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AnnyKZ [126]
3 years ago
15

What is 4/7 of 210? please tell me I need to KNOW!!!!!. Please write your answer in simplest form

Mathematics
2 answers:
Dmitry_Shevchenko [17]3 years ago
8 0
The answer is 45 because idk
Anton [14]3 years ago
3 0
It is 120 because you have to divide 210 by 7 which is 30 then multiply by 4 so 30 x 4 = 120.
You might be interested in
Limit of x^2-81/x+9<br> As x goes toward -9
Semmy [17]
Hello,

Use the factoration

a^2 - b^2 = (a - b)(a + b)

Then,

x^2 - 81 = x^2 - 9^2

x^2 - 9^2 = ( x - 9).(x + 9)

Then,

Lim (x^2- 81) /(x+9)

= Lim (x -9)(x+9)/(x+9)

Simplity x + 9

Lim (x -9)

Now replace x = -9

Lim ( -9 -9)

Lim -18 = -18
_______________

The second method without using factorization would be to calculate the limit by the hospital rule.

Lim f(x)/g(x) = lim f(x)'/g(x)'

Where,

f(x)' and g(x)' are the derivates.

Let f(x) = x^2 -81

f(x)' = 2x + 0
f(x)' = 2x

Let g(x) = x +9

g(x)' = 1 + 0
g(x)' = 1

Then the Lim stay:

Lim (x^2 -81)/(x+9) = Lim 2x /1

Now replace x = -9

Lim 2×-9 = Lim -18

= -18




7 0
3 years ago
21. How many different integers can have the same absolute<br> value?<br> Give an example.
charle [14.2K]
2 integers at a time!
6 0
3 years ago
Write an inequality to represent the phrase: The sum of a number and 6 is no less than 31.
Nastasia [14]

Answer

6+x=31 0r 6+ x = <31

Step-by-step explanation:

3 0
3 years ago
Bryce started the summer with 4 hamster. by september he had 28 hamsters. what is the percent of change?
laiz [17]

Answer:

14.285% or 14.3% if rounded to the nearest one decimal place.

Step-by-step explanation:

4 ÷28 × 100

3 0
3 years ago
A circular track will be built around a square playing field that is 100 ft x 100 ft. What is the area of the smallest track tha
Anna35 [415]

Answer:

2501 ft2

Step-by-step explanation:

The other answers are in in2 or in. In this case you would not be looking for an answer in in2 or in.

4 0
3 years ago
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