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DedPeter [7]
3 years ago
15

HELP ME PLEASEEEE!!!!

Mathematics
1 answer:
wariber [46]3 years ago
6 0

Answer:

5

Step-by-step explanation:

count the brackets on the line d and e

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A rectangular prism has a width of 3 inches, and height of 4 inches, and a width of 5 inches. If the height is doubled, what hap
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Answer: If the height is doubled the volume becomes a bigger number so 3 times 2 is 6 and 4 times 2 is 8 then 5 times 2 is 10.  6+8+10=24

Step-by-step explanation:

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PLEASE PLEASE PLEASE HELP ME!?!?!? IM BAD T MATH PLEASE HELP ME!!!!!
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A bag of rice weighs 2.5 pounds. How many ounces is that?
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Factor the polynomial, x2 + 5x + 6
patriot [66]

Answer:

Choice b.

x^{2} + 5\, x + 6 = (x + 3)\, (x + 2).

Step-by-step explanation:

The highest power of the variable x in this polynomial is 2. In other words, this polynomial is quadratic.

It is thus possible to apply the quadratic formula to find the "roots" of this polynomial. (A root of a polynomial is a value of the variable that would set the polynomial to 0.)

After finding these roots, it would be possible to factorize this polynomial using the Factor Theorem.

Apply the quadratic formula to find the two roots that would set this quadratic polynomial to 0. The discriminant of this polynomial is (5^{2} - 4 \times 1 \times 6) = 1.

\begin{aligned}x_{1} &= \frac{-5 + \sqrt{1}}{2\times 1} \\ &= \frac{-5 + 1}{2} \\ &= -2\end{aligned}.

Similarly:

\begin{aligned}x_{2} &= \frac{-5 - \sqrt{1}}{2\times 1} \\ &= \frac{-5 - 1}{2} \\ &= -3\end{aligned}.

By the Factor Theorem, if x = x_{0} is a root of a polynomial, then (x - x_0) would be a factor of that polynomial. Note the minus sign between x and x_{0}.

  • The root x = -2 corresponds to the factor (x - (-2)), which simplifies to (x + 2).
  • The root x = -3 corresponds to the factor (x - (-3)), which simplifies to (x + 3).

Verify that (x + 2)\, (x + 3) indeed expands to the original polynomial:

\begin{aligned}& (x + 2)\, (x + 3) \\ =\; & x^{2} + 2\, x + 3\, x + 6 \\ =\; & x^{2} + 5\, x + 6\end{aligned}.

4 0
3 years ago
A technology company determined that an average of 3 phones were defective for every 200 phones it produced. At this rate, about
Anit [1.1K]
You have to calculate the probability for the given average:
 = 3/200 = 0.015 = 1.5%
For 50,000 phones you have to multiply the probability by 50,000:
0.015*50,000 = 750 phone defectives if the company produced 50,000

5 0
3 years ago
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