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3 years ago

What's the answer to 1/2(x+4)^2-5+=3.

Mathematics

1 answer:

nadya68 [22]3 years ago

6 0

Answer:

x = 0

Step-by-step explanation:

To solve this equation you would need to get x by itself on one side

1/2 (x+4)^2 - 5 = 3

1.) add 5 to both sides

1/2 (x+4)^2 = 8

2.) divide each side by 1/2

(x+4)^2 = 16

3.) find the square root of both sides

(x+4) = 4

4.) subtract 4 from both sides

x = 0

The app "Photomath" is a great way to solve problems like these and it gives a step by step explanation that might be easier to understand than mine :)

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2m+n=7 4m+3n=-10 Solve using substitution method

jeka57 [31]

Answer:

m=31/2, n=-24. (31/2, -24).

Step-by-step explanation:

2m+n=7

4m+3n=-10

-------------------

n=7-2m

4m+3(7-2m)=-10

4m+21-6m=-10

-2m=-10-21

-2m=-31

2m=31

m=31/2

2(31/2)+n=7

31+n=7

n=7-31

n=-24

5 0

3 years ago

PLEASE HELP WITH THIS ONE QUESTION

AnnyKZ [126]

Answer:

The solution is in the attached file

6 0

3 years ago

BRAINLIEST ASAP! PLEASE HELP ME. :)

yuradex [85]

<h3>Answer: Perpendicular</h3>

=========================================================

Work Shown:

Solve the first equation for y

3x+7y = 15

7y = -3x+15

y = (-3x+15)/7

y = (-3/7)x + 15/7

The slope here is -3/7

-------

Solve the second equation for y

7x-3y = 6

-3y = -7x+6

y = (-7x+6)/(-3)

y = (7/3)x - 2

The slope here is 7/3

-------

The slopes -3/7 and 7/3 are not equal, so we don't have parallel lines.

The lines however are perpendicular because the slopes multiply to -1

(-3/7)(7/3) = (-3*7)/(7*3) = -21/21 = -1

6 0

3 years ago

Which of the following statements are true of the parabola shown?

Vesna [10]

True statements are:

It has a directrix of x = - 4.
It has a focus at (4, 0).

Step-by-step explanation:

We have the following statements to check on whether it's right or wrong:

1. It has a directrix of x = -4:

According to figure , parabola directrix is at -4 i.e. at x = -4 , Therefore this statement is true!

2. It opens to the left:

In figure, Parabola opens to right not left , Therefore this statement is wrong!

3. It has a vertex at the origin:

Vertex of Parabola is at what points not shown in figure. Therefore this statement cannot be confirmed as true.

4. The axis of symmetry is the y-axis:

Axis of symmetry for above parabola is x-axis as it cuts parabola into two equal halves , y-axis doesn't do this ! Therefore this statement is wrong!

5. It has a focus at (4, 0):

Parabola focus is at $F(4,0)$ on x-axis . And so, Therefore this statement is true!

3 0

3 years ago

Read 2 more answers

The sixth grade band students are selling magazines to raise money for new instruments. As a reward for selling, the students ea

dexar [7]

Answer:

okay he's saying that each student gets 25 points to start with and then they get five more like 25 / 25 * 5 or like 25 + 5 or 25 - 5 like represent those numbers and like get the number or something like that

6 0

2 years ago