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34kurt
4 years ago
15

Find the perimeter of a triangle with sides 2x - 3y, x2 + y and 2x + y units

Mathematics
1 answer:
Lesechka [4]4 years ago
8 0
Perimeter = (2x -3y) + (x² + 7) + (2x + y)
Perimeter = 2x -3y + x² + 7 + 2x + y
Perimeter = x² + 4x - 2y + 7

------------------------------------
Answer: 
x² + 4x - 2y + 7
------------------------------------
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Does 2,028 estimate to 2,000 or to 2,100
melomori [17]
The answer is 2,000 because 28 is lower than 50.
5 0
4 years ago
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Find the x of (2x+8)+(71-x)=180
fomenos

Answer:

x=100

Step-by-step explanation:

(2x+8)+(71-x)=180

2x+8+71-x=180

x+80=180

x=180-80

x=100

8 0
4 years ago
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Edward drove 275 miles in 212 hours and 357.5 miles in 314 hours. If he drove at a constant rate, how much distance did he trave
bezimeni [28]

Answer: 1.2 Miles

Step-by-step explanation:

Add total miles together: 275 + 357.5 = 632.5 miles total

Add total hours together: 212 + 314 = 526 hours total

Divide total miles driven by total time:

632.5 ÷ 526 = 1.20247147843 miles an hour

7 0
2 years ago
The perimeter of a rectangle is 20 ft. The width 8th 4 ft less than the length. Find the dimensions of the rectangle
Gala2k [10]
Perimiter is 20ft
width is
what
do you mean the width is  8 feet less than the length? or 4ft less?

anyway

P=2(L+W)
20=2(L+W)
divide by 2
10=L+W
and
L=10-W

width is 4ft less than length (I assuming)
W=-4+L
repalce W with -4+L
L=10-(-4+L)
L=10+4-L
L=14-L
2L=14
L=7
W=-4+L
W=-4+7
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it is 7ft by 3ft
7 0
3 years ago
Eli wants to combine 0.5 gallon of a 10% acid solution with some 35% acid solution to make a 15% acid solution. Which equation c
Alex17521 [72]

Answer:

Equation is 0.5 \text{ gal }\times(0.1)+ x\text{ gal }\times (0.35)=(0.5 + x)\times (0.15)

0.125 gallons of the 35% acid solution Eli should add.

Step-by-step explanation:

Given : Eli wants to combine 0.5 gallon of a 10% acid solution with some 35% acid solution to make a 15% acid solution.

To find : Equation can you use to determine how many gallons of the 35% acid solution Eli should add?

Solution :

Let x be the gallons of the 35% acid solution.

According to question,

For 0.5 gallon of a 10% acid solution = 0.5\times 0.1

For x gallon of a 35% acid solution = x\times 0.35

For (0.5+x) gallon of a 15% acid solution = 0.5+x\times 0.15

The equation form is

0.5 \text{ gal }\times(0.1)+ x \text{ gal }\times(0.35)= (0.5+x)\times (0.15)

Solving the above equation,

0.05+0.35x = 0.075 + 0.15x

0.2x = 0.025

x =\frac{0.025}{0.2}

x=0.125

Therefore, 0.125 gallons of the 35% acid solution Eli should add.

The equation is 0.5 \text{ gal }\times(0.1) + x \text{ gal }\times(0.35) =(0.5 + x)\times (0.15)

3 0
3 years ago
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