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3 years ago

(a^2-b)^3

Mathematics

1 answer:

Ganezh [65]3 years ago

7 0

-1 is correct answer because
a= -2
b= 5 then
(-2^2-5)^3
(4-5)^3
(-1)^3
-1

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Add the two equations 2x+6 and 6x-1

kati45 [8]

Answer:

The sum of the two equations is 8x + 5 and the value of x is -5/8

Step-by-step explanation:

Let's add these two equations and solve for x:

2x + 6 + 6x - 1 = 0

8x + 5 = 0

8x = -5

x = -5/8

The sum of the two equations is 8x + 5 and x = -5/8

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3 years ago

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Please help me with this question??!!! When is cherl's birthday?

natita [175]

July 16 is her birthday.
explanation;
there are only two dates with unique numbers; may 19 or june 18. therefore if bernard was given a date of either 18 or 19, he’d know right away. albert then says bernard doesn’t know which means the month he was given wasn’t may and/or june. bernard has this much figured out so far, and if he had been told 14 he wouldn’t know the answer as there are still two forteens left (july and august) leaving july 16, august 15, & august 17. bernard must have been given the number 16, because when albert says he knows too, that would rule out August, which still has two remaining dates.

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4 years ago

How many live in the central region?

sveta [45]

Answer:

10,648

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6 0

3 years ago

After the fraction x plus 2 all over 3 minus the fraction x plus 1 all over 2x have been combined using the least common denomin

kirill115 [55]

I'm pretty sure the answer is 2x2 + x -3

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4 years ago

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A university professor asked his class of 42 students when they had studied for his class the previous weekend. There responses

Basile [38]

ANSWERS:

a) 16 students

b) 25 students

c) 2 students

STEP BY STEP:

There are 42 students in total. This question can be solved by "Principal of Inclusion and Exclusion"

Question a)

The students that studied on Sunday in total with overlaps is 30. To figure out the students that ONLY studied on Sunday you need to first minus the overlaps in the combos:

the combos:

3, 10, 6, 2

Since the last combo included all of the other dates, we need to minus it:

1, 8, 4, 2

Now we can use the total of Sunday and minus the combos that includes Sunday:

30 - (4 + 2 + 8) = 16 students

Question b)

To figure out all the students that only studied on ONE day, not 2 not 3, just one day. We need to figure out the students that studied for Saturday and Friday using the same method before for figuring out Sunday:

Friday: 9 - 4 - 1 -2 = 2 students

Saturday: 18 - 1 - 2- 8 = 7 students

and now add them all together: 2 + 7 + 16 = 25 students

That is the total number of students that studied on one day.

Question c)

Now for the numbers of students that didn't study... We can just use the total to minus everything else!

42 - (25 + 1 + 4 + 8 + 2) = 2 students!!!

And thats all done! If you still don't get it, please ask!

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3 years ago