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Vlada [557]
2 years ago
13

A birthday cake is shaped like a square. The area of the square is 64

Mathematics
1 answer:
anastassius [24]2 years ago
3 0

Answer:

8 square inches. You find area by length x height. A square's sides are all of equal length. So what number x itself is 64? The answer is 8 because 8 x 8 equals 64.

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A three-digit number ends in number 7. If you put the number 7 in the first position, the number will increase by 324. Find the
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Answer:

<u>The original three-digit number is 417</u>

Step-by-step explanation:

Let's find out the solution to this problem, this way:

x = the two digits that are not 7

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5 0
3 years ago
Solve the system of equations. −9y+4x−20=0−7y+16x−80=0\begin{aligned} &amp;-9y+4x - 20=0 \\\\ &amp;-7y+16x-80=0 \end{aligned} ​
gulaghasi [49]

Answer:

  • (x, y) = (5, 0)

Step-by-step explanation:

\begin{aligned} &-9y+4x - 20=0 \\ &-7y+16x-80=0 \end{aligned}

Subtract 4 times the first equation from the second:

  (-7y +16x -80) -4(-9y +4x -20) = (0) -4(0)

  29y = 0 . . . . . simplify

  y = 0 . . . . . . . .divide by 29

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  x -5 = 0 . . . . . .divide by 4

  x = 5 . . . . . . . . add 5

The solution to this system is (x, y) = (5, 0).

7 0
3 years ago
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