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4 years ago

6

53 out of 100 erasers are blue. What percent of the erasers are blue?

2 answers:

Lilit [14]4 years ago

7 0

53/100 erasers are blue

53/100 = 0.53

0.53 = 53%

53% is your answer

hope this helps

kirza4 [7]4 years ago

4 0

53% is the final answer. :)

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Given A = {a, e, i, o, u} and B = {a, l, g, e, b, r}, find A ∪ B.

kupik [55]

$A \cup B$ indicates you want the UNION of sets A and B. So just make a list of elements that are in either set ("put all the elements into one 'box'"). Elements are listed only once; example: a is in both sets, so put it in the union only once.

Answer: the 3rd choice, {a, b, e, g, i, l, o, r, u}

6 0

3 years ago

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6,000 dollars is invested in two different accounts earning 3% and 5% interest. At the end of one year, the two accounts earned

kap26 [50]

Answer:

$2000

Step-by-step explanation:

6,000 dollars is invested in two different accounts earning 3% and 5% interest.

Let x be the amount invested in account earning 3% interest

So, 6000-x is the amount invested in account earning 5% interest

$S.I. =\frac{P\times R\times T}{100}$

So, Simple interest for account earning 3% interest

$S.I. =\frac{x \times 3 \times 1}{100}$

$S.I. =0.03x$

Simple interest for account earning 5% interest

$S.I. =\frac{(6000-x) \times 5 \times 1}{100}$

$S.I. =0.05(6000-x)$

$S.I. =300-0.05x$

Since we are given that the two accounts earned $220 in interest

So, $0.03x+300-0.05x=220$

$−0.02x+300=220$

$80=0.02x$

$\frac{80}{0.02}=x$

$4000=x$

So, 4000 was invested at 3%

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8 0

4 years ago

jeyben [28]

Answer:

c

Step-by-step explanation:

5 0

3 years ago

Find the solution set for this equation:<br> -a2+4a=0<br> (Separate the two values with a comma)

Rashid [163]

$\quad \huge \quad \quad \boxed{ \tt \:Answer }$

$\qquad \tt \rightarrow \: \{ 0,4 \}$

____________________________________

$\large \tt Solution \: :$

$\qquad \tt \rightarrow \: - {a}^{2} + 4a = 0$

$\qquad \tt \rightarrow \: - ( {a}^{2} - 4a) = 0$

$\qquad \tt \rightarrow \: {a}^{2} - 4a = 0$

$\qquad \tt \rightarrow \:a(a - 4) = 0$

The two cases are :

a = 0

or

a -4 = 0, that leads to a = 4

We can conclude :

$\qquad \tt \rightarrow \:solution \: (a) = \{ 0,4\}$

Answered by : ❝ AǫᴜᴀWɪᴢ ❞

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2 years ago

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jeka57 [31]

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