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
saul85 [17]
3 years ago
13

Please help i will give out brainliest

Mathematics
1 answer:
Aleksandr-060686 [28]3 years ago
4 0

Answer:

a.  L.B. = 20.5

b.  U.B. = 21.5

Step-by-step explanation:

Length is measured 21 cm correct to 2 significant figures

a.  Lower bound of 21

  =  20.5 < 21

  = 20.5

b. Upper bound of 21

   = 21 < 21.5

   = 21.5

You might be interested in
What is the value of q in the equation 5q-10=75
Alex

Answer:

q=17

Step-by-step explanation:

5q-10=75

add 10 to both sides to cancel out -10 on the left side

5q-10+10=75+10

5q=85

divide both sides by 5 to get rid of the 5 in 5q

5q/5=85/5

resulting in:

q=17

5 0
3 years ago
last year 950 people attended a towns annual parade. this year 1,520 people attended what was the percent increase in attendance
inessss [21]
<span>To calculate the percentage increase: First: work out the difference (increase) between the two numbers you are comparing. Then: divide the increase by the original number and multiply the answer by 100.
1520-950=570
570÷950= 0.6 × 100=60%


</span>
7 0
3 years ago
Write a multiplication equation with 1/2 as a factor (EXPLAIN)
jolli1 [7]

16 BECAUSE YOU  ADD THE CUT UP APPLES AND MAKE IT A FRACTION
4 0
3 years ago
An airplane travels 2951 miles in 6.5 hours. what is the speed of the airplane in miles per hour?
Gre4nikov [31]
The speed of the airplane = 2951 / 6.5 = 454 mph
4 0
3 years ago
Complete each ordered pair so that it is a solution of the given linear equation
Anastasy [175]

Answer:

(3, -2) and (9, 0)

Step-by-step explanation:

x-3(-2)=9

x+6= 9

x=3

9-3y=9

-3y=0

y=0

3 0
3 years ago
Other questions:
  • Please Help!
    15·1 answer
  • 4a+13=33<br> please answer this i need it<br> please
    14·1 answer
  • Slader "Two balls are chosen randomly from an urn containing 8 white, 4 black, and 2 orange balls. Suppose that we win $2 for ea
    14·1 answer
  • Determine what type of model best fits the given situation: Every day, half a bacteria population dies.
    8·1 answer
  • I need answers ASAP!!
    9·2 answers
  • the number of patients treated at dr. whites dentist office each day for nine days is 4, 4, 5, 4, 4, 5, 5, 5, 4. find the mean,
    13·1 answer
  • A lumber company is making boards that are 2564.0 millimeters tall. If the boards are too long they must be trimmed, and if the
    8·1 answer
  • Find the following angles<br>​
    9·2 answers
  • PLSSSSSS HELP GIVING 10 POINTS
    8·1 answer
  • Jon is cooking enough lentils for lentil barley soup and lentil salad .The lentil barely soup recipe calls for 1/2 cup of dried
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!