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
Greeley [361]
3 years ago
13

Simplify the expression. Write the answer using scientific notation. (7 × 105)2 a. 4.9 × 1010 b. 4.9 × 1011 c. 4.9 × 109 d. 49 ×

1010
Mathematics
1 answer:
nataly862011 [7]3 years ago
6 0

Answer:

b. 4.9 × 1011

Step-by-step explanation:

Using scientific notation is similar to expressing in standard form. Given that (7 × 105)2

We open the parenthesis. This may first be expressed as

7² × 10⁽⁵⁾²

Then expand,

= 49 × 10¹⁰

To put in scientific notation, 49 = 4.9 × 10

Hence the expression becomes

= 4.9 × 10 × 10¹⁰

Using the laws of indices

= 4.9 ×  10¹¹ in scientific notation

You might be interested in
33.3. percent of the at-bats in the baseball game were hits .If there was 27 at-bats, how many hit were in the game round to nea
lesya692 [45]

Answer:

9

Step-by-step explanation:

33.3%=1/3

27/3=9

6 0
3 years ago
a bag of chocolate mix that weighed 1/9 of a kilogram could make enough brownies to feed 1/8 of the students at school. how many
Julli [10]
You would need only 1 bag to feed all the students.
6 0
4 years ago
Which system of equations is graphed below?
algol [13]

(Pls give brainliest! :D)

Answer:

<em>B</em>

Step-by-step explanation:

<em>You know that the graph intercepts at the point of (4,-2)</em>

<em />

<em>Where x = 4 and y = -2.</em>

<em />

<em>This means that whenever you plug a value of x in the equation it should give the value of y.</em>

<em />

<em>For example when you plug x= 4 into the equation (B), it should look like this.</em>

<em />

<em>4- y = 6, solving for y gives us the value negative 2.</em>

<em />

<em>This means that it does give us this point, however, as the graph shows us, both lines meet at the point which means that both equation should give us this point.</em>

<em />

<em>If we substitute x = 4 in the second equation of b, we should be able to get 3(4) + 4y = 4. Solving for y gives us -2.</em>

<em />

Hope this helps!

-<em>Yumi</em>

4 0
3 years ago
Read 2 more answers
The length of a rectangle is 7 inches more than three times the width. the perimeter is 94 inches. find the length and width.
umka21 [38]

10 + 37 + 37 + 10
7 0
3 years ago
What is x if -7-2x=-6
PolarNik [594]

Answer:

-1/2

Step-by-step explanation:

-7-2x=-6

Add the -7 to the -6 and get: -2x=1

Divide -2

x=-1/2

3 0
3 years ago
Read 2 more answers
Other questions:
  • Can anyone help with these 2 problems?
    11·2 answers
  • Target sells 24 bottles of water for $3, and 36 bottles of water for $4. Which is the better buy and by how much?
    14·1 answer
  • Which expression is equivalent
    10·2 answers
  • What Is SU when ST = 20 and TU = 8
    8·2 answers
  • What is the solution to the equation1 over the square root of 8 = 4(m − 2)? (1 point)
    7·2 answers
  • Help!! For this question I got 254.34 as my final answer but when I checked my answer it told me I was wrong?
    11·1 answer
  • Find the range of the function rule y=5x−2 for the domain.{−12, 14, 25}
    9·2 answers
  • I need help please and thank you
    7·2 answers
  • Helppppppppppppppppppppppppppppppp
    15·1 answer
  • The diagram shows triangle ABC with D on AC and E on AB. DE is a straight line. AD = 27 m, AE = 39 m, DE = 23 m and BC = 65 m. C
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!