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trasher [3.6K]
3 years ago
13

Kevin measured a line to be 12.4 inches long. If the actual length of the line is 15.7 inches, then what was the percent error o

f the measurement, to the nearest tenth of a percent?
Mathematics
1 answer:
Setler79 [48]3 years ago
5 0

Answer:

The percent error of the measurement, to the nearest tenth of a percent is 21.0\%

Step-by-step explanation:

Estimated length of a line = 12.4 inches

Actual length of the line = 15.7 inches

Error = 15.7 - 12.4 = 3.3 inches

Percent error of the measurement =\frac{3.3}{15.7}(100)=21.02 ≈ 21.0

So, the percent error of the measurement, to the nearest tenth of a percent is 21.0\%

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At a drive through restaurant Juan’s family ordered a small drink and m medium drinks. Alex’s family ordered m medium drinks and
sertanlavr [38]

<u>Answer: </u>

Expression x + 2my + z represents cost of order where x, y, z are cost of small , medium and large drinks (in dollars) respectively.

<u>Solution: </u>

Given that  

Juan’s family ordered a small drink and m medium drinks.

Alex family ordered m medium drinks and a large drink.

Need to write an algebraic expression which shows total cost of both order in dollars.

Let’s assume cost of one small drink = x

And assume cost of one medium drink = y

And assume cost of one large drink = z

So now cost of order of Juan’s family is equal to cost of 1 small drink + cost of m medium drinks = 1 \times x + m \times y

= x + my

And cost of order of Alex family is equal to cost of m medium drinks + cost of one large drink

= m x y + 1 x z

=my + z

So total cost of both order in dollars = x + my + my + z = x + 2my + z

Hence expression x + 2my + z represents cost of order where x , y , z are cost of small , medium and large drinks (in dollars) respectively.  

5 0
3 years ago
Hi I need question 5 solved using SOH CAH TOA!
Bond [772]

According to the trigonometric functions, we can see that angle x can be found through the one that involves the adjacent side and the hypotenuse, which in this case is the cos,

cos(x)=\frac{27}{30}

then, if we apply the inverse we can find the value of x,

\begin{gathered} cos^{-1}(cos(x))=cos^{-1}(\frac{27}{30}) \\ x\cong25.8 \end{gathered}

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Mademuasel [1]

Answer:

1 pound

Step-by-step explanation:

11/12 - 5/6

|

(11 × 6) - (5 × 12)

––––––––––––

12 × 6

|

= 6/72

|

6 ÷ 6

–––––

72 ÷ 6

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= 1/12

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D

C

Sorry if both aren't correct, it's been a while since i did this...

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