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2 years ago

6

Use elimination to solve 3y-6x=7-4y-3x=9

1 answer:

Masja [62]2 years ago

5 0

Reorder both sides

3y-6x=9
7-4y-3x=9

Multiply both sides
-6x-3y=9
6x+8y=-4

Dived both sides

11y= 5

Y=5/11

Substitute the value of Y

-3x-4(5/11)

Equals —> -14/11

Answer : (5/11 , -14/11)

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Compare 4.6, 2.8..., square root 17, 3.9..., square root 8

Basile [38]

1. Square root 17= 289, Square root 8= 64.
$289 = 289.00 \: \: 64 = 64.00$
$4.6 > 2.8$
$289.00 > 64.00$
$289.00 > 4.6$
$4.6 > 3.9$
$2.8 < 3.9$
Least to greatest:
2.8, 3.9, 4.6, 64.00, 289.00

7 0

2 years ago

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

so

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

3 years ago

The sum of x and 2 and itr is and algebraic expression

Masja [62]

Sum is add
sum of x and 2 means x+2
nothing to it

3 0

2 years ago

Please help. I will give brainliest immediately.

DerKrebs [107]

Answer:

I'm pretty sure it is d, 5/22

7 0

2 years ago

SOME ONE HELP!!!!! this test is due soon

valentina_108 [34]

Answer:

4.66 (4 2/3, 14/3)

Step-by-step explanation:

3 0

2 years ago

Read 2 more answers