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3 years ago

8

Select proportional or not proportional to correctly classify each pair of ratios. 8/20 and 20/80

2 answers:

Scorpion4ik [409]3 years ago

8 0

They are not proportinal

cross mulitiply and see if you get the same number on each side

8(80) = 20(20)

640= 400 Not equal

never [62]3 years ago

8 0

They are not proportional.

I took the test and i got it right so do not proportional.

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<img src="https://tex.z-dn.net/?f=y%27%3D%20%5Cfrac%7B1%7D%7B6%7D%20x%281-%20y%5E%7B2%7D%20%29" id="TexFormula1" title="y'= \fra

svetlana [45]

$\dfrac{\mathrm dy}{\mathrm dx}=\dfrac16x(1-y^2)$
$\displaystyle\int\frac{\mathrm dy}{1-y^2}=\frac16\int x\,\mathrm dx$
$\dfrac12\ln|1+y|-\dfrac12\ln|1-y|=\dfrac1{12}x^2+C$
$\ln\left|\dfrac{1+y}{1-y}\right|=\dfrac16x^2+C$
$\dfrac{1+y}{1-y}=e^{x^2/6+C}$
$-1+\dfrac2{1-y}=Ce^{x^2/6}$
$y=1-\dfrac2{1+Ce^{x^2/6}}$

Given that $y(0)=7$ , we get

$7=1-\dfrac2{1+Ce^0}\implies C=-\dfrac43$

so the particular solution is

$y=1-\dfrac2{1-\frac43e^{x^2/6}}$

8 0

4 years ago

The path of a ball in flight is given by h(x) = -0.23(x – 3.4)^2 + 4.2 where x is

viva [34]

Answer:

B

Step-by-step explanation:

It’s b

4 0

3 years ago

Which must be true? BMZ CMZ ZBM ZCM

Shalnov [3]

The answer is ZBM.

Have a lovely day!

6 0

4 years ago

Find the area of a trapezoid if the altitude is 6 inches and the median is 8 inches. (Hint: Recall that the median of a

zlopas [31]

Answer:

48 sq. units

Step-by-step explanation:

The area of a trapezoid is given by half sum of the bases multiplied by the height

$=\frac{1}{2} (a+b)h$

where a and b are the two parallel sides of the trapezoid and h is the height or amplitude of the trapezoid

But you are aware that, the median of a trapezoid is equal to half the sum of the bases, thus the first part of the formulae is covered by the median

$Median=\frac{1}{2} (a+b)$

Hence area, A, of a trapezoid is simplified to product of median and amplitude

$A=amplitude*median\\\\A=6*8=48sq.units$

3 0

4 years ago

Read 2 more answers

Answer Please this is really important

trapecia [35]

Answer:

B) Parallel

Step-by-step explanation:

The lines have the same slope of $\frac{4}{3}$ . This makes the lines parallel.

Hope it helps!

3 0

3 years ago

Read 2 more answers