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Alex Ar [27]
2 years ago
5

What percent of 180 is 45? A. 4.5% B. 18% C. 22% D. 25%

Mathematics
2 answers:
vichka [17]2 years ago
8 0

Hi there! :)

<u>Answer:</u>

The answer is D. 25% of 180 is 45.


Step-by-step explanation:

Let's replace "what percent" with the letter "x" because it's what we are looking for.

The word "of" is the same thing as a multiplication sign, which means that the sentence "What percent of 180 is 45?" can turn into "x times 180 is 45".

The word "is" is the same thing as an equation sign, wich means that you can write this as an equation:

<u>x × 180</u> = 45

180x = 45


Now all you have to do is solve this equation by isolating "x" to find your answer:

<u>180</u>x = 45

Divide each side of the equation by 180 → 45 ÷ 180 = 0.25

x = 0.25

0.25 = 25 ÷ 100 = <u>25%</u>


There you go! I really hope this helped, if there's anything just let me know! :)

Ber [7]2 years ago
6 0

Answer:

D. 25%

Step-by-step explanation:

45/180=0.25

0.25 into a percent is 25%

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Simplify (3x+2)(x-7)
vovangra [49]
The answer is
3 {x}^{2}  - 19x - 14
first you must multiply or use the FOIL method (First, Outer, Inner, Last)
First you multiply the first terms
(3x)(x)
this gives you 3x^2, then you multiple the outer terms
( - 7)(3x)
this gives you -21x, then you multiply the inner terms
(2)(x)
that gives you 2x, finally you multiply the last terms
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that gives you 14, now you combine like terms
- 21x + 2x =  - 19x
now you put all the terms together and end up with your solution
3 {x}^{2}  - 19x - 14

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3 years ago
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Quadratic functions whose zeros are -2 and -9
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Answer: f(x)=x^{2} +11x+18

Step-by-step explanation:

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Dylan runs 4 laps around a track in 16 minutes.
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A. 4 minutes per lap
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Find the area of the figure. A) 114 cm2 B) 350 cm2 C) 418 cm2 Eliminate D) 447 cm2
ANEK [815]

Answer:

418cm2

Step-by-step explanation:

Separate the figure into a square and a triangle. Find the area of each and add.

s2 = area of square

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5 0
3 years ago
Triangle DEF with vertices D(2, 6), E(5, 6)and F(5, 1). Write the coordinates of triangle D’E’F’ after a
Yakvenalex [24]

Answer:

The coordinates of triangle after reflection over y-axis

 D¹( -2 ,6) , E¹( -5 ,6) , F¹ (-5,1)

Step-by-step explanation:

<u><em>Explanation:-</em></u>

Given that DEF with vertices D(2,6), E(5,6), and F(5,1)

Given that the triangle DEF reflection over the 'y' - axis then  transformed into

( x,y) → (-x,y)

Now,

D(2,6) → D¹( -2 ,6)

E(5,6)→ E¹( -5 ,6)

F(5,1)→ F¹ (-5,1)

<u><em>Final answer:-</em></u>

The coordinates of triangle after reflection over y-axis

 D¹( -2 ,6) , E¹( -5 ,6) , F¹ (-5,1)

8 0
2 years ago
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