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3 years ago

How do you work this equation out? 189 / 6 = (180 + _) / 6 = ( _ / _ ) + ( _ / _ ) = _ + _ = _

Mathematics

1 answer:

larisa86 [58]3 years ago

8 0

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Round 3.55 to 1 significant figure

Gelneren [198K]

The correct answer is 4!! hope this is right

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3 years ago

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1. The graph below shows Calvin’s distance from home throughout the day

natta225 [31]

Answer:

Step-by-step explanation:

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3 years ago

Help, right answer please :)

Gekata [30.6K]

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3 years ago

Combinatorics: what is the coefficient of (a^2)(b^3)(c) in (2a - b + 3c)^6?

Karolina [17]

Answer:

The coefficient of a²b³c is -720

Step-by-step explanation:

Given: $(2a-b+3c)^6$

Let 2a-b = x and 3c = y

$(x+y)^6$

General term of binomial expansion.

$T_{r+1}=^nC_rx^{n-r}y^r$

where, n=6 , r=1 ( because exponent of c is 1)

$\Rightarrow ^6C_1x^{6-1}y^1$

$\Rightarrow 6(2a-b)^{5}3c$ $\because y=3c, x=2a-b$

$\Rightarrow 18(2a-b)^{5}c$ ----------(1)

Now, we simplify (2a-b)⁵

$T_{r+1}=^5C_r(2a)^{5-r}(-b)^r$

The exponent of b is 3 and a is 2 .

If we take r=3 will get exponent of b is 3 and a is 2

So, put r=3

$T_{4}=^5C_3(2a)^{2}(-b)^3=-40a^2b^3$

Substitute into equation (1)

$\Rightarrow 18\cdot -40a^2b^3c$

$\Rightarrow -720a^2b^3c$

Hence, The coefficient of a²b³c is -720

5 0

4 years ago

A guidance counselor wants to determine if there is a relationship between a student’s number of absences, x, and their grade po

aalyn [17]

The interpretation of the value of s being 0.67 is that: the typical distance between the observed grade points and predicted grade points was about 0.67 points.

The given parameters are:

n = 15
s = 0.67

<h3>Variable s</h3>

In regression, the variable s represents the average distance that the observed values fall from the regression line

<h3>The grade points</h3>

In this case, we have:

The observed grade points and
The predicted grade points

Hence, 0.67 represents the typical distance between the observed grade points and predicted grade points.