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barxatty [35]
3 years ago
7

427+364 find the sum

Mathematics
2 answers:
prisoha [69]3 years ago
8 0
The answer is 791......
WINSTONCH [101]3 years ago
5 0

Answer by JKismyhusbandbae:

Line\:up\:the\:numbers\\\begin{matrix}\space\space&4&2&7\\ +&3&6&4\end{matrix}\\Add\:each\:column\:of\:digits,\:starting\:on\:the\:right\:and\:working\:left.\\\mathrm{If\:the\:sum\:of\:a\:column\:is\:more\:than\:ten,\:'carry'\:digits\:to\:the\:next\:column\:on\:the\:left.}\\\mathrm{Add\:the\:digits\:of\:the\:bolded\:column}:\quad \:7+4=11\\\begin{matrix}\space\space&4&2&\textbf{7}\\ +&3&6&\textbf{4}\end{matrix}\\

\mathrm{Carry\:}1\mathrm{\:to\:the\:column\:on\:the\:left\:and\:write\:}1\mathrm{\:in\:the\:bolded\:column}\\\frac{\begin{matrix}\space\space&\space\space&1&\textbf{\space\space}\\ \space\space&4&2&\textbf{7}\\ +&3&6&\textbf{4}\end{matrix}}{\begin{matrix}\space\space&\space\space&\space\space&\textbf{1}\end{matrix}}\\\mathrm{Add\:the\:digits\:of\:the\:bolded\:column}:\quad \:1+2+6=9\\

\frac{\begin{matrix}\space\space&\space\space&\textbf{1}&\space\space\\ \space\space&4&\textbf{2}&7\\ +&3&\textbf{6}&4\end{matrix}}{\begin{matrix}\space\space&\space\space&\textbf{9}&1\end{matrix}}\\\mathrm{Add\:the\:digits\:of\:the\:bolded\:column}:\quad \:4+3=7\\\frac{\begin{matrix}\space\space&\textbf{\space\space}&1&\space\space\\ \space\space&\textbf{4}&2&7\\ +&\textbf{3}&6&4\end{matrix}}{\begin{matrix}\space\space&\textbf{7}&9&1\end{matrix}}\\=791

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wlad13 [49]

Answer:

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Step-by-step explanation:

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3 years ago
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A radio is being discounted 40%. If the sale price of the radio is $31.02, what was the original price of the radio?
kobusy [5.1K]

Answer:

$51.70 is the original price

Step-by-step explanation:

Step 1:

Turn 40% into a decimal which makes it 0.40

ex. 50% would be 0.50, 5% would be 0.05 etc.

Step 2:

Put the numbers into this formula: Original Price (x) - Percent Off times Original Price = Sales Price

x - 0.40x = 31.02  this is basically 1x - 0.40x = 31.02 so,

Solving the left side of our equation gives us 1x - 0.40x = 0.60x

so now you have: 0.60x = 31.02

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8 0
3 years ago
4/7 - -3/5 step by step pls explain​
lidiya [134]

Answer:

41/35

Step-by-step explanation:

Simplify the following:

4/7 + 3/5

Put 4/7 + 3/5 over the common denominator 35. 4/7 + 3/5 = (5×4)/35 + (7×3)/35:

(5×4)/35 + (7×3)/35

5×4 = 20:

20/35 + (7×3)/35

7×3 = 21:

20/35 + 21/35

20/35 + 21/35 = (20 + 21)/35:

(20 + 21)/35

| 2 | 1

+ | 2 | 0

| 4 | 1:

Answer: 41/35

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3 years ago
A cylinder has radius 2.5 cm and lateral area 20 pi cm^2. What is the surface area of the cylinder in terms of pi?
Novosadov [1.4K]
This is the concept of areas of solid materials; the surface area of the cylinder whose radius is 2.5 cm and lateral area is 20 pi cm^2 will be: Surface area of cylinder is given by:
SA=(area of cyclic sides)+(lateral area)
SA=2πr^2+πrl
Area of the cyclic sides will be:
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SA=(12.5π+20π) cm^2
SA=32.5π cm^2
The answer is 32.5π cm^2

4 0
3 years ago
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