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3 years ago

PLEASE HELP ASAP!!! CORRECT ANSWER ONLY PLEASE!!!

Mathematics

1 answer:

Nadya [2.5K]3 years ago

5 0

Answer: b) rolled three times, number of 2s rolled

d) rolled twice, number of odds rolled

<u>Step-by-step explanation:</u>

A binomial experiment must meet the following criteria:

There must be a fixed number of trials (rolls)
Each trial (roll) is independent of the others
There are only two outcomes (success or fail)
The probability of each outcome remains constant from trial to trial

a) rolled twice --> satisfies #1 & #2 (n = 2)

X is the sum --> fails #3 (more than two outcomes)

b) rolled three times --> satisfies #1 & #2 (n = 3)

X is the number of 2s rolled --> satisfies #3 & #4 (P success = 1/6)

c) rolled an unknown number of times - fails #1

d) rolled twice --> satisfies #1 & #2 (n = 2)

X is the number of odds rolled --> satisfies #3 & #4 (P success = 1/2)

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One of two complementary angles measures 30 degrees more than three times the other. Find each angle.

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The two complementary angles are:

95° and 15°

Step-by-step explanation:

Let x be one angle

then the other angle will be 90-x

As the sum of complementary angles is 90

So,

then according to statement

$x = 3(90-x)+30\\x = 270-3x +30\\x = 300-3x\\x+3x = 300\\4x = 300\\x = \frac{300}[4}\\x = 75\\and\\90 -x = 90 - 75 = 15$

The two complementary angles are:

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3 years ago

LCM of 14 and 49? Evaluate plz

ICE Princess25 [194]

Answer:

Step-by-step explanation:

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3 years ago

Use one of your new conjectures to find the lettered angles measures. R=

amm1812

Answer:

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3 years ago

Find the missing angle x. Round to the nearest whole number.

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3 years ago

At winstead elementary school 10.2% of the 88 boys have blue eyes and 5.3% of the 75 girls have blue eyes. What percent of the s

IrinaK [193]

Answer: ≈ 8%

Step-by-step explanation:

Total number of students = total number of boys + total number of girls

Total number of students = 88 + 75

Total number of students = 163

10.2% of the boys have blue eyes , this means that 10.2% of 88 have blue eyes

$\frac{10.2}{100}$ x 88 = 8.976

Since we are dealing with humans , therefore , this means that 9 boys have blue eyes.

Also , 5.3% of the girls have blue eyes means that 5.3% of 75 have blue eyes. That is

$\frac{5.3}{100}$ x 75 = 3.975 , therefore : 4 girls have blue eyes.

In total , 13 students have blue eyes

Therefore , to calculate the % of students that have blue eyes , we have :

13/163 x 100 = 7.975460123

Therefore : ≈ 8% of the students have blue eyes

7 0

4 years ago