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Korvikt [17]
2 years ago
12

If r = 12, what is the value of t?

Mathematics
2 answers:
Korolek [52]2 years ago
6 0
Just replace all variables that r with the variable r equivalent.

So, the expression 9 + r * 3 becomes 9 + 12 * 3

Use the order of operations to solve.

9 + 12 * 3
9 + 36 <--- The order of operations says that multiplication and division
                   have a higher precedence than addition and subtraction.
45 <--- Simply add.

So, the answer is 45.
Ede4ka [16]2 years ago
3 0
Due to pemdas you would have to start with multiplication. 3×12= 36. Then you do addition which would be 9+36= 45.
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Indicate whether the function represents an exponential growth or decay.
svetoff [14.1K]

Answer:

1) decay

2) growth

3) growth

Step-by-step explanation:

A generic exponential function can be written as:

f(x) = A*(r)^x

Where:

A is the initial amount of something.

r is the rate of growth.

x is the variable, usually, represents time.

if r > 1, we have an exponential growth.

if r < 1, we have an exponential decay.

1) f(x) = (3/4)^x

in this case we have:

A = 1

r = (3/4) = 0.75

Clearly, r < 1.

Then this is an exponential decay.

2) f(x) = (1/6)*4^x

In this case we have:

A = (1/6)

r = 4

Here we have r > 1.

Then this is an exponential growth.

3) f(x) = (1/4)*(5/2)^x

in this case we have:

A = 1/4

r = 5/2 = 2.5

here we have r > 1, then this is an exponential growth.

8 0
3 years ago
Match the following items by evaluating the expression for x = -2.
Sloan [31]

Answer:

1)  -4

2) -3

3) 1

4) -2

5) 4

Step-by-step explanation:

According to the information given in the exercise, the value of "x" is:

x = -2

Then:

1) You must substitute  x = -2 into the expresion x-2:

=(-2)-2

Now, you must evaluate:

=-4

2) You have to substitute the given value of "x" into the second expression:

x-1=(-2)-1

Finally, evaluating, you get the following result:

=-3

3) According to the Zero exponent Rule, any non-zero number with an exponent of zero is equal to 1.

Then, substituting x = -2 into the expression x^0 and then evaluating, you get:

x^0=(-2)^0=1

4) By definition:

 a^1=a

Then, substituting   x = -2 into x^1 and evaluating, you get:

x^1=(-2)^1=-2

5) Since:

 a^2=a*a

When you substitute the given value of "x" into the last expression and then  you evaluate, you get:

x^2=(-2)^2=(-2)(-2)=4

4 0
2 years ago
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inysia [295]

Answer:

.5

Step-by-step explanation:

The slope is what you multiply x by in a linear equation

7 0
3 years ago
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Vilka [71]
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5 0
3 years ago
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35" ÷  1  3/4
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I used a calculator and used 1.75 instead of 1  3/4

  


6 0
3 years ago
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