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3 years ago

Determine the truth value of each statement based on the expression.

Mathematics

1 answer:

meriva3 years ago

3 0

1. true
2. false
3. true
4. false
5. true

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The binomial (2x3 + 3y2)7 is shown in expanded form, but elements of several terms are missing. To complete the expansion, drag

svlad2 [7]

${(2x^{3} + 3x^{2} )}^{7}$
EXPANDED: VERY LONG

$128x^{21} +1344x^{18} y^{2} +6048x^{15} y^{4} +15120x^{12} y^{6} +22680x^{9} y^{8} +20412x^{6} y^{10} +10206x^{3} y^{12} +2187y^{14}$

I used the Binomial Theorem, Which States
$(a + b)(a + b)= {a}^{2} + 2ab + {b}^{2} \\$
$({a}^{2} + 2ab + {b}^{2} )(a + b)={a}^{3} + 3 {a}^{2} b + 3a {b}^{2} + {b}^{3}$
$({a}^{3} + 3 {a}^{2} b + 3a {b}^{2} + {b}^{3}) \times (a + b) = i \: believe \: you \: get \: the \: pattern \: now$

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3 years ago

11=3−4/3x solve for x

Taya2010 [7]

11 = 3 - 4/3x

11 = (9 - 4x)/3

33 = 9 - 4x

24 = -4x

24/4 = - x

x = -6

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4 years ago

I kinda need help on pentagram May someone please help me I don’t understand this.

Ad libitum [116K]

You just have to figure it where you can place 2 solid lines and get 10 triangles ( i can only get 9). Think about the pentagon in the middle of the triangles and see if somehow you can create more triangles using only the two straight lines.

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3 years ago

PLS HELP ME WITH MY MATH =3=<br>The sum of 10 and x is -12

Nezavi [6.7K]

Answer:

X= 2

Step-by-step explanation:

10 + x = -12

X = 12 - 10

X = 2

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3 years ago

Read 2 more answers

Given a set of data that is skewed-left, there is at least _____ % of the data within 2 standard deviations.

Rasek [7]

Answer:

Step-by-step explanation:

For non-normal distributions, we use Chebyshev's Theorem.

Chebyshev Theorem

The Chebyshev Theorem states that:

At least 75% of the measures are within 2 standard deviations of the mean.

At least 89% of the measures are within 3 standard deviations of the mean.

An in general terms, the percentage of measures within k standard deviations of the mean is given by $100(1 - \frac{1}{k^{2}})$ .

In this question:

Within 2 standard deviations of the mean, so 75%.

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3 years ago