To write a fraction as a percent, first remember that a percent is a ratio of a number to 100. If we want to write 5/8 as a percent, we need to find a fraction equivalent to 5/8 that has a 100 in the denominator. We can do this by setting up a proportion.
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<h3 /><h3>8n = 500</h3><h3>÷8 ÷8</h3><h3> n = 62.5%</h3><h3>Therefore, 5/8 is equal to 62.5%.</h3><h3 />
To write a fraction as a decimal, we can simply divide the numerator by the denominator.
5 ÷ 8 = 0.625
Therefore, 5/8 is equal to 0.625.
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If we call the number "x" then:
x*25%=21
x*25/100=21
x=21*4
x=84
Hope this helps. :)
Y = -4x - 2
P (-16, -11)
a = -4, b = 0, c = -2
m = -a/b
m = -(-4)/(-2)
m = 4/(-2)
m = -2
y-yo = m(x-xo)
y-(-11) = -2[x-(-16)]
y+11 = -2(x+16)
y+11 = -2x-32
2x+y+11+32 = 0
2x+y+43 = 0
A outra questão é semelhante.