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2 years ago

Prove by factorization √16×81=√16×√81

Mathematics

1 answer:

Oksanka [162]2 years ago

4 0

Answer:

√16×81 = 4×9 or √1296 = 36

√16×√81 = 4×9 = 36

Step-by-step explanation:

√81×16

We simplify 81 and 16 by prime factorisation (expressing a number as a product of its prime factors).

√81 = √3×3×3×3 = √9×9 = √9² = 9

√16 = √2×2×2×2 = √4×4 = √4² = 4

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Johnson rode her bike 7 miles to a lake. She rode 3/4 of distance to the lake before lunch. How many miles did Johnson ride befo

Virty [35]

Answer:

5.25 miles.

Step-by-step explanation:

What I did was I took 3/4 and made it into its decimal form which is 3/4. I then times it by 7 to get 5.25.

5.25 miles is your answer.

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3 years ago

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shusha [124]

Answer:

B all real numbers greater than 0

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3 years ago

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netineya [11]

Answer:

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Step-by-step explanation:

135+45 =180

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2 years ago

I will give Brainliest if you answer these 4 questions!!!!

masya89 [10]

Okay so
#1
4 for 5 would mean each single M&M is 1.25 (5/4)
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4 for 5 is the better deal

#2
10 for 35 is 3.50 each (35/10)
12 for 40 is about 3.34 each (40/12)

#3
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#4
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4 0

2 years ago

F(x)= 5x^2+6, g(x)= 7x find (f o g)(x), find (g o f)(x), find f(g(-4)), fine g(f(5))

KiRa [710]

$(f o g)(x) = 245x^2+6\\(g o f)(x) = 5x^2+42\\ f(g(-4)) = 3926\\g(f(5)) = 917$

Step-by-step explanation:

Given

$f(x) = 5x^2+6\\g(x) = 7x$

$(f o g)(x) = 5(7x)^2+6\\= 5(49x^2)+6\\=245x^2+6\\(g o f)(x) = 7(5x^2+6)\\= 35x^2+42\\(fog(x))=245x^2+6f(g(-4)) = 245(-4)^2+6 \\=245(16)+6\\=3920+6\\=3926\\g(f(x)) = 35x^2+42\\g(f(5)) = 35(5)^2+42\\=35(25)+42\\=875+42\\=917$

Hence,

$(f o g)(x) = 245x^2+6\\(g o f)(x) = 5x^2+42\\ f(g(-4)) = 3926\\g(f(5)) = 917$

Keywords: functions, Function composition

Learn more about functions at:

#LearnwithBrainly

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3 years ago