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dsp73
3 years ago
5

5x+3x=420 12x+9=1080 What does x and y equal?

Mathematics
2 answers:
Korvikt [17]3 years ago
7 0

Answer:

8x-55818-t

Step-by-step explanation:

Over [174]3 years ago
6 0

PLEASE MARK BRAINLIEST!

Answer for 5x+3x=420

Step 1: Simplify both sides of the equation.

5x+3x=420

(5x+3x)=420(Combine Like Terms)

8x=420

8x=420

Step 2: Divide both sides by 8.

\frac{8x}{8} = \frac{420}{8}

x = \frac{105}{2}

Answer for 12x+9=1080

Step 1: Subtract 9 from both sides.

12x+9−9=1080−9

12x=1071

Step 2: Divide both sides by 12.

\frac{12x}{12} = \frac{1071}{12}

x = \frac{357}{4}

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83x + 4

Step-by-step explanation:

9x^2 + 4 -x^2 + 3x

80x + 4 + 3x

83x + 4

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4 years ago
Please answer the question in the photo
AleksandrR [38]

Answer:

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Step-by-step explanation:

4 0
3 years ago
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PLEASEE HELPPPP!!!!! ASAP SEE ATTACHED!
stiks02 [169]
Short answer: C
Let's start with the pen. 
The length is x
The width is 3 more.= x + 3 
Perimeter of the pen = 2L + 2W
P = 2 L + 2W
P = 2*x + 2(x + 3)
P = 2x + 2x + 6
P = 4x + 6. Leave that for now.

Area of the pen without the doghouse = x(x + 3)
Area of the pen without the doghouse = x^2 + 3x
Area with the doghouse x^2 + 3x - y = 178 (that's his running around space.

Go to the dog house for a Moment
The perimeter of the doghouse and the area are equal and we are told to make them both y.
Area = y
Perimeter = y

Combined facts.
The perimeter of the Pen is three times larger than that of the dog house.
4x + 6 = 3y

The area of the Pen - The area of the doghouse = 178
x^2 + 3x - y = 178

Now what happens is that you have to juggle these two equations so they look like your answer
x^2 + 3x - y = 178
4x + 6 = 3y  Subtract 3y from both sides.
4x - 3y + 6 = 0 Subtract 6 from both sides.
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Answer C
6 0
3 years ago
A cylinder has a height of 14 millimeters and a radius of 16 millimeters. What is its volume?
pantera1 [17]

Answer:

11253.76

Step-by-step explanation:

To find the volume of a cylinder we must utilise the volume of cylinder formula which is

→ Volume of cylinder = π × r² × h

Where 'r' is the radius and 'h' is the height so let's start substituting in the values,

→ Volume of cylinder = π × r² × h

⇒ Substitute in 3.14 for π, 14 for 'h' and 16 for 'r'

→ Volume of cylinder = 3.14 × 16² × 14

⇒ Simplify

→ Volume of cylinder = 11253.76

So a cylinder has a height of 14 millimetres and a radius of 16 millimetres has a volume of cylinder 11253.76 inches³

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3 years ago
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Answer:

C-f(x)=1.5x

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