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Akimi4 [234]
3 years ago
14

Select all of the following that are quadratic equations. 7x2 + 14x = 0 x3 - 3x2 + 1 = 0 5x - 7 = 0 x2 + 3x -5 = 0 x - 5 = 9x +

7 x2 - x = 3x + 7
Mathematics
1 answer:
Tpy6a [65]3 years ago
4 0

Answer:

7x2 + 14x = 0

x2 + 3x -5 = 0

x2 - x = 3x + 7  

Step-by-step explanation:

A quadratic equation has the highest power of x to the second power.  It must have x to the second power

7x2 + 14x = 0  quadratic

x3 - 3x2 + 1 = 0   not quadratic  but cubic

5x - 7 = 0  not quadratic  but linear

x2 + 3x -5 = 0   quadratic

x - 5 = 9x + 7  not quadratic but linear

x2 - x = 3x + 7  quadratic

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beks73 [17]
I got C. -14x - 2
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7 0
3 years ago
20 dividido por 5 preciso da conta armada se puder me ajudar agradeço muito
garri49 [273]

Answer:

20 dividido por 5 é 4

Eu espero que isso ajude

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7 0
3 years ago
Can you find the mean for these two questions:
Molodets [167]

1) Mean Absolute Deviation = 1.75


2) Mean = 244

7 0
4 years ago
Read 2 more answers
A car manufacturer produced 5,000 cars for a limited edition model. Dealers sold all of these cars at mean price
Alona [7]

Answer:

<h3>μₓ = 36,000 dollars</h3><h3>σ ₓ= 1,000 dollars</h3><h3 /><h3>Show work:</h3>

to find μₓ = 36,000 dollars:

Look in the question, it states that the mean is $36,000.

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3 0
3 years ago
Find the volume of a pyramid with a square base, where the perimeter of the base is 16.9\text{ cm}16.9 cm and the height of the
worty [1.4K]

Answer:

Volume of square based pyramid = 116.62 cm³

Step-by-step explanation:

Given:

Perimeter of square base = 16.9 cm

Height of pyramid = 19.6 cm

Find:

Volume of square based pyramid

Computation:

Perimeter of square base = 16.9 cm

4[Side] = 16.9

Side = 4.225 cm

Area of square = Side x Side

Area of square = 4.225 x 4.225

Area of square = 17.85 cm²

Volume of square based pyramid = [Area of square][Height of pyramid] / 3

Volume of square based pyramid = [17.85][19.6] / 3

Volume of square based pyramid = 349.86 /3

Volume of square based pyramid = 116.62 cm³

7 0
3 years ago
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