3 years ago

There are 40 nickels in every standard coin roll. that is the constant of proportionality?

Mathematics

1 answer:

liraira [26]3 years ago

4 0

For that question the answer is 40nickels/standard coin

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ZanzabumX [31]

Note that the scale factor of B to A is (4 / 8) = 1/2

So....the volume of B =

Volume of A * (scale factor)^3 =

2720 * (1/2)^3 =

2720 * 1/8 =

340 cm^3

Hope this helps :)

7 0

3 years ago

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The point-slope form of the equation of a line that passes through points (8, 4) and (0, 2) is

Sladkaya [172]

Answer:

y= x-4

Step-by-step explanation:

5 0

4 years ago

If point C is between A and B, then AC + CB=_____ A. ABC B. BC C. AB D. CA

velikii [3]

The answer is C. AB. The total line segment is ACB, or AB, because C is in between A and B. If you are adding AC and CB together, you are adding the two parts of the line together.

I hope this helps :)

7 0

3 years ago

Line b passes through the Point(-3, -4) and has a slope of -1/2. What is the equation of Line b in standard form?

Anna11 [10]

Answer:

$x+2y=-11$

Step-by-step explanation:

Slope intercept form of a line is given by:

$y=mx+b$

Where

m is the slope and b is the y-intercept

Given slope is $-\frac{1}{2}$

We can write:

$y=-\frac{1}{2}x+b$

Now to find b, we replace x with -3 and y with -4, given, so we have:

$y=-\frac{1}{2}x+b\\-4=-\frac{1}{2}(-3)+b\\-4=\frac{3}{2}+b\\b=-5.5$

So, the equation is:

$y=-\frac{1}{2}x-\frac{11}{2}$

Now,

The standard form is given by:

$Ax+By=C$

So, we take x and y to left side and the constant to right side. Rearranging, we get:

$y=-\frac{1}{2}x-\frac{11}{2}\\2y=-x-11\\x+2y=-11$

The first answer choice is right.

3 0

3 years ago

Maurice puts $25 in his savings account every month. use the course tools calculator to find how much money he will save in a ye

telo118 [61]

If he puts in $25 every month and there are 12 months in one year, just multiply 25 by 12 to find that Maurice will save $300 a year.

5 0

3 years ago

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