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baherus [9]
3 years ago
7

What is equivalent to 4/21

Mathematics
2 answers:
RideAnS [48]3 years ago
8 0
4 times 21 equals 84
 AND
 4 times 21 equals 84
BlackZzzverrR [31]3 years ago
5 0
It's 8/42 because 4 times 2 is 8 and 21 times 2 is 42
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Write a polynomial function f of least degree that has a leading coefficient of 1 and the given zeros -4,-2,5. write the functio
OLga [1]

Answer:

Step-by-step explanation:

This is a third degree polynomial since we have 3 zeros.  We find these zeros by factoring the given polynomial.  The zeros of a polynomial are where the graph of the function goes through the x-axis (where y = 0).  If x = -4, the factor that gives us this value is (x + 4) = 0 and solving that for x, we get x = -4.  If x = -2, the factor that gives us that value is (x + 2) = 0 and solving that for x, we get x = -2.  Same for the 5.  The way we find the polynomial that gave us these zeros is to go backwards from the factors and FOIL them out.  That means that we need to find the product of

(x + 4)(x + 2)(x - 5).  Do the first 2 terms, then multiply in the third.

(x+4)(x+2)=x^2+2x+4x+8, which simplifies to

x^2+6x+8

No we multiply in the final factor of (x - 5):

(x^2+6x+8)(x-5)=x^3+6x^2+8x-5x^2-30x-40 which simplifies to

f(x)=x^3+x^2-22x-40

If you are aware of the method for factoring higher degree polymomials, which is to use the Rational Root Theorem and synthetic division, you will see that this factors to x = -4, -2, 5.  If you know how to use your calculator, you will find the same zeros in your solving polynomials function in your apps.

3 0
3 years ago
Factor 3x^2 + 7x + 2
Dovator [93]

Answer:

(x+2)(3x+1) are the factors

3 0
2 years ago
Read 2 more answers
15. What is the solution to 3x - 52 28?
Pani-rosa [81]

Answer:

x> 30

Step-by-step explanation:

+ First, is the inequation 3x - 52 > 28.

+ If Yes, so we can solve:

3x - 52 > 28

3x - 52 + 52 > 28 +52

3x > 90

3x/3 > 90/3 (divide both sides by 3>0)

x > 30

4 0
3 years ago
How many times greater is 10 cubic yards than 5 cubic yard? Complete the equation
monitta

Answer:

2 times

Step-by-step explanation:

10 / 5 = 2

   or

5 x 2 = 10

so 10 is 2 times greater than 5

8 0
3 years ago
Plz answer below 38 pts and will mkae u brainliest.
mestny [16]

Answer:

Question 1: She needs 12 blue beads and 48 black beads.

Question 2: She needs 10 blue beads and 25 black beads.

Step-by-step explanation:

I used ratios

question one's ratio is 3:12 and the second one's ratio is 4:10. If you keep that ratio consistent than those are the numbers you get based on the number of beads long she wants her necklace.

that's my best guess

7 0
3 years ago
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