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frosja888 [35]
3 years ago
6

Someone help me pls 47 as the sum of ______

Mathematics
1 answer:
Elanso [62]3 years ago
3 0

9514 1404 393

Answer:

  (a) 6² +3² +1² +1² = 47

  (b) 5² +4² +2² +1² +1² = 47

  (c) 3³ +4² +2² = 47

Step-by-step explanation:

It can work reasonably well to start with the largest square less than the target number, repeating that approach for the remaining differences. When more squares than necessary are asked for, then the first square chosen may need to be the square of a number 1 less than the largest possible.

The approach where a cube is required can work the same way.

(a) floor(√47) = 6; floor(√(47 -6^2)) = 3; floor(√(47 -45)) = 1; floor(√(47-46)) = 1

__

(b) floor(√47 -1) = 5; floor(√(47-25)) = 4; ...

__

(c) floor(∛47) = 3; floor(√(47 -27)) = 4; floor(√(47 -43)) = 2

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2x-3/x devided by 7/x^2
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Answer:

\frac{2x^2-3x}{7}

Step-by-step explanation:

\frac{2x-3}{x} ÷  \frac{7}{x^2}

=> \frac{2x-3}{x} × \frac{x^2}{7}

=> \frac{2x-3}{7} × \frac{x^2}{x}

=>\frac{x(2x-3)}{7}

=> \frac{2x^2-3x}{7}

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Please help me and explain
MatroZZZ [7]

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If a = 3, what is the value of 2a2.<br><br>A. 6<br><br>B. 12<br>C. 18<br><br>D. 36<br>​
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Answer:

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A student has 10 coins in her pocket that have a value of $0.85. The coins are either
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Answer:

\left\{\begin{matrix}x+y=10\\ 0.05x+0.10y=0.85\end{matrix}\right.

Step-by-step explanation:

<u>System of Equations</u>

Let's call:

x = number of nickels in the student's pocket

y = number of dimes in the student's pocket

Each nickel has a value of $0.05, so x nickels have a value of 0.05x

Each dime has a value of $0.10, so y dimes have a value of 0.10y

The student has a total of 10 coins, thus:

x+y=10

The total value of the coins is $0.85, thus

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The system of linear equations that represents this scenario is:

\left\{\begin{matrix}x+y=10\\ 0.05x+0.10y=0.85\end{matrix}\right.

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