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
Setler79 [48]
2 years ago
11

What is

" class="latex-formula">
8.4 - 4.2 ​
Mathematics
1 answer:
STALIN [3.7K]2 years ago
3 0

Answer:

4.2

Step-by-step explanation:

\mathrm{Write\:the\:numbers\:one\:under\:the\:other,\:line\:up\:the\:decimal\:points.}

\mathrm{Add\:trailing\:zeroes\:so\:the\:numbers\:have\:the\:same\:length.}

\begin{matrix}\space\space&8&.&4\\ -&4&.&2\end{matrix}

\mathrm{Subtract\:each\:column\:of\:digits,\:starting\:from\:the\:right\:and\:working\:left}

\mathrm{In\:the\:bolded\:column,\:subtract\:the\:second\:digit\:from\:the\:first}:\quad \:4-2=2

\frac{\begin{matrix}\space\space&8&.&\textbf{4}\\ -&4&.&\textbf{2}\end{matrix}}{\begin{matrix}\space\space&\space\space&\space\space&\textbf{2}\end{matrix}}

\mathrm{Place\:the\:decimal\:point\:in\:the\:answer\:directly\:below\:the\:decimal\:points\:in\:the\:terms}

\frac{\begin{matrix}\space\space&8&\textbf{.}&4\\ -&4&\textbf{.}&2\end{matrix}}{\begin{matrix}\space\space&\space\space&\textbf{.}&2\end{matrix}}

\mathrm{In\:the\:bolded\:column,\:subtract\:the\:second\:digit\:from\:the\:first}:\quad \:8-4=4

\frac{\begin{matrix}\space\space&\textbf{8}&.&4\\ -&\textbf{4}&.&2\end{matrix}}{\begin{matrix}\space\space&\textbf{4}&.&2\end{matrix}}

=4.2

You might be interested in
There are 7 more quarters than nickels. If there is a total of $ 2.65 in coins, how many quarters are there?
Solnce55 [7]

o=nickel

O=quarter

O O O O O O O O O O + o o o =2.65

(2.50+.15=2.65)

there are 10 quarters total, and 3 nickels

5 0
3 years ago
Express the confidence interval 0.319 < p < 0.488 in the form of p ± E.
KengaRu [80]

Answer:

0.4035+/-0.0845

Step-by-step explanation:

The fundamental step would be to determine the values of p and E which i believe is the margin of error in this case. Consider the following two equations;

p-E=0.319\\p+E=0.488

We simply add the two equations and solve for p;

2p=0.807\\p=0.4035

We then substitute this value of p in either equation and solve for E;

0.4035-E=0.319\\E=0.0845

Since we have both p and E, the confidence interval can thus be written as;

0.4035+/-0.0845

8 0
3 years ago
Need help please!!!!<br>​
Simora [160]

Answer:

15/x-2

Step-by-step explanation:

Cant attach the photo but you use a division table

6 0
3 years ago
The temperature is -2c. If the temperature rises by 15c what is the new temperature?
svetoff [14.1K]

Answer:

13c

Step-by-step explanation:

-2+15=13

13c

3 0
3 years ago
Read 2 more answers
Ginger Yiu has a principal of $900 in her savings account with a 6% APR. The simple interest is calculated quarterly. What is th
Bezzdna [24]
A=p (1+rt)
A future value ?
p Principle 900
R interest rate 0.06
T time 9/12

A=900×(1+0.06×(9÷12))
A=940.5
3 0
3 years ago
Other questions:
  • PLEASE HELP URGENTLY! I DONT UNDERSTAND ANYTHING! PLEASE EXPLAIN YOUR ANSWER!
    14·1 answer
  • Evaluate –x + (–5.8) for x = 7.1.<br><br> –1.3<br> 12.9<br> –12.9<br> 1.3
    15·2 answers
  • May somebody help me on this
    8·2 answers
  • Factor the polynomial?<br> 2x^2+4x^2+6x^3
    11·1 answer
  • Solve for X <br><br> 35<br> 34.5<br> 34<br> 17
    11·1 answer
  • HELP PLEASE <br><br><br> identify the solution to the system of equations
    15·1 answer
  • in the number 40.9113,how does the value of 1 in hundredths place compare to the value of 1 in the thousandths place ???
    7·2 answers
  • 1) A spinner is spun 500 times.
    15·2 answers
  • PLEASE PLEASE PLEASE HELP! I WILL GIVE BRAINLIEST
    5·1 answer
  • PLEASE HELP
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!