3 years ago

If 8(2r-3)-r=3(3r+2) what does r equal

Mathematics

2 answers:

Xelga [282]3 years ago

7 0

You have to get r by itself once you simplify on both sides

ella [17]3 years ago

4 0

8(2r-3)-r=3(3r+2) 16r-24-r=9r+6 16r-r-9r=6+24 6r=30 R=30÷6 R=5

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On the coordinate plane shown, each grid unit represents 10 feet. Polygon QRST has vertices Q(20, 30), R(−10, 30), S(−10, −20),

beks73 [17]

The coordinate plane is missing, so i have attached it.

Answer:

Perimeter of room = 140 ft

Area of room = 1200 sq.ft

Step-by-step explanation:

From the cordinate plane attached, we can see the polygon QRST which represents the floor plan of the roo.

Thus;

The length of the sides of the room are;

ST = RQ = 30

QT = RS = 40

Perimeter of a rectangle is the sum of all sides of the rectangle.

Thus, perimeter of the room = (30 × 2) + (40 × 2) = 140 ft

Now, area of a rectangle is the product of two perpendicular sides.

Thus area of room = 40 x 30 = 1200 sq.ft

4 0

3 years ago

Please answer, will mark brinliest

Anastaziya [24]

Step-by-step explanation:

Total sections= 8

Yellow sections=2

So,

2/8

In second black write

1/4 ( by reducing 2/8)

hope it helps

5 0

3 years ago

If y(x) = 4x, what is x when y(x) = 4 A. 1 B. 4 C. 2 D. 0

Eva8 [605]

Answer:

Step-by-step explanation:

cause if :

y=4

4(x)=4

4(1)=4

4=4

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4 0

3 years ago

12.09 rounded to the first decimal place

bulgar [2K]

12.0 is the answer I think

4 0

3 years ago

27^x = 9^x − 4 Question 1 options: x = 8 x = 4 x = −4 x = −8

Mariulka [41]

Answer:

x = -8

Step-by-step explanation:

Given the equation:

$27^x=9^{x-4}$

Note that

$27=3^3\\ \\9=3^2,$

then

$27^x=(3^3)^x=3^{3x}\\ \\9^{x-4}=(3^2)^{x-4}=3^{2(x-4)}$

Rewrite the equation as

$3^{3x}=3^{2(x-4)},$

then

$3x=2(x-4)\\ \\3x=2x-8\\ \\3x-2x=-8\\ \\x=-8$

4 0

3 years ago