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Nikolay [14]
2 years ago
6

I cant figure this out

Mathematics
1 answer:
Rudik [331]2 years ago
6 0

Answer:

x = 2 or x = -1/4

Step-by-step explanation:

Let's solve your equation step-by-step.

4x2−7x−2=0

For this equation: a=4, b=-7, c=-2

4x^2+−7x+−2=0

Step 1: Use quadratic formula with a=4, b=-7, c=-2.

x=\frac{-b\pm\sqrt{b^2-4ac} }{2a}

x=\frac{-(-7)\pm\sqrt{(-7)^2-4(4)(-2)} }{2(4)}

x=\frac{7\pm\sqrt{81} }{8}

x = 2 or x = -1/4

<u>Answer:</u>

x = 2 or x = -1/4

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You need to isolate the variable my dividing each side by factors that don’t contain the variable
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3 0
2 years ago
Factorise 14e-16<br> Please explain
rosijanka [135]

The expression 14e - 16 is an algebraic expression, and the factored expression is 2(7e - 8)

<h3>How to factor the expression 14e - 16?</h3>

The expression is given as:

14e - 16

Express both terms as a product of 2

14e - 16 = 2 * 7e - 2 * 8

Factor out 2 in the expression

14e - 16 = 2 * (7e - 8)

Remove the product sign

14e - 16 = 2(7e - 8)

Hence, the factored expression of 14e - 16 is 2(7e - 8)

Read more about factored expressions at:

brainly.com/question/723406

5 0
2 years ago
Ill mark brainiest please help me!!!!!!!!
IgorC [24]

Answer:

yes , 33^2 + 56^2 = 65^2   and obtuse

Step-by-step explanation:

<h2><u>Question 3</u></h2>

make use of the Pythagoras theorem

which is :

c^2 = a^2 + b^2

where c is the hypotenuse.

now put the values in the equation

65^2 = 56^2 + 33 ^2

the answer is :

<u>yes , 33^2 + 56^2 = 65^2</u>

<u></u>

<h2><u>Question 4</u></h2>

<u />

note if :

c^2 = a^2 + b^2 ----------- right

c^2 < a^2 + b^2------------ acute

c^2 > a^2 + b^2------------- obtuse

hence :

16 + 30 > 38

therefore its : <u>obtuse </u>

4 0
3 years ago
Factor -6g + 9g.<br> 6(g + 9)<br> -g(6 – 9)<br> -g(6 + 9)<br> g(6 + 9)
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Answer:g(−219.6g+45.6)

Step-by-step explanation:

−6g+9g(0.6)(g+9)−g(6−9)−g(6+9)g(6+9)

−219.6g2+45.6g

=g(−219.6g+45.6)

7 0
2 years ago
Read 2 more answers
Given: 2x + 30 = -4(5x -2);<br> Prove: x = -1
Lady_Fox [76]
2x + 30 = -20x + 8
2x + 20x = 8 - 30
22x = -22
x = 1
6 0
3 years ago
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