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konstantin123 [22]
3 years ago
10

Wats the correct answer here

Mathematics
2 answers:
marta [7]3 years ago
8 0
It is 10 hours and 20 minutes because if you round 7:50 to 8:00 and count from 8:00 to 5:20 you have 10 hours and 20 minutes.
nevsk [136]3 years ago
4 0
Well I think it's 10 hours and 20 minutes you just have to count the hours but subtract one hour because of lunch then add the remaining minutes.
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356 I want the greatest odd number by using these num​
kari74 [83]

Answer:

33

Step-by-step explanation:

We cant make greatest odd num by adding these numbers but:

33

3 0
3 years ago
Which statements are true about the graph of the function f(x) = x2 – 8x + 5? Check all that apply.
statuscvo [17]

Answer:

A, D, E are true

Step-by-step explanation:

You have to complete the square to prove A.  Do this by first setting the function equal to 0, then moving the 5 to the other side.

x^2-8x=-5

Now we can complete the square.  Take half the linear term, square it, and add it to both sides.  Our linear term is 8 (from the -8x).  Half of 8 is 4, and 4 squared is 16.  So we add 16 to both sides.

(x^2-8x+16)=-5+16

We will do the addition on the right, no big deal.  On the left, however, what we have done in the process of completing the square is to create a perfect square binomial, which gives us the h coordinate of the vertex.  We will rewrite with that perfect square on the left and the addition done on the right,

(x-4)^2=11

Now we will move the 11 back over, which gives us the k coordinate of the vertex.

(x-4)^2-11=y

From this you can see that A is correct.

Also we can see that the vertex of this parabola is (4, -11), which is why B is NOT correct.

The axis of symmetry is also found in the h value.  This is, by definition, a positive x-squared parabola (opens upwards), so its axis of symmetry will be an "x = " equation.  In the case of this type of parabola, that "x = " will always be equal to the h value.  So the axis of symmetry is

x = 4, which is why C is NOT correct, either.

We can find the y-intercept of the function by going back to the standard form of the parabola (NOT the vertex form we found by completing the square) and sub in a 0 for x.  When we do that, and then solve for y, we find that when x = 0, y = 5.  So the y-intercept is (0, 5).

From this you can see that D is also correct.

To determine if the parabola has real solutions (meaning it will go through the x-axis twice), you can plug it into the quadratic formula to find these values of x.  I just plugged the formula into my graphing calculator and graphed it to see that it did, indeed, go through the x-axis twice.  Just so you know, the values of x where the function go through are (.6833752, 0) and (7.3166248, 0).  That's why you need the quadratic formula to find these values.

7 0
3 years ago
Quotient of 32 and -8
mestny [16]

Answer:

-4

Step-by-step explanation:

mark branliest :))

3 0
3 years ago
Read 2 more answers
cho phương trình 2x^2-5x-9 có hai nghiệm là x1,x2. không giải phương trình, hãy tính giá trị của biểu thức A= x1^2+x2^2-2x1x2^2
irga5000 [103]

Step-by-step explanation:

please subscribe to my mom channel please

https://youtu.be/f_kgUUaMZlw

8 0
3 years ago
Mario has a remaining balance of $1,300 on his credit card his credit card has an APR of 20% how much will he pay in interest in
nydimaria [60]
The correct answer for this problem is 6,500 in one month
4 0
3 years ago
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