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RideAnS [48]
2 years ago
6

Simplify √ 63 fully, giving your answer in the form a √ b

Mathematics
2 answers:
Misha Larkins [42]2 years ago
8 0

A12

Step-by-step explanation

worty [1.4K]2 years ago
5 0

Answer:

3\sqrt{7}

Step-by-step explanation:

Using the rule of radicals

\sqrt{a} × \sqrt{b} = \sqrt{ab} , then

\sqrt{63}

= \sqrt{9(7)}

= \sqrt{9} × \sqrt{7}

= 3\sqrt{7}

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For which value of x must the square root <br><br> 97x<br><br> be further simplified
lys-0071 [83]

Question:

For which value of x must the expression √97x be further simplified?

A. 5    B. 10     C. 15     D. 20

Answer:

D.  x = 20

Step-by-step explanation:

Given

\sqrt{97x

Required

For what value of x can it be simplified

From the list of options, only (D) is correct

D. 20

Substitute 20 for x in \sqrt{97x

\sqrt{97 x} = \sqrt{97 * 20}

Express 20 as 4 * 5

\sqrt{97 x} = \sqrt{97 * 4 * 5}

Reorder

\sqrt{97 x} = \sqrt{4 *97 * 5}

Split

\sqrt{97 x} = \sqrt{4} *\sqrt{97 * 5}

\sqrt{97 x} = 2*\sqrt{97 * 5}

\sqrt{97 x} = 2*\sqrt{485}

\sqrt{97 x} = 2\sqrt{485}

With other values of x, the given expression can not be simplified.

Hence:

x = 20

6 0
3 years ago
When adding 35.64 to a certain number, the sum is 38.24, as seen below. What number should go in the box to complete the additio
gulaghasi [49]
The answer is 2.6 I got this by doing 38.24-35.64
5 0
3 years ago
PLZZ HELPP IM FAILLING THIS CLASS
arlik [135]

Answer:

Hope this helps!!! :)

Step-by-step explanation:

#1: if there is buy 1 get 1 free, then buy 6 get 3 free. so 2.8 times 3 = $8.4

#2: 4 for $3. break it up to 1 for $0.75. now 0.75 times 6 = $4.5

#3: the second one. $4.5 < $8.4

#4: 45 times 12 = $54

4 0
3 years ago
What is 9 divided by 765 <br><br> please show the work i really need help
BartSMP [9]
765 / 9 = 85
9*100 = 900 but this is too much
900 - 765 = 135
9 goes into 135 15 times (9*10=90 which leaves 45 which is 9*5 so 5+10) so you minus 15 from the 100 that made 900
so 100 - 15 = 85
5 0
3 years ago
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Stefan sells Jin a bicycle for $163 and a helmet for $17. The total cost for Jin is 150% of what Stefan spent originally to buy
cluponka [151]

Answer:

44$

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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