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Vika [28.1K]
3 years ago
15

Simplify to create an equivalent expression.

Mathematics
1 answer:
Elena L [17]3 years ago
7 0

Answer:

8y-15

Step-by-step explanation:

Expanding the bracket,

-y-(-9y-15)=8y-15

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A local university accepted 2300 students out of 4500 applicants for admission. What was the acceptance rate expressed as a perc
mario62 [17]
(2300 / 4500) * 100 = 51.1%

Hope this helps! :)
5 0
4 years ago
How many megabytes of data can a 4.7 gigabyte dvd store?
dedylja [7]
The answer is 4700 megabytes.

1 giga = 1000 mega

1 gigabyte = 1000 megabyte
4.7 gigabyte = x megabyte

1 gb : 1000 mb = 4.7 gb : x
x = 1000 mb * 4.7 gb : 1 gb
x = 4700 mb 
3 0
3 years ago
A circle has an area of 36 m2. What is the area of a 40 sector of this circle?
ruslelena [56]
The ratio of the area of the sector (S) to the area of the entire circle (C) is equal to the ratio of the angle subtended to form the sector (As) to the angle for the whole revolution (Ac)
                                  S / C = As / Ac
Substituting the given,
                                  S / 36 m² = 40 degrees / 360 degrees  
Solving for S gives, S = 4. Thus, the area of the sector is 4 m².
6 0
3 years ago
If you ride your bike at an average speed of 15 mph, how long will it take you to ride to your grandparents’ home? Express your
saveliy_v [14]

Answer:

It will take you 0.24 hour to ride to your grandparents’ home

It will take you 14 minutes to ride to your grandparents’ home

Step-by-step explanation:

- Your average speed is 15 miles per hour

- The distance to grandmother home is 3.67 miles

- You need to know how long it will take you to do that

∵ Distance = speed × time

∵ Distance = 3.67 miles

∵ Speed = 15 miles per hour

- Substitute these values in the rule above

∴ 3.67 = 15 × time

- Divide both sides by 15 to find the time

∴ Time = 0.24 hour

* It will take you 0.24 hour to ride to your grandparents’ home

- You need to convert the time from hour to minutes

∵ 1 hour = 60 minutes

∵ Time = 0.24 hour

∴ Time = 0.24 × 60 = 14.4

∴ Time ≅ 14 minutes

* It will take you 14 minutes to ride to your grandparents’ home

5 0
4 years ago
Evaluate the function.<br> f(x) = -3x2 + 3x + 7<br> Find f(8)
mart [117]

Answer:

f(8)=-161

Step-by-step explanation:

f(x) = -3x^2 + 3x + 7

f(x) = -3x2 + 3x + 7

f(8)= -3(8)^(2) + 3(8) + 7= -192+24+7=-161

6 0
3 years ago
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