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devlian [24]
4 years ago
15

What are the real zeros for the function f(x)=x^2-3x-28

Mathematics
2 answers:
Alchen [17]4 years ago
5 0
x^2-3x-28=0\\
x^2-7x+4x-28=0\\
x(x-7)+4(x-7)=0\\
(x+4)(x-7)=0\\
x=-4 \vee x=7
nasty-shy [4]4 years ago
4 0
Factor the equation: (x-7)(x+4) Solve for X: X-7=0 x+4=0 X=7 x=-4 A zero is when the function crosses the x-axis which is solved by setting the function equal to zero.
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The student, who suggests that if we do half and half of each bag, we will be giving them at least 60%,<u> is correct</u>.

<h3>What is the implication of the phrase "at least"?</h3>

The phrase "at least" means the minimum that is true or possible.

Mathematically, by "at least," we mean 'equal to or greater than.'

<h3>Data and Calculations:</h3>

Since each bag of nuts contain 16 ounces,

The 1st bag contains x/2 ounces (50%) of plain nuts and x/2 ounces (50%) of chocolate-covered nuts.

The 2nd bag contains x/5 ounces (20%)of plain nuts and 4x/5 ounces (80%) of chocolate-covered nuts.

If half of the 1st bag is mixed with half of the 2nd bag, each bag will contain only 65% (that is, 25% (50%/2) from the 1st bag and 40% (80%/2) from the 2nd bag).

Thus, the student, who suggests that if we do half and half of each bag, we will be giving them at least 60%, <u>is correct</u> since they will not be given less than 60% of chocolate-covered nuts inside.

Learn more about proportions at brainly.com/question/870035

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7 0
2 years ago
Whoever gets it right can have brainliest, but answer ASAP!
polet [3.4K]

Answer:

3.

Explanation:

Hope this helps :>

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Vladimir [108]

Answer:

-29

Step-by-step explanation:

4× (x+6) = -5. + 3x

4 times the sum of a number is 5 less than 3 times the same number

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Answer:

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Step-by-step explanation:

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FrozenT [24]

Answer:

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4 years ago
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