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marissa [1.9K]
2 years ago
8

What is the solution of the inequality-0.4x - 1.2 > 0.8

Mathematics
1 answer:
strojnjashka [21]2 years ago
3 0

Answer:

x<-5

Step-by-step explanation:

-0.4x>0.8+1.2

-0.4x>2

x<-5

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Use double angle formulas to find the exact value of sin2x,cos2x, and tan2x
denis-greek [22]
Sin2x = 2sinxcosx;
cos2x = (cosx)^2 - (sinx)^2;
tan2x = (sin2x)/(cos2x);

 cosx = 5/13 from formula (sinx)^2 + (cosx)^2 = 1;

=> sin2x = 120/169; 
.................................

5 0
3 years ago
Brainliest, but dont darn answer IF YOUR NOT GOING TO EXPLAIN HOW YOU GET YOUR ANSWER, please and thanks, appreciate ya!
stich3 [128]

Answer:

A. 2/3

Step-by-step explanation:

Simplify it by four, 8 / 4 = 2, 12 / 4 = 3

3 0
2 years ago
Read 2 more answers
What is parallel to 2x-y=1 and contains (4, -6)? Please show your work!
Contact [7]

k:\ y=m_1x+b_1\\\\l:\ y=m_2x+b_2\\\\l\ ||\ k\iff m_1=m_2\\\\\text{We have}\\\\k:\ 2x-y=1\ \ \ |-2x\\-y=-2x+1\ \ \ \ |\cdot(-1)\\y=2x-1\to m_1=2\\\\l:\ y=m_2x+b\\\\l\ ||\ k\iff m_2=2\\\\l:\ y=2x+b\\\\\text{The line l contains (4, -6)}\\\\\text{Put the values of coordinates to the equation of line l}\\\\-6=2(4)+b\\-6=8+b\ \ \ \ \ |-8\\b=-14\\\\Answer:\ y=2x-14\to 2x-y=14

5 0
3 years ago
Vera is using her phone.Its battery life is down to 2/5,and it drains another 1/9 every other. How many hours will her battery l
Margarita [4]

Let x be total hours of battery life. We have been given that battery life of Vera's phone is down to 2/5. So remaining battery life,

1-\frac{2}{5}=\frac{5-2}{5}=\frac{3}{5}

We have been also given that it drains another 1/9 every other hour. Now let us substitute our given information into an equation.

\frac{1}{9}\cdot x=\frac{3}{5}

Now we will solve for x.

x=\frac{3\cdot 9}{5}=\frac{27}{5}

x=(5+\frac{2}{5})hours

Let us convert 2/5 into minutes. We know 1 hour has 60 minutes.

60\cdot \frac{2}{5}=24\text{minutes}

Therefore, remaining battery life will be 5 hours and 24 minutes.



3 0
3 years ago
Read 2 more answers
Can u help me answer this I am confused.
Veronika [31]
If you read the graph it’s helps Uu better
8 0
3 years ago
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