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Katarina [22]
3 years ago
12

I need help with this question please

Mathematics
2 answers:
umka21 [38]3 years ago
7 0

Answer:

C. 9

Step-by-step explanation:

area \: of \: square =  {side}^{2} \\  \therefore \:   {side}^{2}  = 81 \\\therefore \:  side =  \sqrt{81}  \\ \therefore \:  side = 9 \: feet

Hence, side length of square = 9 feet.

Natasha_Volkova [10]3 years ago
3 0

Answer:

9 ft

Step-by-step explanation:

Area = 81 ft²

Area of square = length x length

A square has all its sides equal

Therefore

Area = L²

L² = 81 ft²

Find square root of both sides

sq rt L² = sq rt  81 ft²

L = 9 ft

Therefore length of the square = 9 ft

I hope this was helpful, please rate as brainliest

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I think it should be 32

Step-by-step explanation:

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2 years ago
Which is the simplified form of the expression 3(7/5x+4) - 2(3/2 - 5/4x)?
Kruka [31]

Answer:

B. \frac{67}{10} x + 9

Step-by-step explanation:

Simplify the expression. Remember to go by the order of operations, or PEMDAS.

1) First, distribute the numbers outside of the set of parentheses to the terms inside the set of parentheses next to them. Then, simplify the fractions.

3(\frac{7}{5} x + 4) -2 (\frac{3}{2} -\frac{5}{4} x)

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2) Finally, combine like terms. (This means to add or subtract constants and to add or subtract terms with the same variables.) You may need to convert terms to the same denominator in order to do so easier. Then, reduce the fraction.

\frac{21}{5} x + 9 + \frac{10}{4}x \\\frac{84}{20}x + \frac{50}{20}x + 9 \\\frac{134}{20}x + 9 \\\frac{67}{10}x + 9

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8 0
3 years ago
If a triangle with angle measures 40,30.and 120 centimeters possible?
vagabundo [1.1K]
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40+30>120
70>120
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7 0
3 years ago
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Help!! this is kinda urgent​
Elenna [48]

Answer

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Step-by-step explanation:

There might be and there are other ways but the way I did it is I  converted the fractions to decimals. 1 3/4= 1.75, 1 1/2= 1.5, and 4 1/2 equals 4.5. So I added the time he practiced on Monday and Tuesday and subtracted it from the final hour of the whole entire week and the answer is 1.25 or 1/4

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3 years ago
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