1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
steposvetlana [31]
3 years ago
7

Simplify the expression. Write the answer using scientific notation. (9*10^7)(7*10^9)

Mathematics
1 answer:
kirill115 [55]3 years ago
7 0

first one: 9 x 10^8th i thinkor just 90 million

second one: 7 billion. 7 x  10^9

You might be interested in
This app doesn’t know how to read a picture
SSSSS [86.1K]
It’s the 3rd one hopefully this helps
5 0
3 years ago
What is 0.9 as a fraction in simplest form
Brums [2.3K]
9/10 is the answer. Basic elementary math
5 0
3 years ago
Read 2 more answers
Pat bounces a basketball 25 times in 30 seconds. At that rate, approxiaetely how many times will Pat bounce the ball in 150 seco
-Dominant- [34]

Answer:

1d CV jiewxbiihve EU historical

6 0
3 years ago
Can you help me with these 3?
miskamm [114]

Step-by-step explanation:

1. 5,11,17,23,29,35

Common difference is 6

3. 8,21,34, 47,60

Common difference is 13

5. 5,10,15,20,25

Common difference is 5

3 0
3 years ago
In a school survey, three homerooms are chosen and 10 students from each homeroom are randomly chosen to complete the survey. Id
lesya [120]

Answer:

This sampling method used in this question is the stratified sampling method.

Step-by-step explanation:

There are about 5 known sampling methods.

- Random Sampling

In random sampling, each member of the population has an equal chance of being surveyed. All the students are given a number and random numbers are generated to pick the students to be surveyed.

- Systematic sampling

This is easier than random sampling. In systematic sampling, a particular number, n, is counted repeatedly and each of the nth student is picked to be sampled.

- Convenience Sampling

This is the worst sampling technique. It is also the easiest. In Convenience sampling, the surveyor just surveys the first set of students that they find.

- Cluster sampling

Cluster Sampling divides the population into groups which are called clusters or blocks. The clusters are selected randomly, and every element in the selected clusters is surveyed.

- Stratified Sampling

Stratified sampling divides the population into groups called strata. A sample is taken from all or some of these strata using either random, systematic, or convenience sampling. This is evidently the answer to the question as the students are divided into homerooms (strata) and samples are now randomly taken from 3 randomly selected strata.

Hope this Helps!!!

6 0
3 years ago
Other questions:
  • Hen solving a system of two linear equations in two​ variables, all variables subtract out and the resulting equation is 0 equal
    9·1 answer
  • Help me I dont understand this question ​
    13·1 answer
  • What is a - b over 2?
    12·1 answer
  • This is a similar shape question.
    5·2 answers
  • What is 80% of 22? pls, I need the answer.
    10·2 answers
  • A high school football team won 80% of the games they played. If they played 35 games, how many games did they win?
    12·1 answer
  • Find the center and the radius
    9·1 answer
  • A line that includes the point (-4, 7) has a slope of 6. What is its equation in point-slope
    5·1 answer
  • The mapping diagram shows a relation. A mapping diagram shows a relation, using arrows, between inputs and outputs for the follo
    9·2 answers
  • Scientific notation for 7×10^9​
    11·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!