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2 years ago

Solve the system by substitution x= -2y + 5 -8x - 3y = -1

Mathematics

1 answer:

SVEN [57.7K]2 years ago

3 0

Answer:

(-1,3)

Step-by-step explanation:

ur welcome

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The price for a car in 2015 was RM 54000. This was 10% higher compared to the year 2014?

-Dominant- [34]

Answer:

2014 price was $49,091

Step-by-step explanation:

I'm assuming you want to solve for 2014 year price...

2015 year price is 54,000 and was 10% higher than 2014 price, meaning 2015 price is 110% of 2014 price so...

p×110%=54,000

p=54,000/1.1

p=49,090.90

5 0

3 years ago

Can someone solve this?

ladessa [460]

First question:

Recall that $\cos^2x+\sin^2x=1$ and $\sqrt{x^2}=|x|$ for all $x$ . So

$\sqrt{1-\cos^2x}=\sqrt{\sin^2x}=|\sin x|$

$\sqrt{1-\sin^2x}=\sqrt{\cos^2x}=|\cos x|$

For $0$ , we expect both $\cos x>0$ and $\sin x>0$ (i.e. the sine and cosine of any angle that lies in the first quadrant must be positive). By definition of absolute value, $|x|=x$ if $x>0$ .

So we have

$\dfrac{\sqrt{1-\cos^2x}}{\sin x}+\dfrac{\sqrt{1-\sin^2x}}{\cos x}=\dfrac{\sin x}{\sin x}+\dfrac{\cos x}{\cos x}=1+1=\boxed{2}$

making H the answer.

Second question:

C is always true, because the inequality reduces to x > y.

6 0

3 years ago

50 POINTS!!!

Step2247 [10]

Answer:

well by looking at it , it would be for a.

3 0

3 years ago

Read 2 more answers

Which shows the following expression after the negative exponents have been eliminated?

Nina [5.8K]

Answer:

its A

Step-by-step explanation:

7 0

3 years ago

Over what interval is the function in this graph increasing?

KengaRu [80]

Answer:

-4 ≤x≤1

Step-by-step explanation:

Increasing means that as x goes from left to right, the y value is getting larger

The graph is increasing from -4 to 1

-4 ≤x≤1

7 0

3 years ago