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larisa [96]
3 years ago
13

72 is what percent of 180

Mathematics
2 answers:
Minchanka [31]3 years ago
8 0
In this type of problems only be careful about putting the numerator and denominator correctly. Then the problem becomes easy.
Percentage of the number 72 of 180 = (72/180) * 100
                                                           = (72/18) * 10
                                                           = 4 * 10
                                                           = 40 percent
So 72 is 40% of the number 180.I hope the procedure for finding the percentage of numbers is clear for you to understand. Based on this procedure and your understanding, you can attempt and successfully complete any similar kind of problems without requiring any help from outside.<span> </span>


Zigmanuir [339]3 years ago
6 0
- - Solve:


\frac{72}{180} *100=40

- - Final answer" 40%

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8 0
3 years ago
How would you solve these 2 maths problems?
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Answer:

see explanation

Step-by-step explanation:

(9)

Expand and simplify right side and compare coefficients of like terms on left side.

(x - 2)(x² + ax + b) + c

= x³ + ax² + bx - 2x² - 2ax - 2b + c

= x³ + x²(a - 2) + x(b - 2a) - 2b + c

compare with

x³ + 2x² - 3x + 4

x² terms

a - 2 = 2 ( add 2 to both sides )

a = 4

x terms

b - 2a = - 3 ← substitute a = 4

b - 8 = - 3 ( add 8 to both sides )

b = 5

constant terms

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- 10 + c = 4 ( add 10 to both sides )

c = 14

Thus a = 4, b = 5 and c = 14

-------------------------------------------------

(10)

Since both functions cross the x- axis at - 2 then (- 2, 0) satisfies both, that is

f(- 2) = (-2)^{4} + a(- 2)³ + b(- 2)² + 36(- 2) + 144 = 0, that is

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- 8a + 4b + 56 = 0

- 8a + 4b = - 56 → (1)

and

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- 8a - 2b = 112 → (2)

Subtract (1) from (2) term by term

- 6b = 168 ( divide both sides by - 6 )

b = - 28

Substitute b = - 28 into (2)

- 8a + 56 = 112 ( subtract 56 from both sides )

- 8a = 56 ( divide both sides by - 8 )

a = - 7

Thus a = - 7 and b = - 28

5 0
3 years ago
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