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
Goryan [66]
3 years ago
14

write two numbers that when rounded to the greatest place value have an estimated sum of 11000 and an estimated difference of 30

00, then find the exact sum and the exact difference and explain how you have reached your answers and why they will work.​
Mathematics
1 answer:
Nookie1986 [14]3 years ago
7 0

Answer:

First, we have rounded numbers A and B, and we know that:

A + B = 11000

A - B = 3000

Now we can solve this system of equations as:

Isolating one variable in one of the equations, i will choose A in the second equation:

A = 3000 + B.

Now we can replace this into the other equation:

3000 + B + B = 11000

2*B = 11000 - 3000 = 8000

B = 8000/2 = 4000

and:

A - 4000 = 3000

A = 3000 + 4000 = 7000.

But remember that our original numbers are not exactly whole numbers, they are rounded up, so we could write them as:

A = 6999.8 (that would be rounded up to 7000)

B = 3999.7 (that would be rounded up to 4000)

The sum is:

A + B = 10999.5 (notice that this would be rounded up to 11000)

A - B =  3000.1 (this would be rounded down to 3000)

You might be interested in
Which describes the correct procedure when converting a number from scientific notation to standard notation if the power of 10
jenyasd209 [6]

Answer:

A. Move the decimal point to the left

Step-by-step explanation:

Given that:

The scientific notation = 10⁻¹⁰

Let recall;

That the standard notation usually took the form of an inverse:

For example;

Let say 10⁻¹ will be \dfrac{1}{10} in scientific notation;

SO, \dfrac{1}{10} = 0.1

Now; we are given 10⁻¹⁰ as a scientific notation,

To standard notation, we get:

10^{-10} = \dfrac{1}{100}

= 0.01

Thus, it is true to say that the decimal point will be moved to the left side when converting a number from scientific notation to standard notation if the power of 10 is  -10.

4 0
2 years ago
Choose ALL possible answers
muminat
Select all the correct answers:
1) Yes

2) No
x=8→h(8)=2(8)^2+5(8)+2=2(64)+40+2=128+40+2→h(8)=170
x=8→f(8)=3^8+2=6,561+2→f(8)=5,563>170=h(8)

3) Yes

4) No

5) Yes
rg=[g(3)-g(2)]/(3-2)=[g(3)-g(2)]/1→rg=g(3)-g(2)
g(3)=20(3)+4=60+4→g(3)=64
g(2)=20(2)+4=40+4→g(2)=44
rg=64-44→rg=20

rf=f(3)-f(2)
f(3)=3^3+2=27+2→f(3)=29
f(2)=3^2+2=9+2→f(2)=11
rf=29-11→rf=18

rh=h(3)-h(2)
h(3)=2(3)^2+5(3)+2=2(9)+15+2=18+15+2→h(3)=35
h(2)=2(2)^2+5(2)+2=2(4)+10+2=8+10+2→h(2)=20
rh=35-20→rh=15

rg=20>18=rf
rg=20>15=rh

6)  No
x=4→g(4)=20(4)+4=80+4→g(4)=84
x=4→h(4)=2(4)^2+5(4)+2=2(16)+20+2=32+20+2→h(4)=54
x=4→f(4)=3^4+2=81+2→f(4)=83>54=h(4)
f(4)=83<84=g(4)
7 0
3 years ago
Plz help asap... Explain as much as possible to me plz
Solnce55 [7]

Answer:

see explanation

Step-by-step explanation:

Since the 2 figures are similar then the ratios of corresponding sides are equal, that is

\frac{8}{x} = \frac{18}{6} ( cross- multiply )

18x = 48 ( divide both sides by 18 )

x = \frac{48}{18} = \frac{8}{3} = 2 \frac{2}{3}

Similarly

\frac{5}{y} = \frac{18}{6} ( cross- multiply )

18y = 30 ( divide both sides by 18 )

y = \frac{30}{18} = \frac{5}{3} = 1 \frac{2}{3}

3 0
3 years ago
Sam is saving money to buy himself a new phone. He currently has $95. He is able to save about $20 a week. Let represent how muc
Sunny_sXe [5.5K]

Answer:

the correct answer is d

Step-by-step explanation:

w(s)=weeks saved and 20s is the gain of 20 dollars every week. and the 95 is the starting amount that sam had

4 0
2 years ago
What is 3/2 in a mixed number
antoniya [11.8K]
Bonjour ,
 
3/2 = 2/2 + 1/2 
3/2 =    1  + 1/2
3/2 = 1  \frac{1}{2}
7 0
3 years ago
Read 2 more answers
Other questions:
  • Shannon is making identical balloon arrangements for a party she has 24 white balloons and 60 blue balloons she wants to arrange
    13·2 answers
  • Evaluate. write your answer as a fraction in simplest form. 2/3^3
    8·1 answer
  • 3. Find x and y<br> c<br> actic<br> G<br> H<br> 26<br> D<br> 80
    5·1 answer
  • Which best defines an algebraic expression?
    6·1 answer
  • Please help right nkw
    14·2 answers
  • at a country concert,the ratio of number of the Boys to the number of girls is 2:7 if there are 250 more girls than boys how man
    11·1 answer
  • You are graphing y&lt;2x +1 what type of line do you use and where do you shade ?
    9·1 answer
  • 50 points
    10·2 answers
  • Help! I'll give 30 points!!!!!!​
    5·1 answer
  • Select the correct answer. Simplify the expression so there is only one power for each base. A. B. C. D. E.
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!