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3 years ago

Can someone help with this please it confusing

Mathematics

1 answer:

zheka24 [161]3 years ago

6 0

Part (a)

Since point E is on segment AD, this means the slope of ED is the exact same as the slope of AD.

Use the slope formula to calculate the slope of AD.

m = (y2-y1)/(x2-x1)

m = (7-2)/(4-0)

m = 5/4

<h3>Answer: 5/4</h3>

====================================================

Part (b)

The same idea and steps apply as part (a)

<h3>Answer: 5/4</h3>

====================================================

Part (c)

The x coordinates are the same, so we subtract the y coordinates to find the distance between C and D, which is the length of segment DC.

7-2 = 5

<h3>Answer: 5 units</h3>

====================================================

Part (d)

This time, the y coordinates are the same. We'll subtract the x values

4-2 = 2

<h3>Answer: 2 units</h3>

====================================================

Part (e)

Same idea as part (d), just different numbers this time.

2-0 = 2

<h3>Answer: 2 units</h3>

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The length of a rectangular prism is 4√3 units. The height is 3√6 units. If the volume is irrational, which could be the measure

Jet001 [13]

Volume = length * height * width
= 4 qrt3 + 3 sqrt6 * w
= 12 sqrt18 w

let w = 2 sqrt50 then volume = 2*12 * sqrt 18*50 = 24*30 so this is rational

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C and D are rational
answer is B

8 0

3 years ago

Could anyone help me with this whole question? The bottom drop-down question options are, does or does not

Alina [70]

Answer:Values for the coefficient in the product k:

$a=b=c=d=3*10^8$ , so the first four boxes should be filled with the number "3"

Drop down arrow: "does"

Step-by-step explanation:

We perform all the products of wavelength time frequency indicated for the column of the quantity "k":

$a$ = $1 * 10^{-10} * 3\, * 10^{18} = 3 * 10^{-10+18} = 3 * 10^{8}$ =

$b=1 * 10^{-1}*3*10^9=3* 10^{-1+9}=3*10^8$

$c=600*10^{-6}*5*10^{11}=3000*10^{-6+11}=3000*10^5=3*10^3*10^5=\\=3*10^{3+5}=3*10^8$

$d=4*10^{-7}*7.5*10^{14}=30.0*10^{-7+14}=30*10^7=3*10*10^7=\\=3*10^{1+7}=3*10^8$

Therefore, all products of these different wavelengths and their associated frequencies render the exact same answer : $3*10^8$ , which means that as one of these quantities increase, the other one will decrease in the same proportion to give the same numerical answer.

This means that the two quantities are associated via inverse proportionality. As seen in the equation below, if the quantities "x" and "y" are related by inverse proportionality (shown as one equals a constant "A" divided by the other variable), their product x*y will give that constant value "A" (which in our case is $3*10^8$ .

$x=\frac{A}{y} \\x*y=A$