Mathematics, 19.09.2019 02:30 Valduarte07

Me answer these 5 questions ! giving 32 points

Answers: 2

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Answer from: myaaa13754

6:14
24 min.
8:29
8:45
11:33

Answer from: fun1togo

Okay for the first one you have to add 2 hours and 43 minutes to 3:31. First you do the minutes
43+31= 74. Since there is 60 minutes in an hour you subtract 60 minutes from your minutes and add one more hour.

74-60=14 minutes
2+1= 3 hours.
Then you add those 3 hours to your original time

3+3=6. So then you add 6 hours to the 14 minutes and you get your time of
6:14

Now for number 2
You start walking at 12:48 and end at 1:11
And easy way go do this one is just add up until 1:11 so it would take 33 minutes to get there
Number 3
You start at 3:45 and end at 9:14
This Is another one you just add up too. So it'll be 5 hours and 29 minutes
Number 4
Subtract 41 minutes from 9:26
First I would subtract 26 minutes so it could be and even 9:00 and then I would subtract the last 15 minutes still remaining to get 8:45
Number 5
I would do the same except first subtract

Answer from: Quest

2x^2 -2x -12 = 02(x -3)(x +2) = 0see below for explanation

step-by-step explanation:

equation

you are asked to write the equation

expression = 0

using the given expression. when you do that, you have

2x^2-2x-12 = 0

factoring

you can see that each of the coefficients is even, so a factor of 2 can be removed immediately.

2(x^2 -x -6) = 0

if you multiply the binomials (x+a)(x+b), you get

(x +a)(x +b) = x^2 +(a+b)x +ab

this tells you the coefficient of x is the sum of two factors of the constant term. here, that means -1 is the sum of two factors of -6. we want to know those factors so we can factor the trinomial.

-6 = -1×6 = -2×3 = -3×2 = -6×1

the factor pair that sums to -1 is {-3, 2}, so our factorization is

2(x -3)(x +2) = 0

solutions

the solutions to this equation are the values of x that make the product zero. a product is zero only when only of the factors of the product is zero. here, that means

x - 3 = 0

x = 3 . . . add 3 to both sides of the equation

x +2 = 0

x = -2 . . . add -2 to both sides of the equation

the solutions to the equation are x=3 or x=-2. both of these values of x satisfy the equation—they make it be true.

Answer from: Quest

step-by-step explanation:

what was your answer?

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