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3 years ago

Please help me. What is 26^3+75k/4-95.6^7*82 if k=25.6

Mathematics

1 answer:

Gwar [14]3 years ago

5 0

Answer:

omg that's so hard im still in 8th grade ;-;

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Simplify=1-81-1+31 Math matics

alexandr1967 [171]

Answer:

Step-by-step explanation:

1-81-1+31

-80-1+31

-81+31

-50

3 0

3 years ago

A fisherman traveled in a boat from point N upstream. After having traveled 6 km, he stopped rowing and 2 hour 40 min after fir

Vsevolod [243]

So.. the boat in still water runs at 9km/h, so that's its rate

going from N upstrea, going against the current's rate, you guessed it, if the stream has a rate "r", then the boat is going up at 9 - r

now, he started out at point N, and stop rowing, and backslid to point N
the way back he was just going at the current's speed or "r"

notice, he started from point N, went up 6km, then came back to point N, meaning, the distance one way is 6km, and back is the same 6km

now, since he started from point N, till he came back, the length of the whole trip forth and back is 2hrs and 40mins, or 160minutes

well, you know that d = rt
thus $\bf \begin{array}{lccclll}
&distance(km)&rate(kmph)&time(minutes)\\
&-----&-----&-------\\
\textit{from N}&6&9-r&t\\
\textit{back to N}&6&r&160-t
\end{array}$

I'd think you know how to get "r" by now

4 0

4 years ago

Read 2 more answers

40% of the students passed both exams. 80% of the students passed the second exam. how many students (in percent) who passed the

navik [9.2K]

50%. students (in percent) who passed the second exam also passed the first exam.

Let's imagine that there are 100 kids in the teacher's class. We know that 40 of them passed BOTH tests, and 80 passed the second test.

Because if they weren't, they wouldn't have passed the first test and consequently wouldn't have passed both, we can be sure that the group of students who passed BOTH tests is only made up of the 80 who passed the second test.

Thus, both tests were passed by 40 of the 80 pupils who passed the second one:

40/80 = 1/2 = 50%.

Find out more on Percentage at:

brainly.com/question/24877689

#SPJ4

7 0

1 year ago

If 3^-x=2 what does 3^2x equal?

marissa [1.9K]

Answer:

nice question...

so here we go

3^ -x = 1 / 3^x

so 1/ 3^x = 2 so 3^x = 1/2

we can write 3^2x as 3^x multiplied by 3^x right?..(law of exponents)

recall that 3^x =1/2

so now according to question we have to find the value of 3^2x = 1/2 * 1/2 = 1/4

Step-by-step explanation:

7 0

3 years ago

Read 2 more answers

Solve each one step equation, use your answers to navigate through the maze. Show your work on a separate page

mixas84 [53]

Answer:

Step-by-step explanation:

I think thats how its done, sorry for messy handwriting

5 0

3 years ago