-2x + 5 = -1
subtract 5 from both sides: -2x = -6
divide each side by -2: x = 3
plug in 3: 5(3)
multiply: 15
the value of 5x is 15.
Answer:
A. 8x10^7 is 4000 times larger tham 2x10^4
Step-by-step explanation:
The expression x^2 -7x + 10 can be written in factored form as given by Option C: (x-2)(x-5)
<h3>How to find the factors of a quadratic expression?</h3>
If the given quadratic expression is of the form 
then its factored form is obtained by two numbers alpha( α ) and beta( β) such that:

Then writing b in terms of alpha and beta would help us getting common factors out.
Sometimes, it is not possible to find factors easily, so using the quadratic equation formula can help out without any trial and error.
For this case, we're provided the expression:

We can write 10 as multiple of -5 and -2 and
we can write -7 as sum of -5 and -2. Thus, we get:

Thus, the expression x^2 -7x + 10 can be written in factored form as given by Option C: (x-2)(x-5)
Learn more about factorization of quadratic expression here:
brainly.com/question/26675692
Answer: 172.8°
Step-by-step explanation:
For a regular polynomial of N sides, the sum of all interior angles must be equal to:
Sum = (N - 2)*180°.
In this case we have N = 50
Then:
Sum = (50 - 2)*180° = 48*180°
Now, if all the 50 interior angles have the same measure, then the measure of each one will be equal to the quotient between the sum and the number of sides, this is:
Sum/50 = (48/50)*180° = 172.8°
Then the interior angles of a regular polygon of 50 sides is 172.8°