All categories

3 years ago

Find the value of c . 5/2 = c/22 c = ___.

Mathematics

1 answer:

sleet_krkn [62]3 years ago

8 0

Answer:

c = 55

Step-by-step explanation:

You might be interested in

Suppose the half-life of a certain radioactive substance is 12 days. Find the time when there will be 20% of the initial substan

vazorg [7]

Answer: 2.4% I think

12 x 20 / 100 = 2.4%

7 0

3 years ago

Factor the following problems -13=-4a-2b+c 3=4a+2b+c 5=16a+4b+c Please Help!

Pie

1) -13 = -4a - 2b + c
-13 = -2(2a + b) + c

2) 3 = 4a + 2b +c
3 = 2(2a + b) + c

3) 5 = 16a + 4b + c
5 = 4(4a + b) + c

[ Final Answers are in bold ]

Hope this helps!

8 0

3 years ago

Solve the equation by completing the square round to the nearest hundredth is necessary x^2-x-7=0

masha68 [24]

The answers are 3.19 or -2.19.

In order to complete the square, you must first get the constant to the other side of the equation. WE do that by adding 7 to both sides.

x^2 - x - 7 = 0

x^2 - x = 7

Now we must take half of the x coefficient (-1), which would be -.5. Then we square it and add it to both sides. This is the second step to any completing the square problem.

x^2 - x = 7

x^2 - x + .25 = 7.25

Now that we have done that, the left side will be a perfect square so that, we can factor it.

x^2 - x + .25 = 7.25

(x - .5)^2 = 7.25

After having done that, we can take the square root of both sides

(x - .5)^2 = 7.25

x - .5 = +/- $\sqrt{7.25}$

Now we can take the value of that square root and solve.

x - .5 = +/- $\sqrt{7.25}$

x - .5 = +/-2.69

x = .5 +/- 2.69

And with the + and - both there, we need to do both to get the two answers.

.5 + 2.69 = 3.19

.5 - 2.69 = -2.19

4 0

3 years ago

Factoring / gcf ??? (in picture)

Licemer1 [7]

Step-by-step explanation:

hope this will help you....

6 0

2 years ago

Solve x-3y+2z=1 -x+4y-4z=1 5x-y+6z=9

Lubov Fominskaja [6]

Answer:

x=3, y=0, z=-1

Step-by-step explanation:

hope this helped :)

3 0

3 years ago