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4 years ago

Describe when to use a series and when to use an equation.

Mathematics

1 answer:

Genrish500 [490]4 years ago

3 0

Answer:

A series is used only for n taking the values of natural numbers

But a function or an equation is used for all real values of x. It is not necessary that x should be a natural number.

Step-by-step explanation:

The equation is used when domain is all real values

f(x) = 3x+5 is valid for all x real. x can take values as irrational also, negative or fractions.

But in a series, such as 2+3n, we have the restriction for domain n as only the set of all natural numbers

Here n cannot take negative or 0 or fractions or irrational numbers.

Thus the domain is the one which makes the difference of using an equation and a series.

A series is used only for n taking the values of natural numbers

But a function or an equation is used for all real values of x. It is not necessary that x should be a natural number.

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PLEASE HELP OMG

kirill [66]

Y = mx + b

7x + 8y = -12
Subtract 7x from both sides
8y = -7x - 12
Divide each side by 8
y = -7/8x - 12/8
Simplify
y = -7/8x - 3/2

So besides simplifying, if I’m doing this correctly, it should be correct.

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3 years ago

the perimeter of a rectangle can be found by using the formula P=21+2w. What is the width of the rectangle if the perimeter is 1

mixas84 [53]

$\begin{gathered} P=2l+2w \\ \text{If l=50 and P=100, then:} \\ 100=2(50)+2w\Rightarrow0=2w\text{ !!!!} \end{gathered}$

Since this can't happen, let's suppose that P=150, then:

$\begin{gathered} P=2l+2w \\ \Rightarrow150=2(50)+2w \\ \Rightarrow150=100+2w \end{gathered}$

Now we have to move the 100 to the other side of the equation with a negative sign to get this:

$\begin{gathered} 150=100+2w \\ \Rightarrow150-100=2w \\ \Rightarrow50=2w \end{gathered}$

Finally, to get w, we move the 2 that's multiplying to the other side dividing the 50:

$\begin{gathered} 50=2w \\ \Rightarrow\frac{50}{2}=w \\ \Rightarrow w=25 \end{gathered}$

Therefore, the width of the rectangle would be 25 ft if the perimeter is 150ft, and we can see how the rectangle would look:

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2 years ago

PLEASE ANSWER ASAP!!!!!!!!!!!! I WILL GIVE BRAINLIEST!!!!!!!!

Mazyrski [523]

Answer:

Y=5x

Step-by-step explanation:

The first the options aren’t even whole numbers

6 0

3 years ago

Read 2 more answers

Solve each literal equation for 'K'.<br> a) T=4K/M b) bm-Kn=14

77julia77 [94]

a) T = 4K / M

1) multiply both sides by M => TM = 4K

2) divide both sides by 4 => K = TM / 4

Answer: K = TM / 4

b) bm - Kn = 14

1) add Kn to both sides => bm = 14 + Kn

2) subtract 14 from both sides => bm - 14 = Kn

3) divide both terms by n => K = [bm - 14] / n

Answer: K = [bm - 14] / n

6 0

3 years ago

Plz help me I am struggling I will give you 15 pts

motikmotik

Answer: x = 2, y = 18

Step-by-step explanation:

Because if you go to 6 on the y axis and then keep going up the line until you meet with a number that's how you go get your answer. Hope this helped you!!

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3 years ago

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