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3 years ago

Which of these illustrates the associative property of multiplication?

Mathematics

2 answers:

const2013 [10]3 years ago

8 0

It’s A because you just move the parenthesis

miss Akunina [59]3 years ago

8 0

Answer: 4 x (5 x 6) = (4 x 5) x 6

Step-by-step explanation: it doesnt mater what order u multiply

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Likurg_2 [28]

56 + 16.80 = 72.80!!!!!!!!!!!!!

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3 years ago

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A rope of length 18 feet is arranged in the shape of a sector of a circle with central angle O radians, as shown in the

creativ13 [48]

Answer:

$A(\theta)=\frac{162 \theta}{(\theta+2)^2}$

Step-by-step explanation:

The picture of the question in the attached figure

step 1

Let

r ---> the radius of the sector

s ---> the arc length of sector

Find the radius r

we know that

$2r+s=18$

$s=r \theta$

$2r+r \theta=18$

solve for r

$r=\frac{18}{2+\theta}$

step 2

Find the value of s

$s=r \theta$

substitute the value of r

$s=\frac{18}{2+\theta}\theta$

step 3

we know that

The area of complete circle is equal to

$A=\pi r^{2}$

The complete circle subtends a central angle of 2π radians

using proportion find the area of the sector by a central angle of angle theta

Let

A ---> the area of sector with central angle theta

$\frac{\pi r^{2} }{2\pi}=\frac{A}{\theta} \\\\A=\frac{r^2\theta}{2}$

substitute the value of r

$A=\frac{(\frac{18}{2+\theta})^2\theta}{2}$

$A=\frac{162 \theta}{(\theta+2)^2}$

Convert to function notation

$A(\theta)=\frac{162 \theta}{(\theta+2)^2}$

6 0

4 years ago

Evaluate the expression 14C2

lisabon 2012 [21]

$\bf _nC_r= \cfrac{n!}{r!(n-r)!}\qquad \qquad _{14}C_2=\cfrac{14!}{2!(14-2)!}$

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3 years ago

11. If g(x)=3xsquare - x+17, then g(2)=

Shtirlitz [24]

Answer:

number 12 is the 5th one E

Step-by-step explanation:

...

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3 years ago

Giving Brainlies!! 14. How many tests did the student take during their junior year in high school? (1 point)

inessss [21]

Hi there.

The answer is definitely "D" because on the graph it shows there are only 29 students that did the test.

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4 years ago

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