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Viktor [21]
3 years ago
10

Find the zeros of f(x) = 4x 2 + 5x - 21.

Mathematics
1 answer:
Goryan [66]3 years ago
6 0
To find the roots, you must set the function equal to zero and then solve for x. 
For f(x)=4x^2 + 5x -21  
The zeros of the function are: x=-3, x=7/4
Hope this helps!
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Based on a survey of U.S. residents completed in 2014, ___________ percent of respondents agreed that global warming is occurrin
Daniel [21]

Using the percentage concept, supposing 520 out of 1000 respondents believe in global warming, 52% of respondents agreed that global warming is occurring.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

P = \frac{a}{b} \times 100\%

In this problem, we suppose that 520 out of 1000 respondents believe in global warming, hence a = 520, b = 1000, and the percentage is of:

P = \frac{520}{1000} \times 100\% = 52\%

More can be learned about the percentage concept at brainly.com/question/10491646

3 0
1 year ago
Is step 3 correct or would I change 5/2 into a decimal?
Rzqust [24]

Answer:

keep it man u will do ok just be careful with other problems

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What is the value of x
ratelena [41]

Answer:

19

Step-by-step explanation:

6 0
3 years ago
How do I calculate the surface area of a coca cola bottle?
igor_vitrenko [27]
A Coca-Cola bottle is roughly a cylinder, so you would do the formula below.

5 0
2 years ago
Find the slope of the line passing through the points of (3,-5) and (-9,-6)
slavikrds [6]

Answer:

1

m = ---

12

Step-by-step explanation:

The formula is y2-y1

---------

x2-x1

(x1,y1) (x2,y2)

(3,-5) (-9,-6)

You get the 2 Y's and subtract them

Do the same with the X's

Y's above , X's below

(y2- y1)

⬇

-6-(-5) -1 1

--------- = ---- = ---- = m

-9-(3) -12 12

⬆

(×2- x1)

This equation is backwards, thats why it was harder to understand. (-9,-6) is farther left and below point (3,-5), making it the REAL first point in the equation.

5 0
3 years ago
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