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klasskru [66]
3 years ago
10

Find the area of a square whose side is 9.4cm .

Mathematics
1 answer:
BigorU [14]3 years ago
7 0

Area = {(9.4)}^{2}

= 88.36 \:  {cm}^{2}

Therefore, area of square is 88.36 cm².

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if f(x) = √(x²-9) , then Domain of f = __________ (a) (-∞,-3)∪(3,∞) (b) (-∞,-3]∪ [3,∞) (c) (-∞,∞) (d) [-3,3]
densk [106]

Answer:

domain is:(-∞,-3]∪ [3,∞)

Step-by-step explanation:

f(x)=√(x²-9)

f(x)=√(x-3)(x+3)

domain is:(-∞,-3]∪ [3,∞)

6 0
4 years ago
Anyone help please I need it
andreev551 [17]

Answer:

-10+i\sqrt{2}

Step-by-step explanation:

One is given the following expression:

\sqrt{4}-\sqrt{-98}-\sqrt{144}+\sqrt{-128}

In order to simplify and solve this problem, one must keep the following points in mind: the square root function (\sqrt{}) is a way of requesting one to find what number times itself equals the number underneath the radical sign. One must also remember the function of taking the square root of a negative number. Remember the following property: (\sqrt{-1}=i). Simplify the given equation. Factor each of the terms and rewrite the equation. Use the square root property to simplify the radicals and perform operations between them.

\sqrt{4}-\sqrt{-98}-\sqrt{144}+\sqrt{-128}

\sqrt{2*2}-\sqrt{-1*2*7*7}-\sqrt{12*12}+\sqrt{-1*2*8*8}

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2-7i\sqrt{2}-12+8i\sqrt{2}

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-10+i\sqrt{2}

8 0
3 years ago
Which of the following are solutions to the equation below?
NemiM [27]

Answer:

C and D

Step-by-step explanation:

Given

(3x - 5)² = 19 ( take the square root of both sides )

3x - 5 = ± \sqrt{19} ( add 5 to both sides )

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x = \frac{+/-\sqrt{19}+5 }{3}

x = \frac{-\sqrt{19}+5 }{3} → C

x = \frac{\sqrt{19}+5 }{3} → D

4 0
4 years ago
Read 2 more answers
The access code for a cars security system consist of four digits the first digit cannot be 1 and the last digit must be odd how
Katena32 [7]
So we have 10 numbers 0 - 9 
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therefore there are 9 possibilities 
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 codes available

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4 years ago
Christian reads 1/4 book every 2/3 week.<br><br> How many books does Christian read per week?
ratelena [41]
First you must convert the denominator to an equal number by finding a same multiple, in this case it is 12. So the factions convert to 3/12 and 8/12. Now add the two, resulting in 11/12. So the answer is 11/12 
4 0
3 years ago
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