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Elena L [17]
3 years ago
8

Evaluate x – 2y if x = –3 and y = –6.

Mathematics
2 answers:
sveticcg [70]3 years ago
7 0
X - 2y
-3 - 2(-6)
-3 + 12
9
Doss [256]3 years ago
4 0
X - 2y 

x = -3 and y = -6

-3 - 2(-6)
-3 + 12
9

Answer: 9
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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
–3 ÷ 1 = –3 What property is shown in the equation?
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Karo-lina-s [1.5K]

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Now, we just replace the values of a, b and c on the equation above.

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=

\frac{5}{2}\text{ }\pm\text{ }\frac{\sqrt[]{13}}{2}

4 0
1 year ago
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Galina-37 [17]

Answer:

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Step-by-step explanation:

Note there is a common difference d between consecutive terms in the sequence, that is

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