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FrozenT [24]
2 years ago
13

Select all of the following that are quadratic equations.

Mathematics
1 answer:
goldenfox [79]2 years ago
8 0

Answer:

1. x² + 3x - 5 = 0

2. x² - x = 3 x + 7

4. 7x² + 14x = 0

Step-by-step explanation:

A Quadratic equation takes the form;

ax² + bx + c = 0

a, b, c are constants and a cannot be 0.

Options 1 fits this;

x² + 3x - 5 = 0

Option 2 fits this as well;

x² - x = 3 x + 7  

x² -x - 3x - 7 = 0

x² - 4x - 7 = 0

Option 4 fits this as well if c = 0.

7x² + 14x + 0 = 0

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Please help!!! Question is below
Lilit [14]

Answer:

A. Obtuse

Step-by-step explanation:

Well we can cross out C and D just by looking at the triangle because the triangle is not equal and there is no right angle.

Also it is not B an acute because not all the angles are acute.

Hence, the answer is A. Obtuse

8 0
3 years ago
Read 2 more answers
Can anyone help me in Ptolemy's theorem?
GalinKa [24]

Answer:

Well, I'm not sure what you mean but Ptolemy's Theorem gives a relationship between the side lengths and the diagonals of a cyclic quadrilateral; it is the equality case of Ptolemy's Inequality. Ptolemy's Theorem frequently shows up as an intermediate step in problems involving inscribed figures.

8 0
2 years ago
In a class of 34 students, 19 of them are girls.
cluponka [151]

Answer:

55.8

Step-by-step explanation:

8 0
3 years ago
Factors of polynomial 3xsquare +x-4
Dennis_Churaev [7]

Answer:

(3x + 4)(x - 1)

Step-by-step explanation:

3x^2 + x - 4

use middle term break method

we need two number which gives 12 when multiplied and 1 when subtracted

3x^2 + (4 - 3)x - 4

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x(3x + 4) -1(3x + 4)

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4 0
2 years ago
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John uses 8/6 ounces of milk for his recipe . Mya uses 4/3 ounces of milk for her recipe. who uses more milk? explain your answe
Aleks04 [339]
To compare the fractions we need to find a common denomanator.
This means we need to find a common number (to the denomanator) in each number set of times tables.
In this case we can use 6 as a common denomator.

One of out fractions is already out of 6 so we just need to convert the other one. 
We can just double 4/3 to give us 8/6.
 
We can now compare the data, we have 8/6 and 8/6.
These fractions show that both John and Mya use the same amount of milk for their recipies, this being 8/6 or 1 1/3 as a mixed number.
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3 years ago
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