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zhannawk [14.2K]
3 years ago
14

Give the most appropriate reason for using three significant figures in reporting results of typical engineering calculations.a.

Three significant figures gives better than one-percent accuracy. b. Most of the original data used in engineering calculations do not have accuracy better than one percent. c. Historically slide rules could not handle more than three significant figures. d. Telephone systems designed by engineers have area codes consisting of three figures
Mathematics
1 answer:
Sophie [7]3 years ago
8 0

Answer:

The answer is "Option b".

Step-by-step explanation:

In the calculation of engineering or modeling, it is used to assess its necessary system, that performance, and also used to evaluate the distribution network adjustments, which is used to accommodate the slew of other distribution network adjustments, that's why except "choice b" all were incorrect.

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Find the quotient of 85 and 4find the quotient of 85 and4
nignag [31]

Quotient is 21

<u>Step-by-step explanation:</u>

Step 1:

Divide 85 by 4. Using long division method, find the quotient.   

  <u>21</u><u> </u>

4|85

  8

-------

     5

  -  4

--------

      1

4 0
3 years ago
1. Suppose y varies directly as x. If y = 3 when x = 15. then find x when y = 5.
KATRIN_1 [288]

Answer:

when y=3,X=15

here X is five times the value of y

so now when y= 5 then the value of X will be 25

hope you understand......

8 0
4 years ago
Marissa purchased a couch from The Furniture Find for $700 and agreed to purchase it on credit through the store. She was charge
Bad White [126]

Answer:

The interest is $35 so it ends up costing her $70

Step-by-step explanation:

7 0
3 years ago
If x+a is a factor of 2x²+2ax+5x+10,find a.
vazorg [7]

If x+a is a factor of the polynomial, it means that -a is a root of the polynomial.

In fact, if a polynomial p(x) has a root x_0 (i.e. p(x_0)=0), then the polynomial is divisible by (x-x_0)

In your case, you know that the polynomial is divisible by (x+a)=(x-(-a)), so -a is a solution.

Let's evaluate p(-a) and set it to zero:

2(-a)^2+2a(-a)+5(-a)+10 = 0 \iff 2a^2-2a^2-5a+10=0 \iff -5a+10 = 0 \iff a = 2

We can check the answer: if a=2 the polynomial becomes

2x^2+2(2)x+5x+10 = 2x^2+9x+10

And we're claiming that -a=-2 is a root of this polynomial:

2(-2)^2+9(-2)+10 = 2\cdot 4 - 18 + 10 = 0

5 0
3 years ago
Pls help
CaHeK987 [17]

everything is equivalent except 20/36

3 0
3 years ago
Read 2 more answers
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