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3 years ago

10

Evaluate the expression for a^2 + b ÷3 when a = 3 and b = 6

1 answer:

Flura [38]3 years ago

8 0

Answer:

11

Step-by-step explanation:

3^2 + 6/3

9 + 2

11

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Shelley is searching online for airline tickets. Two weeks ago, the cost to fly from Orlando to Boston was $210. Now the cost

Brums [2.3K]

Answer:

1) It would be about a 55% increase. 2) It would be about a 79% increase

Step-by-step explanation:

I used process of elimination to figure out how much of a percentage would be needed by just multiplying 210 by different percentages until I found the answer.

Sorry I don't have like a definite formula or anything for you to figure these questions out... I hope someone else answers with a more definite answer!

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3 years ago

HELP ASAP!!!!!!!!!!!

Svetllana [295]

The second option! Hope this helps!

6 0

3 years ago

Solve sin 0 + 1 = cos20 on the interval 0 ≤ 0 < 2pi. Show work please!

yan [13]

Answer:

$\theta=\frac{\pi}{2},\frac{3\pi}{2}\frac{2\pi}{3}\frac{4\pi}{3}$

Step-by-step explanation:

You need 2 things in order to solve this equation: a trig identity sheet and a unit circle.

You will find when you look on your trig identity sheet that

$cos(2\theta)=1-2sin^2(\theta)$

so we will make that replacement, getting everything in terms of sin:

$sin(\theta)+1=1-2sin^2(\theta)$

Now we will get everything on one side of the equals sign, set it equal to 0, and solve it:

$2sin^2(\theta)+sin(\theta)=0$

We can factor out the sin(theta), since it's common in both terms:

$sin(\theta)(2sin(\theta)+1)=0$

Because of the Zero Product Property, either

$sin(\theta)=0$ or

$2sin(\theta)+1=0$

Look at the unit circle and find which values of theta have a sin ratio of 0 in the interval from 0 to 2pi. They are:

$\theta=\frac{\pi}{2},\frac{3\pi}{2}$

The next equation needs to first be solved for sin(theta):

$2sin(\theta)+1=0$ so

$2sin(\theta)=-1$ and

$sin(\theta)=-\frac{1}{2}$

Go back to your unit circle and find the values of theta where the sin is -1/2 in the interval. They are:

$\theta=\frac{2\pi}{3},\frac{4\pi}{3}$

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3 years ago

Which sum will be neither positive nor negative?<br> 07+(-6)<br> 0 3+2<br> 0-6 + 6<br> 0-4-(-4)

makkiz [27]

Step-by-step explanation:

The awnser is -6+6 because it would end up being 0, which is not positive nor negative

4 0

3 years ago

PLEASE ANSWER QUICK: How do you find the distance between two points on a number line when the units are variables.

9966 [12]

If we want to find the distance between two points on a number line use the distance formula:

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3 years ago

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