All categories

3 years ago

Explain why it works to break apart a number by place values to multiply

2 answers:

kramer3 years ago

6 0

Well first of all if I had a multiplication question such as 12,000×1000 of course you would know it would be 12,000 well you would always use your place value chart saying ones tens hundreds thousands and thousands and hundreds

kow [346]3 years ago

4 0

If you had a problem like 80x20 you wouldn't know what that was but you can take out the 0's and do 8x2 which is 16 then add back both 0's to make 1,600

You might be interested in

A school choir has 36 members. There are three times as many underclassmen as seniors. How many seniors are in the choir?

joja [24]

108 if my maths is correct

5 0

3 years ago

Read 2 more answers

X^3 + 4x^2 + 5x +20 factor by grouping

mixas84 [53]

Step-by-step explanation:

x³ + 4x² + 5x + 20

x² (x + 4) + 5 (x + 4)

(x² + 5) (x + 4)

5 0

3 years ago

Suppose that 4 fair coins are tossed. Let Equals The event that exactly 2 coins show tails and Equal The event that at least 2 c

faust18 [17]

Answer:

a) P ( E | F ) = 0.54545

b) P ( E | F' ) = 0

Step-by-step explanation:

Given:

- 4 Coins are tossed

- Event E exactly 2 coins shows tail

- Event F at-least two coins show tail

Find:

- Find P ( E | F )

- Find P ( E | F prime )

Solution:

- The probability of head H and tail T = 0.5, and all events are independent

So,

P ( Exactly 2 T ) = ( TTHH ) + ( THHT ) + ( THTH ) + ( HTTH ) + ( HHTT) + ( HTHT) = 6*(1/2)^4 = 0.375

P ( At-least 2 T ) = P ( Exactly 2 T ) + P ( Exactly 3 T ) + P ( Exactly 4 T) = 0.375 + ( HTTT) + (THTT) + (TTHT) + (TTTH) + ( TTTT)

= 0.375 + 5*(1/2)^4 = 0.375 + 0.3125 = 0.6875

- The probabilities for each events are:

P ( E ) = 0.375

P ( F ) = 0.6875

- The Probability to get exactly two tails given that at-least 2 tails were achieved:

P ( E | F ) = P ( E & F ) / P ( F )

P ( E | F ) = 0.375 / 0.6875

P ( E | F ) = 0.54545

- The Probability to get exactly two tails given that less than 2 tails were achieved:

P ( E | F' ) = P ( E & F' ) / P ( F )

P ( E | F' ) = 0 / 0.6875

P ( E | F' ) = 0

6 0

3 years ago

Middle school math problem

irina [24]

Answer:

12%

Step-by-step explanation:

4 0

3 years ago

Segment CD has endpoints at C(0, 3) and D(0, 7). If the segment is dilated by a factor of 3 about point C, what is the length of

Klio2033 [76]

The distance is dilated by a factor of 3, the length of the image of segment CD will be 4(3) which is 12 units

Given the coordinate of the segment CD with endpoints at C(0, 3) and D(0, 7) is expressed as:

$D=\sqrt{(7-3)^2(0-0)^2}\\D=\sqrt{4^2}\\D = 4 units$

If the distance is dilated by a factor of 3, the length of the image of segment CD will be 4(3) which is 12 units

Learn more here: brainly.com/question/22624745

3 0

3 years ago