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Otrada [13]
3 years ago
6

Use factoring to find the zeros. x2 - 9x – 36 = 0

Mathematics
1 answer:
3241004551 [841]3 years ago
4 0

Answer: x=12, x=-3

Step-by-step explanation: For this factored problem, you see that -36 is negative, as well at -9. This shows you that you need to find two numbers that multiply to get -36, and add up to get -9. Two numbers that both satisfy these requirements are -12 and 3. They multiply to get -36, and add to get -9.

Once you have found your values, you plug them into (x+/- __)(x+/- __), which is (x-12)(x+3).

But since the problem asks you to find the zeroes, you set each factor equal to zero, like this:

x-12=0 and x+3=0

Then solve and you have you answer!

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If a person walks 1/7 mile in 10 min how far will that person walk in one hour
ra1l [238]

Answer:

6/7 mile

Step-by-step explanation:

1/7 = 10

?= 10x6

1/7 x 6= 6/7

5 0
3 years ago
A polynomial that has 5 turning points is multiplied by another polynomial that has 6 zeros. What is the minimum degree of the n
Rom4ik [11]
The only thing in the question I am not totally certain about is the definition of a 'zero' on a polynomial - I will assume this means an x-intercept, which seems to make sense since these are the points where the value of the function is zero.

Taking the first polynomial: the maximum number of turning points for a polynomial of order n is (n-1). Take the example of a quadratic, which always has 1 turning point. Therefore the minimum order of the first polynomial is 6.

The maximum number of x-intercepts for a polynomial of order n is n. Therefore the second polynomial has a minimum order of 6.

Multiplication of two polynomials can get very messy very quickly. However, picture putting the two in brackets next to each other, such that the terms are in decreasing orders. You can easily see the maximum order term is found by multiplying the first term in each bracket. A polynomial's order is judged solely on the maximum power of the variable, so this is all we need to consider.

This multiplication becomes ax^6 * bx^6 where a and b are arbitrary constants in this context. Hence this product is abx^12 (exponents add when the terms are multiplied, where 12 = 6 + 6), so minimum degree of new polynomial = 12
8 0
3 years ago
6(840.25)+15(1,374.05)+9(1.222.43)/30
kifflom [539]

Answer:

26018.979

yea...

4 0
3 years ago
Simplify 4.836 divided by 1.2​
MrRissso [65]

Answer:

4.03 is your answer.

Step-by-step explanation:

4.836 divided by 1.2​

4.836/1.2 = 4.03

4.03 is your answer.

8 0
3 years ago
Read 2 more answers
How to solve for x<br>7/4x - 3 = 2 + 9/2x​
Ber [7]

Answer:

x = -20/11

Step-by-step explanation:

and how -(11 x)/4 - 5 = 0

1/4 (7 x - 12) = 1/2 (9 x + 4)

hope this helps

5 0
3 years ago
Read 2 more answers
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