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geniusboy [140]
3 years ago
5

Does Anyone Know How To Do This? Please help me

Mathematics
1 answer:
ad-work [718]3 years ago
7 0

Answer:(0,4,3i,-3i)

Step-by-step explanation:

x²(x²+9)-4x(x²+9)=0

(x²-4x)(x²+9)=0

x(x-4)=0

x₁=0

x₂=0+4=4

x₃=√-9=3i

x₄=√-9=-3i

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The length of a rectangle is 5 feet more than twice the width. The perimeter is 130 feet. Find the dimensions.
Dahasolnce [82]
So,

The problem tells us that the length of the rectangle is 5 feet more than twice the width.
Mathematically:
length = 5 + 2width
l = 5 + 2w


We know that the perimeter is 2l + 2w.
2l + 2w = 130

2(5 + 2w) + 2w = 130

Distribute
10 + 4w + 2w = 130

Collect Like Terms
10 + 6w = 130

Subtract 10 from both sides
6w = 120

Divide both sides by 6
w = 20

The width is 20.


Since
l = 5 + 2w

Substitute
l = 5 + 2(20)

Multiply
l = 5 + 40

Collect Like Terms
l = 45

The length is 45.

Check
2l + 2w = 130

2(45) + 2(20) = 130

90 + 40 = 130

130 = 130

Width: 20 ft.
Length: 45 ft.
5 0
4 years ago
2. A laser printer prints 200 pages in 4
Ber [7]

Answer: I think the answer is 1250.

Step-by-step explanation:

I did 200 divided by 4 which is 50. I then multiplied 50 * 25 and got 1250.

6 0
3 years ago
Guys please which one is the correct answer I need help!
Anika [276]

Answer:

D is your answer

Step-by-step explanation:

4 0
3 years ago
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Use the number line. What fraction of 1 foot is 3 inches? What fraction of 1 yard is 3 inches?
alexira [117]

Answer:

1 foot----------------1/4

Step-by-step explanation:

I yard----------------1/12

8 0
3 years ago
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I'm completely loss I need help on the entire process to solve this problem
Alja [10]
Well if upit gives you anything else then that would be great
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