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Oksanka [162]
3 years ago
10

Factor this trinomial completely. 2x2 + 6x + 4 O

Mathematics
2 answers:
svp [43]3 years ago
4 0

Answer:

B.  2(x+2)(x+1)

Step-by-step explanation:

Rom4ik [11]3 years ago
3 0

\sf\purple{B. \:2(x + 2)(x+1) }

\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}

2 {x}^{2}  + 6x + 4

Taking 2 as common factor, we have

= 2 \: ( {x}^{2}  + 3x + 2) \\  =2 \: ( {x}^{2}   + 2x + x + 2)

Taking x as common from first two terms and 1 from last two terms, we have

= 2 \:[x(x + 2) + 1(x + 2)]

Taking the factor (x+2) as common,

= 2(x + 2)(x + 1)

\large\mathfrak{{\pmb{\underline{\orange{Happy\:learning }}{\orange{!}}}}}

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A rock sample containing an isotope with a half-life of 28 million years has an initial mass of 184 grams. how much time has ela
damaskus [11]
<h2>Half Life</h2>

The half life period is the time in which only half of the given population remains. It can be represented through this equation:

f(t)=a\times(1/2)^{\frac{t}{h}}

  • <em>t</em> = time passed
  • <em>a</em> = y-intercept
  • <em>h</em> = half life

<h2>Solving the Question</h2>

We're given:

  • <em>h</em> = 28 million years
  • <em>a</em> = 184 grams (this is the initial mass, after 0 time has passed)

For most questions like this, we would have to plug these values into the equation mentioned above. However, this question asks for the time elapsed after 3 half-lives.

This can be calculated simply by multiplying the given half-life by 3:

28 million years x 3

= 84 million years

<h2>Answer</h2>

84 million years

3 0
1 year ago
In 2009, a school population was 1,700. By 2017 the population had grown to 2,500. Assume the population is changing linearly. W
qaws [65]

Answer:

100

Step-by-step explanation:

The population is changing linearly. This means that the population is increasing by a particular value n every year.

From 2009 to 2017, there are 8 increases and so, the population increases by 8n.

The population increased from 1700 to 2500. Therefore, the population increase is:

2500 - 1700 = 800

This implies that:

8n = 800

=> n = 800/8 = 100

The average population growth per year is 100.

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What is the height of the triangle 35 and 819
kakasveta [241]
I don’t know what answers you have but I think it’s 23.4
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To get from (-4,1) to (-2,2), you need to go “up 1, right 2” which gives you a slope of m = 1/2

Next you need the b-value, which comes from the y-intercept of (0,3). The b-value is 3.

Putting the slope and b-value into y=mx+b, you have y = 1/2 x + 3.
4 0
3 years ago
Simplify: 6y + 5z + 8y – 3z
mezya [45]
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3 years ago
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