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elena-s [515]
3 years ago
8

It takes Nathan 67.5 minutes to walk 4.5 miles. Determine the average time it takes for him to

Mathematics
1 answer:
sesenic [268]3 years ago
8 0
1 mile per 15 minutes
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(0,8) is the ONLY solution to the system of equations:
Alja [10]

Answer:

False, there are infinite solutions

Step-by-step explanation:

Try solving this

3y - 6x = 24

8 + 2x = y

3(8 + 2x) - 6x = 24

24 + 6x - 6x = 24

24 = 24  true

4 0
3 years ago
The price of an item has risen to $120 today. Yesterday it was $40. Find the percentage increase.
Snezhnost [94]

Answer:

200%

Step-by-step explanation:

If $40 is 100% then multiply it by 3 to get $120

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3 years ago
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For a fixed amount of a gas at a constant temperature, the volume of the gas is inversely proportional to its pressure. At a pre
Veronika [31]

we know that

A relationship between two variables, x, and y, represent an inverse variation if it can be expressed in the form y*x=k or y=k/x

Let

x-------> the pressure in PSI

y------> the volume of the gas in cubic inches

In this problem we have the point (30,600)

so

x=30\ psi\\y=600\ in^{3}

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y*x=k

substitute the values of x and y

600*30=k

k=18,000\ lb*in

the equation is

y=18,000/x

therefore

<u>the answer is</u>

y=18,000/x

4 0
3 years ago
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How can the quotient of powers law be used to show that a negative exponent is equivalent to the reciprocal
Kay [80]

Answer:Thus,  (-3)-4 = 1/(-3)4.

Step-by-step explanation:

Negative exponents have the following property:   n-m = 1/nm   OR   1/n-m = nm

So for  (-3)-4 ,  n= -3 and -m= -4 (or m= 4).

Thus,  (-3)-4 = 1/(-3)4.

8 0
2 years ago
√x²+2√3 +3 =0<br><img src="https://tex.z-dn.net/?f=%20%5Csqrt%7Bx%5E%7B2%7D%20%2B%202%20%5Csqrt%7B3%7D%20%20%2B%203%7D%20%20%3D%
forsale [732]

Square both sides:

x^2+2sqrt3+3=0

x^2=-2sqrt(3)-3

x=sqrt(2sqrt(3)+3)i

or

x=-sqrt(2sqrt(3)+3)i

5 0
3 years ago
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