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3 years ago

I need this done by tomorrow 2.

Mathematics

2 answers:

Savatey [412]3 years ago

8 0

Here's the solution,

=》

$12{x}^{2} + 14x - 6$

=》

$12 {x}^{2} + 18x - 4x - 6$

=》

$6x(2x + 3) - 2(2x + 3)$

=》

$(6x - 2)(2x + 3)$

=》

$2(3x - 1)(2x + 3)$

hence, the second option is correct

Softa [21]3 years ago

5 0

Answer:

The answer is 2 (3x - 1) × (2x + 3)

Hope it helps!!

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you deposit $50 in your savings account. One week later, you withdraw $20. Write each amount as an integer

algol13

When you deposit $50 into your account, you add it to the amount already in your account. (Some people oversee this error and assume the account has a balance of 0.)

So you add 50 to x, our variable, and then subtract 20 from it because we withdrew $20.

So the amount remaining is x+30.

However, the question asks for every amount to be written as an integer. Let's say that 50 is a, 20 is b, and the original amount is x.
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3 years ago

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siniylev [52]

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3 years ago

Sam currently 100 followers on TikTok, and gains 8 subscribers a week. Alex currently has 220 followers, and gains 3 followers e

Mrrafil [7]

Part A: The system of equations to shows each person's subscribers is:

S = 100 + 8x

A = 220 + 3x

Part B: Sam and Alex will have the same number of subscribers after 24 weeks

Part C: Sam and Alex will have 292 subscribers when their subscriber count is equal

Let the number of weeks be x

The initial number of followers that Sam has = 100

Sam gains 8 subscribers every week

Let the total number of subscribers that Sam has be S

The equation that represents Sam's total subscribers is:

S = 100 + 8x..................(1)

The initial number of followers that Alex has = 220

Alex gains 8 subscribers every week

Let the total number of Alex's subscribers be A

A = 220 + 3x....................(2)

If Sam and Alex have the same number of subscribers:

S = A

100 + 8x = 220 + 3x

8x - 3x = 220 - 100

5x = 120

x = 120/5

x = 24

Sam and Alex will have the same number of subscribers after 24 weeks

To find the number of subscribers that Sam and Alex will have when their subscriber count is equal, substitute x = 24 into equation (1)

S = 100 + 8x

S = 100 + 8(24)

S = 292

Sam and Alex will have 292 subscribers when their subscriber count is equal

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3 years ago

Which trend BEST describes the relationship in the graph?

vovangra [49]

Answer:

Step-by-step explanation:

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3 years ago

IQ scores for adults age 20 to 34 years are normally distributed according to N(120, 20). In what range does the middle 68% of p

Ilya [14]

The required interval of the given normal distribution using the empirical rule is <u>[100, 140]</u>.

The empirical rule formula (also known as a 68 95 99 rule formula) uses data from a normal distribution to determine the first, second, and third standard deviations, which, respectively, differ from the mean value by 68%, 95%, and 99%. Additionally, it shows that 99.9% of the data fall inside the third standard deviation range (either above or below the mean value). The empirical rule formula is described below with cases that have been resolved.

In the question, we are given that IQ scores for adults aged 20 to 34 years are normally distributed according to N(120, 20), and are asked for the range in which the middle 68% of people in this group score on the test.

N(120, 20) signifies a normal distribution with mean, μ = 120, and the standard deviation, σ = 20.

By the empirical formula, 68% of the data lies within one standard deviation from the mean.

Thus, the required interval is [μ - σ, μ + σ] = [120 - 20, 120 + 20] = [100, 140].

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1 year ago