3 years ago

7/8 x C for c = 8 what’s the answer?

Mathematics

1 answer:

Olin [163]3 years ago

3 0

It is simple. 7/8 * 8 which is 7

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A line passes through (4, 5) and (8, 9). Which equation best represents the line?

Lerok [7]

We can calculate the slope of this line passing through (4,5) and (8,9) like this:
m = (y2 - y1)/(x2 - x1)
m = (9 - 5)/(8 - 4)
m = 4/4
m = 1
so the slope is 1, and now we can use the equation of one point and the slope to write the line's equation:
y - y1 = m(x - x1)
y - 5 = 1*(x - 4)
y - 5 = x - 4
y = x + 1
that is the equation of the line, its slope is 1 and the y-intercept is 1

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3 years ago

If r> 0 and r^t = 6.25r^t+2, then r =

Firdavs [7]

I'm going to use n instead of t

rⁿ=6.25rⁿ+2
minus rⁿ both sides
0=5.25rⁿ+2
minus 2 both sides
-2=5.25rⁿ
divide both sides by 5.25
-2/5.25=rⁿ
take the nth root of both sides
$\sqrt[n]{\frac{-2}{5.25}}= \sqrt[n]{r^n}$
$\sqrt[n]{\frac{-2}{5.25}}= r$

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Firlakuza [10]

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I tried to help but couldn’t :)

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