3 years ago

Select the correct answer

Mathematics

1 answer:

melisa1 [442]3 years ago

7 0

Answer:

Step-by-step explanation:

$(a^{m})^{n}=a^{m*n}\\\\a^{m}*a^{n}=a^{m+n}\\\\a^{-m}=\frac{1}{a^{m}}\\\\\\(6n^{-5})(3n^{-3})^{2}=(6n^{-5})*3^{2}*n^{-3*2}\\\\=6n^{-5}*9*n^{-6}\\\\=6*9*n^{-5 +(-6)}\\\\=54n^{-11}\\\\=\frac{54}{n^{11}}$

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y = ax - b gives the height y of an angled ladder, x ft from its base. Find a formula for x in terms of y.

const2013 [10]

Answer:

x=(y+b)/a

Step-by-step explanation:

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4 years ago

The 6th grade science teacher gives a test every 12 days and the math teacher gives a test every 9 days. Today, both the science

Y_Kistochka [10]

In 36 days will the science and math teachers both give tests on the same day again.

<u>Step-by-step explanation:</u>

Here we have , The 6th grade science teacher gives a test every 12 days and the math teacher gives a test every 9 days. Today, both the science and math are giving tests. We need to find In how many days will the science and math teachers both give tests on the same day again . Let's find out:

It's given that science teacher gives a test every 12 days and the math teacher gives a test every 9 days . In order to find the number of days after which they'll give test at same day , we will find LCM of 12 & 9 . i.e.

⇒ $12(1)=12\\12(2)=24\\12(3)=36$ and ,