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Nimfa-mama [501]
3 years ago
15

It takes 5.5 hours to travel 330 miles from City A to city B what is the unit rate?

Mathematics
1 answer:
bearhunter [10]3 years ago
7 0
330 miles / 5.5 hours

= 54.54 miles/hour.
Glad I could help!
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PLEASE HELP!!! I don’t understand
asambeis [7]

Answer:

Step-by-step explanation:

Use the half angle identity for cosine:

cos(x/2)=+ or - sqrt(1+cos(x))/sqrt(2)

I'm going to figure out the sign part first for cos(x/2)...

so x is in third quadrant which puts x between 180 and 270

if we half x, x/2 this puts us between 90 and 135 (that's the second quadrant)

cosine is negative in the second quadrant

so we know that

cos(x/2)=-sqrt(1+cos(x))/sqrt(2)

Now we need cos(x)... since we are in the third quadrant cos(x) is negative...

If you draw a reference triangle sin(x)=3/5 you should see that cos(x)=4/5 ... but again cos(x)=-4/5 since we are in the third quadrant.

So let's plug it in:

cos(x/2)=-sqrt(1+4/5)/sqrt(2)

No one likes compound fractions (mini-fractions inside bigger fractions)

Multiply top and bottom inside the square roots by 5.

cos(x/2)=-sqrt(5+4)/sqrt(10)

cos(x/2)=-sqrt(9)/sqrt(10)

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cos(x/2)=-3sqrt(10)/10

3 0
3 years ago
Solve for x. x3 = 216
vampirchik [111]
I'm assuming the equation is x^3 = 216 or x^3 = 216 (both mean the same thing)

If so, then the solution to x^3 = 216 is x = 6

<span>We can find this by taking the cube root of both sides
</span>x^3 = 216
x = 216^(1/3) .... 1/3 power means cube root
x = 6

Checking the answer:
x^3 = 216
6^3 = 216
6*6*6 = 216
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So once again the answer is x = 6. This is assuming the initial assumption made at the top of the problem holds up.
7 0
3 years ago
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Answer:

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Step-by-step explanation:

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x-$22.42=$2.68

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x=$25.10

8 0
2 years ago
Decimal representation of rational number 8by 27 is what??
irakobra [83]

Answer:

8/27 is represented in decimal as 0.2962962963

4 0
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Mars2501 [29]

Answer:

Step-by-step explanation:

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7 0
2 years ago
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