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2 years ago

Which of the following expressions are equivalent to -1/2 ?

Mathematics

1 answer:

r-ruslan [8.4K]2 years ago

5 0

Answer:

there are no other expressions....

Step-by-step explanation:

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Mahesh charges $21.50 a month for cutting his neighbor's lawn. How much money will he make in a year? A. $258.00 B. $215.00 C. $

Diano4ka-milaya [45]

Answer:

A. $258.00

Step-by-step explanation:

There are 12 months in a year so you will simply have to multiply $21.50 by 12

21.50 x 12

258

6 0

3 years ago

1/3 divided by 8??????????

Serga [27]

Answer: 1/24

Step-by-step explanation: if you take 8 and change it to 1/8, you can multiply it by 1/3 and 1x1 is 1 and 8x3 is 24 so it’s 1 over 24 or 1/24

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2 years ago

Determine whether each function represents exponential growth or decay

Karo-lina-s [1.5K]

Answer: Depends on the function but to figure this out you look for the growth factor in the equation is greater than 1

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2 years ago

Maria's father is 20 years older than Maria Write an expression that will represent the age of Maria's father use a variable and

abruzzese [7]

Let's make "x" the variable for Maria's age.

And since Maria's father is 20 years older than Maria:

Age of Maria's Father = x + 20.

4 0

3 years ago

Suppose it takes 4 hours for a certain strain of bacteria to reproduce by dividing in half. If 70 bacteria are present to begin

Sauron [17]

Answer:

1 day: 4480

2 days: 8960

3 days: 13440

$f^{-1}(x) = \sqrt{\frac{x -4}{4}}$ ---- function inverse

Step-by-step explanation:

Given

$f(x) = 70 \cdot 64x$

Solving (a): The amount present after 1 day.

Here, $x =1$

So:

$f(1) = 70 \cdot 64*1= 4480$

Solving (b): The amount present after 2 days.

Here, $x =2$

So:

$f(2) = 70 \cdot 64*2= 8960$

Solving (c): The amount present after 3 days.

Here, $x = 3$

So:

$f(3) = 70 \cdot 64*2= 13440$

Solving (d): The inverse function of:

$f(x)= 4x^2 + 4$

Replace f(x) with y

$y= 4x^2 + 4$

Swap x and y

$x= 4y^2 + 4$

Rewrite as:

$4y^2 = x -4$

Divide by 4

$y^2 = \frac{x -4}{4}$

Take square roots

$y = \sqrt{\frac{x -4}{4}}$

Replace y with function inverse

$f^{-1}(x) = \sqrt{\frac{x -4}{4}}$

6 0

2 years ago