3 years ago

If M is the midpoint of XY and XM=2x+5 and MY=3x-1, then what is the length of MY?

Mathematics

1 answer:

taurus [48]3 years ago

5 0

Answer:

If M is mid point then XM = MY

2x +5 = 3x -1

2x - 3x = -1 - 5

-x = -6....so

x = 6

MY = 3(6) -1

MY = 18 -1

MY = 17

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Let f(x) = (5)^x+1 .Evaluate f (-3) without using a calculator

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$f\left(-3\right)=\frac{126}{125}$

Step-by-step explanation:

Given

$f\left(x\right)\:=\:\left(5\right)^x+1$

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$f\left(-3\right)\:=\:\left(5\right)^{\left(-3\right)}+1$

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$f\left(-3\right)=\frac{1\cdot \:\:125}{125}+\frac{1}{125}$

$\mathrm{Since\:the\:denominators\:are\:equal,\:combine\:the\:fractions}:\quad \frac{a}{c}\pm \frac{b}{c}=\frac{a\pm \:b}{c}$

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