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anastassius [24]
3 years ago
14

How long would it take you to walk 2.4 km at a speed of 1.5 m/s

Mathematics
1 answer:
Mumz [18]3 years ago
7 0

Answer:

42.54

Step-by-step explanation:

forty two minutes and fifty four seconds

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Victoria is 4 years older than her neighbor . The sum of their ages is no more than 14 years .
Blizzard [7]
(x+4)+v<=14 is the equation
the neighboor's age is at most, 5 years
and victoria is 9 at most
3 0
3 years ago
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What is the perimeter of a square which has the same area as a circle with circumference of 4π?
Contact [7]
The circumference of a circle is given by: 2πr, where r is the radius of the circle. Equating 4π, we have 2πr = 4π so the radius of the circle is: r = 4/2 = 2. Then, the area of the circle is given by πr ^ 2 = π * (2 ^ 2) = 4π.Since the square and the circle have the same area, then: Let L be the side of the square, we have:  L ^ 2 = 4π, clearing L = 2 * (π ^ (1/2))The perimeter of a square is the sum of its sides:  P = L + L + L + L = 2 * (π ^ (1/2)) + 2 * (π ^ (1/2)) + 2 * (π ^ (1/2)) + 2 * (π) ^ (1/2))  P = 8 * (π ^ (1/2))
6 0
3 years ago
20 points! Will mark the brainliest!
andrew-mc [135]
\dfrac{ \dfrac{x+3}{4x^2-16} }{ \dfrac{2x^2+10x+12}{2x-4} }

-----------------------------------------------------------------------------------
Write the divide fraction horizontally:
-----------------------------------------------------------------------------------

= \dfrac{x+3}{4x^2-16} \div \dfrac{2x^2+10x+12}{2x-4}

-----------------------------------------------------------------------------------
Factorise the numerators and denominators when possible:
-----------------------------------------------------------------------------------

= \dfrac{x+3}{4(x+2)(x-2)} \div \dfrac{ 2(x + 3) (x + 2)}{2(x-2)}

-----------------------------------------------------------------------------------
Convert the divide fraction to multiplication fraction
-----------------------------------------------------------------------------------

= \dfrac{x+3}{4(x+2)(x-2)} \times \dfrac{2(x-2)}{2(x+3)(x+2)}

-----------------------------------------------------------------------------------
Cancel the factors
-----------------------------------------------------------------------------------
= \dfrac{1}{4(x+2)} \times \dfrac{1}{(x+2)}

-----------------------------------------------------------------------------------
Combine to single fraction
-----------------------------------------------------------------------------------

= \dfrac{1}{4(x+2)^2}



4 0
3 years ago
"the quotient of a number and 4"
ladessa [460]

Answer:

a number divided by 4

Step-by-step explanation:

a number = n (it's a variable used in equations.)

so n over 4, or n divided by 4

3 0
3 years ago
How many time larger is 9x10^-8 than 3x10^-12
kkurt [141]

Step-by-step explanation:

\frac{9 \times 10 {}^{ - 8} }{3 \times 10 {}^{ - 12} }

Apply Quoteint of Powers. Divide the intergers. serpately.

Note that Quotient of Powers is

\frac{a {}^{x} }{a {}^{y} }  = a {}^{x  - y}

So the answer is

3 \times 10 {}^{ - 8 + 12}  = 3 \times 10 {}^{4}

The answer is

3 \times 10 {}^{4}

or

30000

3 0
3 years ago
Read 2 more answers
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