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3 years ago

What is the solution of sqrt x+2-15=-3

Mathematics

1 answer:

antiseptic1488 [7]3 years ago

3 0

Answer:

Step-by-step explanation:

Without brackets, we are not exactly sure what is under the root sign. There are 3 choices.

sqrt(x) + 2 - 15 = - 3

sqrt(x + 2) - 15 = - 3

sqrt(x + 2 - 15) = - 3

I think the middle one is what you intend. If not leave a note.

sqrt(x + 2) - 15 = - 3 Add 15 to both sides.

sqrt(x + 2) - 15+15 = - 3+15 Combine

sqrt(x + 2) = 12 Square both sides

x + 2 = 12^2 Do the right

x + 2 = 144 Subtract 2 from both sides.

x + 2-2 = 144-2

x = 142

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2 years ago

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Answer:

$21\frac{3}{4}$

Step-by-step explanation:

Step 1: Add the numbers.

20.25 can also be expressed as $20\frac{1}{4}$ , because $\frac{2025}{100}$ = $\frac{81}{4}$ = $20\frac{1}{4}$ . So if we add $20\frac{1}{4}$ and 11, we would get $31\frac{1}{4}$

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