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3 years ago

What is the x-coordinate of the vertex of the parabola whose equation is y = 3x^2 + 12x + 5?

Mathematics

2 answers:

aleksley [76]3 years ago

6 0

(-2, -7) The answer would be -2. I hope that this helped! ;)

ahrayia [7]3 years ago

4 0

Well it will be a simple as grid algebra
3(2+12)+12x5

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I need help plish k squared minus 11

timama [110]

Answer: It's an algebraic expression

Step-by-step explanation: k²- 11 is an algebraic expression.

If you found my answer helpful please choose my answer as Brainliest. I would appreciate it! Good luck everyone! :)

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2 years ago

A seamstress needs to cut 15-inch pieces of ribbon from a roll of ribbon that is 9 feet in length. What is the greatest number o

Eduardwww [97]

Before attempting to solve any problem, make sure that the units are consistent. There are units of feet and inches. To be consistent,let's convert ft to in knowing that there are 12 inches in 1 ft.

9 ft*12 in/1 ft = 108 inches

Now, it also mentions that there are 5 of these. So, the total length would be:
Total Length = 108*5 = 540 inches

Finally, divide the total length to 15 inches.

Number of portions = 540/15 = <em>36 pieces of 15-inch ribbons</em>

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4 years ago

Lines a,b,c, and d are in the same plane. Line a is parallel to line c. Lines b and c are perpendicular to line d. Based on this

Kaylis [27]

Line A and B is perpendicular

4 0

3 years ago

Read 2 more answers

Lotteries are an important income source for various governments around the world. However, the availability of lotteries and ot

SashulF [63]

Answer: 0.0473

Step-by-step explanation:

Given : The proportion of gambling addicts : p=0.30

Let x be the binomial variable that represents the number of persons are gambling addicts.

with parameter p=0.30 , n= 10

Using Binomial formula ,

$P(x)=^nC_xp^x(1-p)^{n-x}$

The required probability = $P(x>5)=P(6)+P(7)+P(8)+P(9)+P(10)\\\\=^{10}C_6(0.3)^6(0.7)^{4}+^{10}C_7(0.3)^7(0.7)^{3}+^{10}C_8(0.3)^8(0.7)^{2}+^{10}C_9(0.3)^9(0.7)^{1}+^{10}C_{10}(0.3)^{10}(0.7)^{0}\\\\=\dfrac{10!}{4!6!}(0.3)^6(0.7)^{4}+\dfrac{10!}{3!7!}(0.3)^7(0.7)^{3}+\dfrac{10!}{2!8!}(0.3)^8(0.7)^{2}+\dfrac{10!}{9!1!}(0.3)^9(0.7)^{1}+(1)(0.3)^{10}\\\\=0.0473489874\approx0.0473$

Hence, the required probability = 0.0473

5 0

3 years ago

Find x when f(x)=1 . (These means find the input that gives an output of 1.)<br><br> f(x)=1/x-2

Andreyy89

Answer:

x = 1/3

Step-by-step explanation:

1 = 1/x -2

add 2 to both sides

3 = 1/x

x = 1/3

5 0

3 years ago