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stira [4]
3 years ago
14

There are 2,920 seats in an auditorium. the audition has 20 sections with the same number of seats in each section. how many sea

ts are in each section. Explain how you got the answer
Mathematics
1 answer:
OverLord2011 [107]3 years ago
3 0
143 seats
because 2920 seats/20 sections=143 seats in each section
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Calculate the value of (6.72 10^5)+ (3.2 x 10^4)<br> Give your answer in standard form.
dangina [55]

Answer:

7.04\cdot 10^{5} <em>or 704,000</em>

Step-by-step explanation:

<u>Standard Form of Numbers</u>

Any number that we can write as a decimal number between 1.0 and 10.0, multiplied by a power of 10, is said to be in Scientific Notation. Some authors consider standard form and scientific form as the same, but others state that standard form is the common form of expressing numbers, i.e., a sequence of digits, separated by thousands by a comma, and separated from the decimal part by a dot.

We'll give here both answers.

We have to calculate:

6.72\cdot 10^{5}+3.2\cdot 10^{4}

Since the numbers don't have the same exponent, we must make them equal. Let's make the second number have an exponent of 5, by dividing by 10:

6.72\cdot 10^{5}+3.2\cdot 10^{4}=6.72\cdot 10^{5}+3.2/10\cdot 10^{5}

6.72\cdot 10^{5}+3.2\cdot 10^{4}=6.72\cdot 10^{5}+0.32\cdot 10^{5}

Now we add:

6.72\cdot 10^{5}+3.2\cdot 10^{4}=7.04\cdot 10^{5}

It's correctly expressed in scientific notation. Now to convert to 'standard form', multiply by 10^5=100,000:

6.72\cdot 10^{5}+3.2\cdot 10^{4}=7.04*100,000=704,000

7 0
3 years ago
Which number sentence is represented by the number line?
strojnjashka [21]

Answer:

8

Step-by-step explanation:

it is 8

5 0
2 years ago
Given P(A) = 0.8, P(B) = 0.51 and P(ANB) = 0.468, find the value of
masha68 [24]

Answer:

Step-by-step explanation:

P(BA)=P(B)+P(A)-P(AnB)

= 0.51+0.8-0.468

=1.31-0.468

=0.842

P(BA) = 0.842

7 0
3 years ago
If f(x)=2x^2+5 square root (x-2) complete the followinf statement: f(3)=
12345 [234]

Answer:f(3) =  23


Step-by-step explanation:

2(3)² + 5√(3 - 2)  

f(3) = 2(9) + 5√(1)  

f(3) = 18 + 5(1)  

f(3) = 18 + 5  

f(3) = 23

4 0
3 years ago
una wants to buy a video game system for $400. She has $50 and id saving $25 each week. solve the equation 25w+50= 400
Amiraneli [1.4K]
W=14. This would her saving for 14 weeks at $25. 25*14=350 and + the $50 already saved.
7 0
3 years ago
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