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Maslowich
3 years ago
5

In March, volunteers for a charity walkathon in Toronto raised $89,351. Volunteers in Montreal raised $102,459. Volunteers in Ed

monton raised $78,505. a. Round each amount to the nearest thousand dollars. b. Add the rounded amounts to estimate the total amount of money raised. c. Use the estimate to choose the exact total from among the following.
Mathematics
2 answers:
shepuryov [24]3 years ago
4 0
I would think it is round each amount to the nearest thousand dollars. 
balandron [24]3 years ago
3 0

Answer:

1.a. 10,200,000  

b. 43,000  

c. 870  

d. 4,000,000

2.a.  

$89,000

$102,000

$79,000

b. 270,000

c. 270,315

Step-by-step explanation:

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We will now use energy considerations to find the speed of a falling object at impact. Artiom is on the roof replacing some shin
ohaa [14]

Answer:

v = 8.49 m/s rounded off to 3 significant figures

Step-by-step explanation

Using Energy Conservation

U = Tk + Vp (Sum of kinetic Tk Energy and gravitational potential Vp Energy)

  1. At height = 3.67 m, the hammer was still or the velocity was negligible; hence, vi = 0 m/s.
  2. Ui = 0 + mgh
  3. At ground all potential energy is converted to kinetic; hence, Uf = \frac{1}{2}mv².
  4. Since total energy of the system remains constant we equate Ui to Uf.
  5. Ui = Uf
  6. mgh = \frac{1}{2}mv²
  7. After cancelling out masses and making v the subject of the formula we get:

v = \sqrt[2]{2gh} = \sqrt[2]{2*9.81*3.67} = 8.49 m/s rounded off to 3 significant figures

3 0
3 years ago
Which compound sentence has its solution set shown on the graph below
musickatia [10]

A compound inequality is a sentence with two inequality statements joined either by the word “or” or by the word “and.” “And” indicates that both statements of the compound sentence are true at the same time.

“Or” indicates that, as long as either statement is true, the entire compound sentence is true.

Now as shown in the graph, the solution inequality of the graph is :

x > 3 and x < 5   [please note, circles in the graph indicate exclusion, dots indicate inclusion. in the graph given circles are shown, so it depicts exclusion]

Now let's solve each option to find if it fits in with the above inequality

Option 1 : 2x-4 > 6 or 3x < 9

⇒ x > 5 or x < 3

Option 2 : 2x - 4 < 6 and 3x > 9

⇒ x < 5 and x > 3

Option 3 : 3x + 8 > -7 or -4x < 12

⇒ 3x > -15 or x < -3

⇒ x > -5 or x < -3

Option 4 : 3x + 8 < -7 and -4x > 12

⇒ 3x < -15 and x > -3

⇒ x < -5 and x > -3


So the compound sentence in option 2 : 2x - 4 < 6 and 3x > 9

has its solution set on the graph.


8 0
3 years ago
One grocery clerk can stock a shelf in 20 min. A second clerk requires 45 min to stock the same shelf. How long would it take to
Lorico [155]

<u>Answer: </u>

clerk A and clerk B can simultaneously stock a shelf in \frac{180}{13} minutes

<u>Explanation:</u>

Let the first clerk be A and the second clerk be B

A can stock a shelf in 20 min

B can stock a shelf in 45 min

Consider the complete work to be W

A’s rate of stocking = \frac{W}{20} per minute

B’s rate of stocking = \frac{W}{45} per minute

When, A and B work simultaneously, rate of work done = \frac{W}{20}+\frac{W}{45}

Total work done simulatenously = \frac{W}{\frac{W}{20}+\frac{w}{45}}

=\frac{20 * 45}{20+45}

Therefore, clerk A and clerk B can simultaneously stock a shelf in \frac{180}{13} minutes

8 0
3 years ago
How do you get the variable p alone in the equation 2p-12?
svp [43]
Divide both sides by 2 Since 2 Is multiplying P.
2P-12=p
/      /
2     2
P=6
8 0
3 years ago
jared has total of aed 123.34 on his investment over 2 months he lost an equal amount of money each month. the following describ
Aliun [14]
Where is the “following”? is there a picture?
8 0
2 years ago
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