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3 years ago

Help help help help help help help

Mathematics

2 answers:

katrin [286]3 years ago

6 0

Answer:

idk

Step-by-step explanation:

Virty [35]3 years ago

3 0

Marvin has got to go 20 blocks south because think of it as a drawing. Each line is 10 blocks. He will end up back in line with the bakery and all he has to go is back down 20 blocks
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What is the exact solution for 75(1/5)^(x/5)=3

12345 [234]

Answer:

$\large \boxed{x = 10}$

Step-by-step explanation:

$\begin{array}{rcll}75\left (\dfrac{1}{5}\right )^{\dfrac{x}{5}} & = & 3& \\\\\left (\dfrac{1}{5}\right )^{\dfrac{x}{5}} & = & \dfrac{3}{75}&\text{Divided each side by 75} \\\\\left (\dfrac{1}{5}\right )^{\dfrac{x}{5}} & = & \dfrac{1}{25}&\text{Simplified} \\\\\left (\dfrac{1}{5}\right )^{\dfrac{x}{5}} & = &25^{-1}&\text{Applied exponent rule} \\\\\left (\dfrac{1}{5}\right )^{\dfrac{x}{5}} & = &\left (5^{2} \right )^{-1}&\text{Converted 25 to base 5} \\\\\end{array}$

$\begin{array}{rcll}\left (5^{-1}\right )^{\dfrac{x}{5}} & = &\left (5^{2} \right )^{-1}&\text{Applied exponent rule} \\\\5^{-\dfrac{x}{5}} & = &5^{-2}&\text{Multiplied exponents} \\\\-\dfrac{x}{5} & = &-2 & \text{Equated exponents}\\\\x & = & \mathbf{10} & \text{Multiplied each side by -2}\\\end{array}\\\text{The exact solution is $\large \boxed{\mathbf{x = 10}}$}$

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4 years ago

How do you know if it is a function

Mrrafil [7]

Answer:

In a function the x can't repeat itself.

Step-by-step explanation:

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3 years ago

How many real solutions does the equation have? K^2=-89

bonufazy [111]

Answer:

0 real solutions

Step-by-step explanation:

This problem can be solved by simply looking at the sign in front of 89. Since it is a negative, nothing squared can equal it.

In other words, when a number is squared, the product will never be negative. This is because even when two negatives are multiplied by each other, the negatives cancel each other out.

Examples:

2^2 = 4

-2^2 = 4 (not -4)

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4 years ago

Please help me with this.

NARA [144]

Answer:

2x^3-5

Step-by-step explanation:

8x^3-10x^2-25x / 4x^2+5x

2x^3-10-5

2x^3-5

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3 years ago

Louis wants to make a scale drawing of his bathroom. The room is 12 feet long by 8 feet wide. If he uses a scale of 1cm = 4ft, h

Natali [406]

Answer:

Step-by-step explanation:

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3 years ago