1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vodka [1.7K]
2 years ago
8

A number x, rounded to 2 decimal places is 7.42 write down the error interval for x

Mathematics
1 answer:
Bond [772]2 years ago
5 0

Answer:

7.415 ≤ x < 7.425

Step-by-step explanation:

The number x was rounded to 2 decimal places to give 7.42.

Since rounded off to 2 decimal places, the error interval for x is half of 0.01 subtracted from and added to 7.42.

Thus;

7.42 ± (0.01/2)

(7.42 - 0.005),(7.42 + 0.005)

7.415, 7.425

Now, 7.425 will not be included in the internal because approximating it doesn't give 7.42.

Thus,the error interval is;

7.415 ≤ x < 7.425

You might be interested in
Ln a+3 + ln a-3 = ln 16
Lilit [14]
\bf log_{{  a}}(xy)\implies log_{{  a}}(x)+log_{{  a}}(y)\\\\&#10;and\qquad \textit{difference of squares}&#10;\\ \quad \\&#10;(a-b)(a+b) = a^2-b^2\qquad \qquad &#10;a^2-b^2 = (a-b)(a+b)\\\\&#10;-----------------------------\\\\&#10;ln(a+3)+ln(a-3)=ln(16)\implies ln[(a+3)(a-3)]=ln(16)&#10;\\\\\\&#10;ln[a^2-3^2]=ln(16)\impliedby \textit{removing ln() from both sides}&#10;\\\\\\&#10;a^2-9=16\implies a^2=16+9\implies a^2=25&#10;\\\\\\&#10;a=\pm\sqrt{25}\implies a=\pm 5
7 0
3 years ago
It takes Santa 2 minutes to deliver presents to 5 houses. At this rate, how long will it take him to deliver to a neighborhood o
dolphi86 [110]

Answer:

28

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
a beauty salon buys bottles of styling gel for $4.50 per bottle and marks up the price by 40%. for what price does the salon sel
I am Lyosha [343]
40%=0.4
0.4+1=1.4

4.5(1.4)=6.3

The answer is $6.30
7 0
3 years ago
PLEASE HELP!!! I REALLY NEED SOMEONE TO ANSWER THIS I HAVE ATTACHED A PICTURE
earnstyle [38]

Answer:

2.3 hours, or 2 hours & 18 minutes

Step-by-step explanation:

we are trying to find h when d is 56.68, so I replaced d with 56.68

56.68=24.6h+0.1\\

subtract 0.1 from both sides

56.58=24.6h

divide both sides by 24.6

2.3=h

7 0
3 years ago
Please help me ASAP <br><br><br><br> What is 7/16 x 1/2
Alja [10]

Answer: 7/32

Step-by-step explanation:

Multiply straight across the numerator and do the same for the denominator.

7x1=7 (numerator)

16x2=32 (denominator)

Answer is 7/32

5 0
2 years ago
Other questions:
  • What is true for an image and preimage in a reflection?
    14·2 answers
  • Interest is calculated by ____.
    11·2 answers
  • Solve for a.<br><br> a+0.3=−2
    14·2 answers
  • write an equation in slope intercept form for the line described. perpendicular to y = -1/2x + 2/3, passes through (2,3)
    14·1 answer
  • Using this graph as a reference, what is the solution for this system of equations?
    12·1 answer
  • Please help ASAP!!!!
    12·1 answer
  • Janet walked 3.75 miles yesterday what is the word form of 3.75
    6·2 answers
  • I hate math math math math math math math math math math math math math math math. Can anybody Teacher and Students please help
    10·2 answers
  • Each of 50 guests at a banquet will be served an 8-ounce portion of prime rib. If prime rib has a yield percentage of 60%, how m
    10·1 answer
  • The angle measure for 85 is
    14·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!