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3 years ago

Where do you get .28 from ?

Mathematics

2 answers:

myrzilka [38]3 years ago

7 0

Answer:

Percentage.
Fraction.

Step-by-step explanation:

0.28 is like a percentage.

If so, then you can use 2 examples:

0.28 * 32.
28% of 32.

The most simple way of getting it is fractions.

2 examples:

28/100
28/100 * 32.

nalin [4]3 years ago

4 0

Do you mea. In decimal form?

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Which is it? please help me and i will give brainliest

Cerrena [4.2K]

Answer: A, 1/2

Step-by-step explanation:

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3 0

3 years ago

Read 2 more answers

Solve for x. 9(x - 2) = 18 o x=0 X = 16/9 x = 20/9

iragen [17]

Answer:

x = 4

Step-by-step explanation:

9(x - 2) = 18

9x - 18 = 18

9x = 18 + 18

9x = 36

x = 36/9

x = 4

5 0

3 years ago

Read 2 more answers

Please help quickly!

steposvetlana [31]

Answer:

The Correct option is A) 8

The value of a is 8.

Step-by-step explanation:

Vertical Angles:

The angles opposite each other when two lines cross.

They are always equal.

∠ 2(3a-7)° and ∠ (5a-6)° are vertical angles.Hence are equal.

So on Substituting we get

$2(3a-7)\°=(5a-6)\°$

Applying distributive property we get

$2\times 3a-2\times 7=5a-6\\6a-14=5a-6\\6a-5a=14-6\\\\\therefore a=8$

The value of a is 8

The Correct option is A) 8

7 0

3 years ago

Y is directly proportional to square root of x If y=56 when x=49 find, y when x=81

STALIN [3.7K]

$\qquad \qquad \textit{direct proportional variation} \\\\ \textit{\underline{y} varies directly with \underline{x}}\qquad \qquad \stackrel{\textit{constant of variation}}{y=\stackrel{\downarrow }{k}x~\hfill } \\\\ \textit{\underline{x} varies directly with }\underline{z^5}\qquad \qquad \stackrel{\textit{constant of variation}}{x=\stackrel{\downarrow }{k}z^5~\hfill } \\\\[-0.35em] \rule{34em}{0.25pt}$

$\stackrel{\begin{array}{llll} \textit{"y" directly}\\ \textit{proportional to }\sqrt{x} \end{array}}{y = k\sqrt{x}}\qquad \textit{we know that} \begin{cases} y = 56\\ x = 49 \end{cases}\implies 56=k\sqrt{49} \\\\\\ 56=7k\implies \cfrac{56}{7}=k\implies 8=k~\hfill \boxed{y=8\sqrt{x}} \\\\\\ \textit{when x = 81, what is "y"?}\hfill y=8\sqrt{81}\implies y=8(9)\implies y=72$

7 0

2 years ago

Simplify: 5(8r) + 3(4r)

Lady_Fox [76]

5 * 8r = 40r
3 * 4r = 12r
40r + 12r = 52r
Solution: 52r

4 0

3 years ago