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iren [92.7K]
3 years ago
13

John is 70 years younger than Sharon. Sharon is 4 times as old as John.

Mathematics
1 answer:
Ksju [112]3 years ago
8 0

Answer:

j = 23 years-old s = 92 years old.

Step-by-step explanation:

j = s - 70

s = 4j

j = 4j - 70

-3j = -70

j = 70/3

j = 23

s = 92

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The row-echelon form of the augmented matrix of a system of equations is given. Find the solution of the system.
pantera1 [17]

Answer:

345

Step-by-step explanation:

8 0
3 years ago
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Determine if the given functions are even, odd or neither. f(x) = -2x2 - 7 and g(x) = 2x2 + 3
Anettt [7]
Answer:

It's odd.

Explanation:

A function is odd when <span><span>f<span>(−x)</span></span>=−<span>f<span>(x)</span></span></span>

<span><span>f<span>(−x)</span></span>=6<span><span>(−x)</span>3</span>−2<span>(−x)</span></span>

<span>=−6<span>x3</span>+2x</span>

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Thus, the function is odd.

If a function is odd, then it is symmetric over the x-axis.

3 0
4 years ago
Suppose that g (x) varies inversely with x and g (x)=0.2 when x = 0.1.
CaHeK987 [17]

Answer : 0.0125

Suppose that g (x) varies inversely with x and g (x)=0.2 when x = 0.1.

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Where k is constant of proportionality

g (x) varies inversely with x , so g(x) = \frac{k}{x}

g (x)=0.2 when x = 0.1

Plug in the values and solve for k

g(x) = \frac{k}{x}

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Multiply 0.1 on both sides

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so g(x) = \frac{0.02}{x}

Now we need to find g(x) when x= 1.6

Plug in 1.6 for x  and find out g(x) in the above equation

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4 0
3 years ago
Solve by Elimination
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Answer:

D

Step-by-step explanation: because W in the equation is the number of weeks she paid for the self defense class. and the 12.50 would be the registration fee because that  is added on top of the number of 40w.

40w + 12.50 = 492.50

         -12.50       -12.50

40w = 480.00

w = 12 which is how many weeks she paid

5 0
3 years ago
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