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Anna35 [415]
3 years ago
6

Find the square root of each. If the radicand is not a perfect square, estimate the square

Mathematics
2 answers:
pashok25 [27]3 years ago
6 0
The fist one is a perfect square

Shkiper50 [21]3 years ago
3 0
First off, the underline underneath means plus or minus, since when you take the square root of something, the answer can be negative or positive at the same time
1. 64 is a perfect square. 8 x 8 = 64, therefore it is +- (plus or minus) 8.

2. 45 is not a perfect square, so you can pull out numbers or plug into a calculator and estimate.
Both answers: Since 45 is divisible by 9 and five, you can break a nine into two threes, therefore pull it out, and since the answer is negative, you get:
-3(5)^0.5 (an exponent of one-half or 0.5 means square root)
If you solve by calculator, the answer is ~= (approximately equal to) -6.72

3. Since 90 is not a perfect square, repeat the previous question. 9 can go into 90, therefore you can pull out two threes and are left with: +-3(10)^0.5
Using the calculator, you get ~= +-9.49
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Step-by-step explanation:

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The steps below show the incomplete solution to find the value of m for the equation 5m − 2m + 4 = −1 + 12: Step 1: 5m − 2m + 3
Delicious77 [7]

Given:

Consider the equation is:

5m-2m+3=-1+12

Some steps of the solution are given.

To find:

The next step of the solution.

Solution:

Step 1: The given equation is:

5m-2m+3=-1+12

Step 2: Simplifying right hand side.

5m-2m+3=11

Step 3: Simplifying left hand side.

3m+3=11

These steps are already given. So, the next step is:

Step 4: Subtracting 3 from both sides.

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Therefore, the correct option is (b).

8 0
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Kazeer [188]

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Half.

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It's being divided by two, unlike the second part of the equation. :)

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