values are then plugged into Heron's Formula below

A = \sqrt{s*(s-a)*(s-b)*(s-c)}\\\\A = \sqrt{18*(18-8)*(18-13)*(18-15)}\\\\A = \sqrt{18*(10)*(5)*(3)}\\\\A = \sqrt{2700}\\\\A = \sqrt{900*3}\\\\A = \sqrt{900}*\sqrt{3}\\\\A = 30\sqrt{3}\\\\A \approx 51.9615\\\\A \approx 52\\\\

The triangular plaque has an area of approximately 52 square inches.

6 0
2 years ago
Kim rolls a dice and flips a coin
tankabanditka [31]

Answer:

part a

The probability of getting a 2 is 1/6 and the probability of getting a head is 1/2. The probability of getting both is thus 1/6 x 1/2= 1/12

part b

The probability of getting an even number is 3/6 = 1/2. The probability of getting a tail is 1/2. The probability of getting both is thus 1/2 x 1/2= 1/4.

6 0
3 years ago
PLEASEE HELPPP TEST DUE IN 20 MINUTES!! A Question 2 (2 points) Retake question
shtirl [24]

Answer:

D. 25

Step-by-step explanation:

To find the new value of c when completing the square, use the formula (\frac{b}{2} )^{2}.

Plugging in the given values:

(\frac{10}{2} )^{2}

(5)²

= 25

hope this helps!

6 0
2 years ago
Read 2 more answers
Last year, the city library collected 117 used books for its shelves.This year, it collected 3 times as many books. How many boo
andrezito [222]
They collected 351 books this year

5 0
3 years ago
What property does 3/4x - 6 + 6 = -9 + 6 use​
mel-nik [20]

Answer:

Addition Property of Equality

Step-by-step explanation:

The addition property of equality says that;

a=b

is equivalent to

a+c=b+c

The given equation is \frac{3}{4}x-6+6=-9+6

We can observe that, 6 was added to both sides of

\frac{3}{4}x-6=-9 to obtain \frac{3}{4}x-6+6=-9+6.

Therefore the property use here is the addition property of equality.

6 0
2 years ago
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