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arlik [135]
3 years ago
15

ASAP PLS!! i attached a link with a screenshot of the question. please give step by step!!!!! will mark brainliest :)

Mathematics
1 answer:
emmainna [20.7K]3 years ago
7 0

Answer:

I found two different solutions. Hope one of them help!

1. x = -1/3 = -0.333

2. x = 5/2 = 2.500

Step-by-step explanation:

13 ± √ 289

  x  =    ——————

                     12

Can  √ 289 be simplified ?

Yes!   The prime factorization of  289   is

  17•17

To be able to remove something from under the radical, there have to be  2  instances of it (because we are taking a square i.e. second root).

√ 289   =  √ 17•17   =

               ±  17 • √ 1   =

               ±  17

So now we are looking at:

          x  =  ( 13 ± 17) / 12

Two real solutions:

x =(13+√289)/12=(13+17)/12= 2.500

or

x =(13-√289)/12=(13-17)/12= -0.333

Two solutions were found :

x = -1/3 = -0.333

x = 5/2 = 2.500

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Hi help me with this too pls I can't pls​
Musya8 [376]

Answer:

1) 3(9) +15

2) 2(-5)^2 - 11

3) (-2)^3 + 13(-2)

4) 4(6)^2 -7

5) (-9)^2 - (-9) + 10

All you have to do solve

Step-by-step explanation:

Replace the x with whatever number is in the f(number)

4 0
3 years ago
A sphere has center (0,0,0) and a radius of 5. Which of the following points lie on the sphere?
Colt1911 [192]
Since the sphere is located at the center and has radius 5.
Out of the following given points,
(5,5,-5) will lie on the sphere, where x and y coordinates will be positive and z coordinate will be negative.
This is because the radius of the circle is 5 units.
7 0
3 years ago
Factor out the coefficient of the variable term.
aivan3 [116]

Given:

The expression is

\dfrac{1}{2}n-\dfrac{1}{2}

To find:

The factored form of given expression after factor out the coefficient of the variable term.

Solution:

We have,

\dfrac{1}{2}n-\dfrac{1}{2}

Here, the coefficient of variable n is \dfrac{1}{2}.

It can be written as

=\dfrac{1}{2}\times n-\dfrac{1}{2}\times 1

Taking out \dfrac{1}{2} as common factor, we get

=\dfrac{1}{2}(n-1)

Therefore, the factored from of given expression is \dfrac{1}{2}(n-1).

6 0
3 years ago
What is the value of x in x/0.2 = -11.3
Julli [10]
B
If you have the variable near a division sign you automatically have to do the inverse opperations. You would have to multiply on the problem and each answer was either +, -, /, or x. Therefore, the answer is B.
3 0
3 years ago
In 5 seconds an athlete runs 40 feet. what is the average speed in miles per hour?​
NikAS [45]

Answer:

12 x 40 = 480 feet per minute.

480 x 60 = 28800 feet per hour.  

28800/5280 = 5.45 miles per hour.

Hope that helps.Thank you!!!

6 0
3 years ago
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