3 years ago

How do you identify independant or dependant variable in a function word problem?

1 answer:

8 0

Independent variable - represents a quantity that is being manipulated

dependent variable- represents a quantity whose value depends on how the independent variable is manipulated.

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Find the indicated sum. Select your choice and click Submit to check your answer.

Ivahew [28]

Answer:

$S_4=50$

Step-by-step explanation:

Sum Of Arithmetic Sequence

Given an arithmetic sequence

$a_1,\ a_1+r,\ a_1+2r,....,\ a_1+(n-1)r$

The sum of the n first terms is

$\displaystyle S_n=\frac{(a_1+a_n)n}{2}$

Or equivalently

$\displaystyle S_n=\frac{[2a_1+(n-1)r]n}{2}$

The given sequence is

5, 8, 11 ...

We can see the common difference between terms is r=3

We are asked to find the sum of the terms 2 to 5, it means that

$a_1=8, n=4, r=3$

$\displaystyle S_4=\frac{[2(8)+(4-1)3]4}{2}$

$\displaystyle S_4=\frac{100}{2}$

$\boxed{S_4=50}$

3 0

3 years ago

You are selling tickets to a play. You have sold (3t + 2) tickets for $5 each and

kati45 [8]

Answer:

a.) 5(3t+2)+ 7(2t+5)

b.) 15t+10+14th+35

c.) $132

Step-by-step explanation:

a.) 5(3t+2)+ 7(2t+5)

b.) 15t+10+14th+35

Simplify to :

29t+45

c.) Substitute

29(3) +45

87+45=132

$132

8 0

3 years ago

Read 2 more answers

What is 79.623 rounded to the nearest hundred??

kondaur [170]

79.623 rounded to the nearest whole would be 80

8 0

3 years ago

What is the value of f(−1) when f(x) = 2x + 2 <br><br> f(−1)=

Elza [17]

F(-1)=2*(-1)+2
f(-1)=2-2
f(-1)=0

5 0

3 years ago

What is the area of this circle given a radius of 2 in?

Serjik [45]

2
The answer is 12.57 in

4 0

3 years ago