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Leokris [45]
2 years ago
15

Christine performed the following experiment 20 times using a book that contains 462 pages.

Mathematics
1 answer:
wel2 years ago
7 0

Using the probability concept, it is found that there is a 0.3 = 30% experimental probability that Christine will randomly choose a page that is divisible by 3.

<h3>What is a probability?</h3>

A probability is given by the <u>number of desired outcomes divided by the number of total outcomes</u>.

In an experimental probability, these number of outcomes are taken from previous trials.

In this problem:

  • The experiment was made 20 times.
  • Of those, in 6 experiments(81, 105, 171, 159, 297, 387) she choose a page that was divisible by 3.

Then:

p = \frac{6}{20} = 0.3

0.3 = 30% experimental probability that Christine will randomly choose a page that is divisible by 3.

You can learn more about the probability concept at brainly.com/question/15536019

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Jackie has 10 groups of pennies with 3 pennies in each group. Carlos has 5 groups of pennies with 100 pennies in each group. Who
Tcecarenko [31]
Answer=Carlos

If Jackie has 10 groups, with 3 in each groups, she has 30 total pennies.

10*3=30 pennies

If Carlos has 5 groups with 100 in each group, then Carlos has 500 pennies.

5*100=500 pennies

500 pennies is more than 30 pennies, so Carlos has more pennies
8 0
3 years ago
Read 2 more answers
Which value must be added to the expression x2 – 3x to make it a perfect-square trinomial?
Vitek1552 [10]

Answer:

\frac{9}{4}

Step-by-step explanation:

Given

x² - 3x

To make the expression a perfect square

add ( half the coefficient of the x- term )²

x² + 2( - \frac{3}{2} )x + \frac{9}{4}, thus

x² - 3x + \frac{9}{4}

= (x - \frac{3}{2})² ← a perfect square

7 0
3 years ago
Pls help WILL GIVE BRAINLIST
myrzilka [38]

Answer:

<u>135.94 feet</u>

Step-by-step explanation:

Split the problem into two parts :

  1. Distance between viewer and building
  2. Height of the top part of the building

<u>Distance between viewer and building</u>

  • The lower part of the building is 40 feet, as it is mentioned the viewer is 40 feet above street level
  • Let the distance be called 'd'
  • Therefore, tan37° = 40/d
  • tan37° = 3/4 = 0.75
  • ⇒ 40/d = 0.75
  • ⇒ d = 40/(3/4) = 40 x 4/3 = 160/3 = 53.3 feet

<u>Height of the top part of the building</u>

  • Let the height of the top part be 'h'
  • Therefore, tan61° = h/d = h/53.3
  • tan61° = 1.8
  • ⇒ h/53.3 = 1.8
  • ⇒ h = 53.3 x 1.8 = 95.94 feet

<u>Total height of building</u>

  • Lower part + Top part
  • 40 + 95.94
  • <u>135.94 feet</u>

<u />

3 0
2 years ago
A.Solve for x. Then, using that information, find the measure of
Vedmedyk [2.9K]

Answer:

See answers below

Step-by-step explanation:

Since both trinagles asre similar hence the ratio of the similar sides are equal.

From both triangles;

y + 7 = 3y - 7

y - 3y = -7-7

-2y = -14

y = 14/2

y = 7

FE = 3y - 17

FE = 3(7) - 17

FE = 21 - 17

FE = 4

AB = y'+7

AB = 7 + 7

AB = 14

Similarly

3x+20 = 5x - 80

3x -5x = -80-20

-2x = -100

x = 100/2

x = 50

<A = 3x + 20

<A = 3(50) + 20

<A = 150 + 20

<A = 170degrees

Hence x= 50 and y = 7

8 0
2 years ago
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