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ANEK [815]
3 years ago
6

14 is 28% of what number

Mathematics
2 answers:
Sindrei [870]3 years ago
8 0
'is' in mathematics means the equal sign
'of' in mathematics means the multiplication sign
the number can be any variable you chose it to be

14 = \frac{28}{100} \times x

Divide both sides by 28

\frac{1}{2} = \frac{x}{100}

Multiply by 100 on both sides to isolate 'x'

\boxed{\bf{x=50}}

14 is 28% of 200
4vir4ik [10]3 years ago
8 0
14 is 28% of 50.

Change your percentage into a decimal: 28%/100 = 0.28
Now divide it by 14: 14 ÷ 0.28 = 50 <-- our answer.

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A bag contains 28 marbles: 9 black, 14 red, and 5 blue. A marble is drawn from the bag at random.
prohojiy [21]

Answer:

steps

1) 14/28 to convert to a percent you have to first divide the numerator from the demoninator and then  you  multiply by 100 and you get get %50 (you could had known bc 14 is half of 28)

2) 5/28 do the same thing as the first step and get %17.85

-Feel free to ask for more help :)

6 0
3 years ago
determine if the quadratic equation has 2 solutions, one, or 2 imaginary solutions by using the descriminant
Maurinko [17]

Hello from MrBillDoesMath!

Answer:

31a.  2 real roots

31b   2 complex roots

Discussion:

31a.

2x^2 + 3x - 6 = 0

Using standard quadratic notation, the above equation has a  = 2, b = 3 and c = -6. The discriminant is given by b^2 - 4ac, which is

3^2 - 4*2*(-6) = 9 + 48 = 57 > 0, so the quadratic has 2 real roots


31b.

The equation is equivalent to  16x^2 + 10x  +3 = 0. Its discriminant is

10^2 - 4 * (16) * (3) = 100 - 192 = -92 so this equation has two complex roots



Regards,  

MrB


7 0
3 years ago
Find the value of x and y in the diagram below.
vlabodo [156]

Answer:

idk

Step-by-step explanation:somthing somthing

3 0
2 years ago
Read 2 more answers
Q # , 15 combine like terms please
Rudiy27
Hi there!

Combining th' like terms of the expressions.

(7y² - 3y) + (8y² - 8y)

7y² - 3y + 8y² - 8y

(7y² + 8y²) + (-3y - 8y)

15y² - 11y

Hence,
Option [ 1. ] - 15y² - 11y is Correct

~ Hope it helps!

8 0
3 years ago
99 POINTS
Sedbober [7]
I got 7x+4 because you distribute then add the X's and the whole numbers together.

6 0
3 years ago
Read 2 more answers
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