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3 years ago

Is this relation a function?

Mathematics

1 answer:

jeka57 [31]3 years ago

4 0

Answer:

Step-by-step explanation:

so i cant actually see the picture on my school chromebook, but if only one x matches up to one y, then yes. multiple x's can go to a single y

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The value of y varies directly with x, and y = 343 when x = 49. Find y when x = 8

Ivan

$\bf \qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array}\\\\ -------------------------------\\\\ \textit{we also know that } \begin{cases} y=343\\ x=49 \end{cases}\implies 343=k49\implies \cfrac{343}{49}=k \\\\\\ 7=k\qquad therefore\qquad \boxed{y=7x} \\\\\\ \textit{when x = 8, what is \underline{y}?}\qquad y=7(8)\implies y=56$

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4 years ago

If a musician uses his credit card to pay for a new violin that costs $2,900 and does not pay on it until the second month, what

xenn [34]

Solution:

1. Cost of a new Violin that is bought by the musician = $ 2900

Monthly interest charge = 3.35 %

If you will find the compound interest or simple interest for a month, they both will be same for a month.

Simple interest =

$\frac{Principal \times Rate \times Time}{100}$

$=\frac{2900 \times 3.35 \times 1}{ 100}\\\\ =29 \times 3.35\\\\ =97.15$

Interest paid at the end of first month = $ 97.15

2. Loan Amount = $ 3,500

Annual interest = 8 %

Time period = 2 years= 24 months

As , we have to find the total payback for two years, at 8% annual interest with monthly payments .we will use the formula of Amount in terms of compound interest here.

Formula for Amount

Amount= $Principal (1 +\frac{Rate}{100})^{time}]$

$=3500 \times [(1+\frac{8}{1200})^{24}]\\\\ = 3500 \times [(1.0066)^{24}]\\\\= 3500 \times 1.1710 \\\\ =4098.58$

Total payback after 2 years = $ 4098.58

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4 years ago

Factor the greatest common factor: 9a4b3 + 24a3b2 − 15a2b.

skelet666 [1.2K]

I couldn't format this properly from my phone, so I used a solver, sorry :( hope this helps tho...

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3 years ago

What does dependent and independent variables mean

denpristay [2]

Answer:

independent is the y value or the value that changes at a steady rate no matter what, the dependent variable or x is the variable that is subject to change and is dependent on the y value to find a pattern

Step-by-step explanation:

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3 years ago

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Order numbers from least to greatest 16,4, 1.64, 1.6, 16.099

Paladinen [302]

These are from least to greatest 1.6,1.64,16,4,16.009

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3 years ago

Read 2 more answers