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3 years ago

If it’s 5 outside and the temperature will drop 17 in the next six hours l how cold will it be

Mathematics

2 answers:

Katena32 [7]3 years ago

5 0

5-17= -12

it will be -12 degrees

allochka39001 [22]3 years ago

4 0

I think the temperature would be -12.

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What is 1/5 +2/4?the simplest form

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Answer:

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Step-by-step explanation:

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At the museum, 10% of the visitors were senior citizens. If there were 150 senior citizens , what was the total number of visito

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1500 visitors

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Simplify the expression. Write your answers in positive exponents only.

Pani-rosa [81]

after solving $\left(\frac{\left2x^{-7}y^7\right}{5x^2y^{-6}}\right)^{-3}$ we get $\frac{125x^{27}}{8y^{39}}$

Step-by-step explanation:

We need to simplify the expression:

$\left(\frac{\left2x^{-7}y^7\right}{5x^2y^{-6}}\right)^{-3}$

Solving

$=\frac{1}{\left(\frac{\left2x^{-7}y^7\right}{5x^2y^{-6}}\right)^{3}}\\\\=\frac{1}{\left(\frac{\left2y^{7+6}\right}{5x^{2+7}}\right)^{3}}\\=\frac{1}{\left(\frac{\left2y^{13}\right}{5x^{9}}\right)^{3}}\\=\frac{1}{\left(\frac{\left2^3y^{13*3}\right}{5^3x^{9*3}}\right)}\\=\frac{1}{\left(\frac{\left8y^{39}\right}{125x^{27}}\right)}\\We\,\,know\,\,\frac{1}{\frac{b}{a}}=\frac{a}{b}\\Applying the rule:\\=\frac{125x^{27}}{8y^{39}}$

So, after solving $\left(\frac{\left2x^{-7}y^7\right}{5x^2y^{-6}}\right)^{-3}$ we get $\frac{125x^{27}}{8y^{39}}$

Keywords: Exponents in fractions

Learn more about Exponents in fractions at:

#learnwithBrainly

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4 years ago

If the square of twice a number is 81, what is the number? I tried doing 2x^2=81 but that did not come out to the answer 4.5,-4.

Vlada [557]

If the number is n then

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square of 2n
(2n)²
that was your mistake, because (2n)²=4n², not 2n²

the result is 81
(2n)²=81
square root both sides
remember positive and negative roots
2n=+/-9
divide by 2
n=+/-4.5

n=4.5 or -4.5

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4 years ago

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sveta [45]

There are 28 squares in the box. Hope this helps you

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