3 years ago

Bro THIS GIVIN ME A HEADACHEEEEEEE. help pls LOL

Mathematics

1 answer:

Anna35 [415]3 years ago

7 0

School is for ugly people

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i have two questions. Is y= (4 2/3) x proportonal? and is y= 3(x - 1) proportional? If it’s proportional, what’s the constant va

Dmitrij [34]

$\bf \qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad y=kx\impliedby \begin{array}{llll} k=constant\ of\\ \qquad variation \end{array} \\\\[-0.35em] \rule{34em}{0.25pt}\\\\ y = 4\frac{2}{3}x\qquad \qquad yes\qquad \checkmark\qquad \qquad k = 4\frac{2}{3} \\\\[-0.35em] ~\dotfill\\\\ y=3(x-1)\implies \stackrel{\textit{distributing}}{y=3x-3}\qquad \qquad yes\qquad \checkmark \qquad \qquad k=3$

bear in mind that, direct proportional equations have a y-intercept.

for y = kx, is pretty much y = kx + 0, where 0 = y-intercept.

and the "k" constant of proportionality, is pretty much just its slope.

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3 years ago

Write 1:2 as any two equivalent ratios for each ratio.

FrozenT [24]

Answer: 1:2= 2:4,3:6

Step-by-step explanation: example 5 by 10 0.5

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2 years ago

Question 9 of 10<br> Which polynomial represents the difference below?<br> (8x2 +9) - (3x2 + 2x + 5)

koban [17]

Step-by-step explanation:

= (8x² + 9) - (3x² + 2x + 5)

= 8x² + 9 - 3x² - 2x - 5

= 5x² - 2x + 4

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3 years ago

Which number is closest to √18

Mars2501 [29]

Answer:

4.2 or 4

Step-by-step explanation:

√18 = 4.24264068712

or 4.2

or 4

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3 years ago

The sales tax for an item was 12.80 and it cost 320 before tax

Arlecino [84]

Answer:

Step-by-step explanation:

Divide the tax by the pre-tax price =

12.80/320 = .04 or 4%

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3 years ago