3 years ago

Can you factor 9x^2+25?

Mathematics

1 answer:

shusha [124]3 years ago

3 0

9x^2+25 is not factorable

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It takes Max 5.5 minutes to do 60 pull ups which includes a break in between. It takes him 8 minutes to do 120 pull ups which in

Ivahew [28]

Answer: 648 pull-ups

Step-by-step explanation:

Given

Max take 5.5 minutes to do 60 Pull-ups with a break in between

Similarly, it took 8 minutes for 120 pull-ups

Suppose the time taken for a single pull-up and break is x and y minutes

So, it can be written

$\Rightarrow 60x+y=5.5\quad \ldots(i)\\\Rightarrow 120x+y=8\quad \ldots(ii)\\\\\text{Solve (i) and (ii) we get}\\\\x=\dfrac{2.5}{60}\ min \ or\ \ 2.5\ s\\\\y=3\ min$

Now, suppose max perform at this rate, and the total pull-ups are P in 30 minutes

$\therefore P\times \dfrac{2.5}{60}+3=30\\\\\Rightarrow P\times \dfrac{2.5}{60}=27\\\\\Rightarrow P=648\ \text{Pull-ups}$

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3 years ago

--5-2n = 8n + 25 What is the value of n?

lyudmila [28]

Answer:

-5-2n=8n+25

-5=6n+25

-30=6n

-5=n

hope this helps

have a good day :)

Step-by-step explanation:

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