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AveGali [126]
3 years ago
13

Your teacher asks the class to evaluate the expression. Your classmate gives an incorrect answer of 256. Evaluate the expression

. Then find the likely error
Mathematics
1 answer:
Leya [2.2K]3 years ago
8 0

Answer:

What expression?

Step-by-step explanation:

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Please help and thank you!
Stolb23 [73]

The conversion is

x =  r \cos \theta

y = r \sin \theta

So

\dfrac y x = \tan \theta

We're given the fairly unusual

\theta = -\frac 5 2

It's fairly unusual because usually an angle is given in degrees or radians, and typically the radians are a fraction times pi. We'll assume radians.

\dfrac y x = \tan \theta = \tan(-5/2) \approx 0.747

Ah, there's our .75. The approximate answer is

y = 0.75 x

Third choice.

The exact answer is

y = x \tan( -\frac 5 2)

also a line through the origin.

3 0
3 years ago
Round 187.890 to the nearest 10 000
stellarik [79]

Answer:

190,000

190,000

190,000

Step-by-step explanation:

190,000

190,000

6 0
3 years ago
The ordered pair(5,-3) is a solution to which of the following inequalities?
Dmitrij [34]

A plumber worked 26 hours a week for half a year. If his hourly wage was $40, how much did he earn during this time period?

<span> <span>A.</span>$1040</span><span> <span>B.</span>$27,040</span><span> <span>C.</span>$54,080</span><span> <span>D.</span><span>$520</span></span>
7 0
3 years ago
2.10 volume ratios
Colt1911 [192]

Answer:

  • 512 : 1331

Step-by-step explanation:

<u>The volume is the product of three dimensions, so the ratio of volumes is the cube of the scale factor:</u>

  • k = 8/11
  • k³ = (8/11)³ = 512 / 1331
7 0
2 years ago
4 + 6x + 5 = 7x Could someone help me? Thanks :) And could you also show how u did it
matrenka [14]

Answer:

x=9

Step-by-step explanation:

combine like terms

4+6x+5=7x

4+5=9

9+6x=7x

to get 6x with 7x subtract 6x from both sides as its positive

6x-6x=0

7x-6x=x

9=x

x=9

4 0
3 years ago
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