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ad-work [718]
3 years ago
14

Find the solutions to the equation below. Check all that apply. 2x^2 + 1-1x + 5 = 0

Mathematics
2 answers:
Serggg [28]3 years ago
7 0
Is -2 and option cause tbh that’s what i keep getting
IrinaK [193]3 years ago
6 0

Answer:

Step-by-step explanation:

The trick here is that the equation factors.

y= 2x^2 + 11x + 5

y = (2x + 1)(x + 5)

So either

2x + 1 = 0         subtract 1 from both sides      

2x = - 1             divide by 2  

2x = -1/2

or

x + 5 = 0          Subtract 5 from both sides

x = - 5

Answer: B and D

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Step-by-step explanation:

By showing that 0.20 is greater than 0.18 by doing 0.20-0.18 which gives a positive 0.02, thich means that its greater.

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Tan 45°. tan² 30° tan 60° <br>slove it​
makvit [3.9K]

Answer:

\frac{\sqrt{3} }{3} or \frac{1}{\sqrt{3} }

Step-by-step explanation:

We can break the problem into three parts,

tan45 = sin(45)/cos(45)=\frac{\frac{\sqrt{2}}{2} }{\frac{\sqrt{2}}{2} } =1

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tan60=sin60/cos60=\frac{\sqrt{3}/2 }{1/2} =\sqrt{3}

Then, tan45*tan^230*tan60=1*(1/sqrt(3))^2*sqrt(3)=1/sqrt(3)=sqrt(3)/3

Therefore, the solution is sqrt(3)/3

4 0
2 years ago
Which of the following formulas is used to find the circumference of a circle?
GrogVix [38]

Answer:

D

Step-by-step explanation:

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C = 2πr ( r is the radius ) → D

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7 0
3 years ago
Write an equivalent expression for 3 (1-7)
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I really just used the distributive property for this. 
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