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Readme [11.4K]
3 years ago
8

Twenty-one is 25% of what number?

Mathematics
2 answers:
choli [55]3 years ago
8 0

The answer is 84

Because 1/4 (25/100) of 84 would be 21

I hope this helps!!! :)

ivolga24 [154]3 years ago
5 0
The answer is 84 because 21 times 4 is 84 my answer is late someone answer it already lol
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Find the value of x and simplify completely.
jok3333 [9.3K]

Answer:

<h2>x=9√10</h2>

Given: A right triangle in which an altitude is drawn from the right angle vertex to the hypotenuse.

To find: 'x' the larger leg of triangle

Solution,

Using let rule for similarity in right triangle:

\frac{leg}{part}  =  \frac{hypotenuse}{leg}  \\ or \:  \frac{x}{27}  =  \frac{3 + 27}{x}  \\ or \: x \times x = 27(3 + 27) \\ or \: x \times x = 81 + 729 \\ or \:  {x}^{2}  = 810 \\ or \:  {x}^{2}  = 81 \times 10 \\ or \:  {x}  =  \sqrt{81 \times 10}  \\ or \: x =  \sqrt{81}  \times  \sqrt{10}  \\ or \: x =  \sqrt{ {(9)}^{2} }  \times  \sqrt{10}  \\  \: x = 9 \sqrt{10}

Hope this helps...

Good luck on your assignment..

7 0
3 years ago
How do you solve 3x^6- 39x^4+ 108x^2= 0
ArbitrLikvidat [17]
You can first take out an x^2 from each number , 3x^6 - 39x^4 + 108x^2 = x^2 ( 3x^4 - 39x^2 + 108) Then just factor and solve for the zero's of the equation
6 0
3 years ago
What is the degree of the polynomial 9 + 4z?<br> O 4<br> O 2<br> O 9<br> O 1
damaskus [11]

Answer:

1

Step-by-step explanation:

There are no written exponents, meaning the highest power is the first power

5 0
2 years ago
Write an inverse variation equation that relates x and y. With x being 10 and y being 2
yulyashka [42]

Answer:x=20/y

Step-by-step explanation:

x α 1/y

removing the constant of proportionality sign α and replace it with =k

x = k/y

x=10 y=2

10 = k/2

Cross multiply

10x2=k

20=k

k=20

Substitute k=20 in x=k/y

x=20/y.........required equation

7 0
3 years ago
Does the figure have rotational symmetry? If it does l, find the angle of rotation.
gulaghasi [49]
Yes choice A. I believe 30˚

5 0
3 years ago
Read 2 more answers
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