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kolbaska11 [484]
3 years ago
7

Leonora is factoring a trinomial. The factors of the trinomial are shown on the model. Which trinomial did she factor? x2 + 4x –

12 x2 + 2x – 6 x2 – 8x – 6 x2 – 4x – 12

Mathematics
2 answers:
max2010maxim [7]3 years ago
5 0

The correct answer is x2 – 4x – 12

Valentin [98]3 years ago
4 0

Answer:

x² – 4x – 12

Step-by-step explanation:

We can see in the vertical edge of the model that one factor is (x+2).  In the horizontal edge of the model, the other factor is (x-6).

Multiplying the two factors, the trinomial is

(x+2)(x-6) = x(x)-6(x)+2(x)+2(-6) = x²-6x+2x-12

Combining like terms, we have

x²-4x-12

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Study the following frequency distribution table.
m_a_m_a [10]

Answer:

Option C is correct.

f = 2

Step-by-step explanation:

The mean is the sum of variables divided by the number of variables

Mean = (Σfx)/(Σf)

xi | 15 | 17 | 20 | 30 | 10 + f

fi | 4 | 4 | 6 | 5 | 6

Σfx = (15×4) + (17×4) + (20×6) + (30×5) + [(10+f)×6] = 60 + 68 + 120 + 150 + 60 + 6f = (458 + 6f)

Σf = 4 + 4 + 6 + 5 + 6 = 25

Mean = 18.8

18.8 = (458+6f) ÷ 25

458 + 6f = 25 × 18.8 = 470

6f = 470 - 458 = 12

f = (12/6) = 2

Hope this Helps!!!

6 0
2 years ago
Lea invests a sum of money in a savings account with an interest rate of 3.4% compounded continuously. After 10 years, the balan
Allushta [10]

Answer:

$1,352

Step-by-step explanation:

The computation of the initial amount is shown below:

As we know that

Ending value = Initial investment × e^{rate, time period}

$1,900 = Initial investment × e^{3.4%, 10}

$1,900  = Initial investment × e^0.34

$1,900  = Initial investment × 1.404947591

So, the initial investment is

= $1,900 ÷  1.404947591

= $1,352

4 0
3 years ago
<img src="https://tex.z-dn.net/?f=-2%5Csqrt%7B50x%5E5%7D%20%2B5%5Csqrt%7B18x%5E5%7D" id="TexFormula1" title="-2\sqrt{50x^5} +5\s
MaRussiya [10]

Answer:

234.98

Step-by-step explanation:

in class notes

3 0
2 years ago
Why cant a linear equation have two solutions
mars1129 [50]
Systems of linear equations can only have 0, 1, or an infinite number of solutions. The two lines can't intersect twice, so the correct answer is that the system has one solution. 
4 0
3 years ago
Please help with math thank you, will give brainliest answer!!!
MariettaO [177]

A

7*(1)(14) = 98 Not the right answer. I have done what is inside the brackets first. (5 - 4) = 1; (5 + 9)= 14; 7 * 1 * 14 = 98 which is not 6

B

7 * [1 * 5] + 9 = 44; 7 * 5 + 9 = 35 + 9 = 44 Also not 6

C

7*[5 - 20 + 9] = - 42; Not 6 as well 7*[14-20] = 7*-6 = - 42

D

7*5 - [20 + 9] = 35 - 29 = 6

Answer D


6 0
2 years ago
Read 2 more answers
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