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Softa [21]
3 years ago
7

What are the solutions for x when y is equal to 0 in the quadratic function y=x^2-8x

Mathematics
1 answer:
Elena L [17]3 years ago
5 0
I would use the quadratic formula for this:

  x = -b ± √b² - 4ac over 2a
  x = 8 ± √64 - 4(1)(0) over 2(1)
  x = 8 ± √64 over 2
  x = 8 <span>± 8 over 2 [simplify]
  x = 4 </span><span>± 4
     x1 = 4 + 4    x2 = 4 - 4
     x1 = 8          x2 = 0


Thus, the solutions for x would be 0 and 8.</span>
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When you convert, just remember that degrees ==> less radians,
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3 years ago
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If a meatball recipe calls for 10 pounds of ground beef is 5 kilograms of ground beef enough to make the meatballs
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Answer:  Yes. 5 kilograms is  a little more than enough.

Step-by-step explanation:

Use the conversion factor.  1 kilogram = 2.20462 pounds

We can round that to 2.2 for a question like this.

5 × 2.2 = 11 pounds

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2 years ago
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2 years ago
WILL GIVE BRAINIEST: A beetle weighs 8.7 x 10^-3 gram. What is 8.7 x 10^-3 written in standard form?
Montano1993 [528]

Answer:

.0087

Step-by-step explanation:

8.7 x 10^-3

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3 years ago
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Which inequality is true if p=3.4
Serga [27]

Answer:

None of the inequalities are correct if p = 3.4

Step-by-step explanation:

Mathematical inequality is an order relation proposition existing between two algebraic expressions connected through the signs: unequal than ≠, greater than>, less than <, less than or equal to ≤, as well as greater than or equal to ≥, resulting in both expressions of different values. That is, an inequality is a relationship that exists between two quantities or expressions and, which indicates that they have different values.

To check an inequality, you must replace the inequality variable with the value of the solution.  In this case, being p=3.4, you must do it with each of the inequalities, as shown below:

A. 3p<10.2 ⇒ 3*3.4<10.2 ⇒ 10.2 <10.2  

This inequality is not true, because 10.2 is not less than 10.2, but they are equal.

B. 13.6<3.9p ⇒ 13.6<3.9*3.4 ⇒ 13.6<13.26  

This inequality is not true, because 13.6 is greater than 13.26 and not less as the inequality shows.

C. 5p>17.1 ⇒ 5*3.4 >17.1 ⇒ 17 > 17.1  

This inequality is not true, because 17 is less than 17.1 and not greater as the inequality shows.

D. 8.5> 2.5p ⇒ 8.5 >2.5*3.4 ⇒ 8.5 > 8.5

This inequality is not true, because 8.5 is not less than 8.5. These values ​​are the same.

<em><u>None of the inequalities are correct if p = 3.4</u></em>

7 0
3 years ago
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