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3 years ago

56 friends share 7 melons equally. What fraction of a melon does each friend get?

Mathematics

1 answer:

Sliva [168]3 years ago

7 0

Answer:

Step-by-step explanation:

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

rewona [7]

Answer:

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

Step-by-step explanation:

Given

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

Putting x = -3 to find f(-3)

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

$5^{-3}=\frac{1}{125}$ ∵ $\mathrm{Apply\:exponent\:rule}:\quad \:a^{-b}=\frac{1}{a^b}$

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

$\mathrm{Convert\:element\:to\:fraction}:\quad \:1=\frac{1\cdot \:125}{125}$

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

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

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

$f\left(-3\right)=\frac{126}{125}$ ∵ $1\cdot \:125+1=126$

Thus,

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

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3 years ago

What is the reciprocal of 2/7

sineoko [7]

Answer:

the reciprocal of 2/7 is 7/2. you just switch the numbers

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2 years ago

Help again please...

xeze [42]

Answer:

Step-by-step explanation:

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Which of the following situations is best represented by the equation y = 15x ?

IrinaK [193]

Answer:

B.) There were 15 more questions on the test than the last test.

Step-by-step explanation:

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3 years ago

Which of the following is a regular quadrilateral

irga5000 [103]

Answer:

(B) square

Step-by-step explanation:

Square (regular quadrilateral): all four sides are of equal length (equilateral), and all four angles are right angles.

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2 years ago

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