Ask question

Ask question

All categories

3 years ago

5

Elizabeth rolls a die 108 times. How many times can she expect to roll a 2?

2 answers:

andrew11 [14]3 years ago

5 0

A.
Explanation: 108 divided by 2 = 54

Ainat [17]3 years ago

3 0

Answer:

as there are 6 numbers on a die you would expect to 2 roll about 108/6 = 18 times

Answer:B

Step-by-step explanation:

You might be interested in

(THIS IS A TEST I NEED HELP)

Dmitrij [34]

Answer:

i think its C

Step-by-step explanation:

8 0

3 years ago

Read 2 more answers

If y represents a number, write an expression for 4 more than 3 times the number

Kazeer [188]

We need to multiply Y by 3 since it says "3 times the number".

3Y; next we need to add 4 since it says 4 more.

3y+4; the reason I knew to put it in this order is because it said 4 more than 3 times, which means you add 4 after you multiply.

The expression is 3Y+4

6 0

3 years ago

Find the given value of x 2x + 3 for x = 3

damaskus [11]

First, you need to substitute the value of x in all of the x spots.
2x+3
2(3)+3. Us PEMDAS to solve the problem.
6+3
9

4 0

3 years ago

Read 2 more answers

A mother wants to invest $14,000.00 for her sons future education. She invests a portion of the money in a bank certificate of d

SVETLANKA909090 [29]

560, because 4 percent of 14,000.00 is 560.

7 0

3 years ago

Read 2 more answers

What is the multiplicative inverse of 5 in z11, z12, and z13? you can do a trial-and-error search using a calculator or a pc?

grin007 [14]

A multiplicative inverse of an integer a is an integer x such that the product ax is congruent to 1 with respect to the modulus m.

1. $Z_{11}=\{\overline{0},\overline{1},\overline{2},\overline{3},\overline{4},\overline{5},\overline{6},\overline{7},\overline{8},\overline{9},\overline{10}\}.$

Check:

$5\cdot 0=\overline{0};$
$5\cdot 1=\overline{5};$
$5\cdot 2=\overline{10};$
$5\cdot 3=15=\overline{4};$
$5\cdot 4=20=\overline{9};$
$5\cdot 5=25=\overline{3};$
$5\cdot 6=30=\overline{8};$
$5\cdot 7=35=\overline{2};$
$5\cdot 8=40=\overline{7};$
$5\cdot 9=45=\overline{1};$
$5\cdot 10=50=\overline{6}.$

The multiplicative inverse of 5 in $Z_{11}$ is 9.

2. $Z_{12}=\{\overline{0},\overline{1},\overline{2},\overline{3},\overline{4},\overline{5},\overline{6},\overline{7},\overline{8},\overline{9},\overline{10},\overline{11}\}.$

Check:

$5\cdot 0=\overline{0};$
$5\cdot 1=\overline{5};$
$5\cdot 2=\overline{10};$
$5\cdot 3=15=\overline{3};$
$5\cdot 4=20=\overline{8};$
$5\cdot 5=25=\overline{1};$
$5\cdot 6=30=\overline{6};$
$5\cdot 7=35=\overline{11};$
$5\cdot 8=40=\overline{4};$
$5\cdot 9=45=\overline{9};$
$5\cdot 10=50=\overline{2};$
$5\cdot 11=55=\overline{7}.$

The multiplicative inverse of 5 in $Z_{12}$ is 5.

3. $Z_{13}=\{\overline{0},\overline{1},\overline{2},\overline{3},\overline{4},\overline{5},\overline{6},\overline{7},\overline{8},\overline{9},\overline{10},\overline{11},\overline{12}\}.$

Check:

$5\cdot 0=\overline{0};$
$5\cdot 1=\overline{5};$
$5\cdot 2=\overline{10};$
$5\cdot 3=15=\overline{2};$
$5\cdot 4=20=\overline{7};$
$5\cdot 5=25=\overline{12};$
$5\cdot 6=30=\overline{4};$
$5\cdot 7=35=\overline{9};$
$5\cdot 8=40=\overline{1};$
$5\cdot 9=45=\overline{6};$
$5\cdot 10=50=\overline{11};$
$5\cdot 11=55=\overline{3};$
$5\cdot 12=60=\overline{8}.$

The multiplicative inverse of 5 in $Z_{13}$ is 8.

8 0

4 years ago