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
mamaluj [8]
4 years ago
14

How do you use rounding or compatible numbers to estimate the sum of a number

Mathematics
1 answer:
jarptica [38.1K]4 years ago
7 0
Round the numbers, then add them
You might be interested in
What is the product of 5.86 × 10–7 and 3.1 × 104 1. Write the expression: (5.86 × 10–7)(3.1 × 104) 2. Rearrange the expression:
Reil [10]

Answer:

The value of the exponent of the base 10 for this product is -2.

Step-by-step explanation:

5.86\,\,10^{-7}\,\,*\,\,3.1\,\,10^4=18.166\,\,10^{-7+4}=18.166\,\,10^{-3}

Now, in order to represent this number in scientific notation, we need to reduce the coefficient 18.166 to a coefficient larger or equal to 1 and smaller strictly than 10, by using division or multiplications by powers of 10. In order to reduce it to 1.8166, we need to divide the original 18.166 by ten so we do the following in order not to change the given number (multiply and divide by ten at the same time):

\frac{18.166\,\,10}{10} \,10^{-3}=1.8166\,*\,10\,*\,10^{-3}=1.8166\,\,10^{-2}

3 0
4 years ago
Read 2 more answers
Solve the equation by using the square root property. Simplify all radicals.<br><br><br> 2x^2=3
Korvikt [17]
X^2 = 3/2;
Then, \sqrt{} x^{2}   =  \sqrt{3/2}  ;&#10;/x/ =  \sqrt{6}  /2;&#10;x = + or -  \sqrt{6}  /2;
3 0
3 years ago
The equation V = -2000t + 20,000 describes the value in dollars of a certain model of car after it is t years old. If a car is w
Masteriza [31]
Hi there

14000=-2000t+20000
Solve for t to find the age of the car
2000t=20000-14000
2000t=6000
T=6000/2000
T=3 years

Hope it helps
5 0
4 years ago
Read 2 more answers
Find the values of x on the interval [−π, π] where the tangent line to the graph of y = sin(x) cos(x) is horizontal. (Enter your
Lady_Fox [76]
A trig identity is <span>asinucosu=<span>a/2</span>sin(2u)</span>So you can write your equation as<span>y=sin(x)cos(x)=<span>1/2</span>sin(2x)</span>Use the crain rule here<span><span>y′</span>=<span>d/<span>dx</span></span><span>1/2</span>sin(2x)=<span>1/2</span>cos(2x)<span>d/<span>dx</span></span>2x=cos(2x)</span>The curve will have horizontal tangents when y' = 0.<span><span>y′</span>=0=cos(2x)</span>On the interval [-pi, pi], solution to that is<span><span>x=±<span>π4</span>,±<span><span>3π</span>4</span></span></span>
6 0
3 years ago
Read 2 more answers
Name all of the radii of the circle. Ok guys im soooo sorry!!!
stich3 [128]

Answer: B

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • Last year sales were 14200. Sales increased 57% this year. how much is the increased
    14·2 answers
  • 10. Using Base 10 blocks, show &amp; explain how to divide 35 (3 longs and 5 units) by 5. (DRAW
    8·1 answer
  • (PYTHAGOREAN THEOREM)
    15·1 answer
  • What is the square root of 1078?
    13·1 answer
  • Four brothers share 5 packs of stickers equally. In fraction, how much is each brother’s share?
    12·1 answer
  • Can you find the area in Circumference of a circle given the radius or diameter
    12·1 answer
  • Find the unknown side length, x. write your answer in simplest radical form.
    14·2 answers
  • Why would we start at (0,200)?
    10·1 answer
  • What is the volume of the prism with the dimensions given below? <br><br> 2/3m 1 1/8m 3 3/4m
    13·1 answer
  • PLSS HELP. <br> Simplify the expression. Write the answer using scientific notation (7x10^5)^2
    9·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!