Answer:
B. 40
Step-by-step explanation:
What do you understand by sample size; a sample size is a little portion of a large number we which to investigate. Imagine we wanted to know the electricity consumption of people in a town of 200million people sometimes we could do that be investigating that of 50million especially when you know the conditions would be no different from others. In this sense the sample size is 50 million because that's the one we are investigating.
Similarly our concern of interest for investigation is 40, so that's the sample size.
The line is y = x also called the diagonal.
Answer:
9 is the number
Step-by-step explanation:
2x-15 = 3
2x=18
x=9
Answer: There are 32 cards left to be signed
Step-by-step explanation:
Hi, the correct question is:
<em>The Smiths are sending out a batch of holiday cards. Emily signed 2/5 of the cards. Then Josh signed 1/9 of the remaining cards. Tatiana signed 20% of what Josh had left. If there were 75 cards in all, how many cards are left to be signed?
</em>
So, to answer this question:
Emily signed 2/5: so, we have to multiply the number of cards (75) by the amount that she signed:
Then, we subtract the result to the total amount of cards:
- 75-30 =45 cards left to be signed
Repeating the process with Josh (now the total number of cards is 45)
And finally we repeat the process with Tatiana ( using the decimal form of 20% ⇒ 20/100= 0.2)
- 40x 0.2=8
- 40-8 = 32 cards left to be signed