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MAVERICK [17]
3 years ago
12

Test each statement below to see if it is reversible. If so, write it as a true biconditional. If not, write not reversible

Mathematics
2 answers:
gavmur [86]3 years ago
4 0

the correct answer for 1. is true

the correct answer for 2. is false

FinnZ [79.3K]3 years ago
3 0
Statement: Complementary angles are two angles with measures that have a sum of 90.
Reverse: Two angles with measures that have a sum of 90 are complementary angles.

Here the reverse is true, therefore, the statement is true biconditional.

Statement: A rectangle is a four-sided figure with at least one right angle.
Reverse: A four sided figure with at least one right angle is a rectangle.

Here, the reverse is not true, therefore, the statement is not reversible.
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Solve 38 x 21 using an area<br> Solve<br> model<br> model.
damaskus [11]

it should be 798

Step-by-step explanation:

just multiply

5 0
3 years ago
Eight times four is how much less than six squared
andreev551 [17]
8 times four is less than 6 squared by 4, because 8*4 = 32 and 6^2 = 36 then 36-32 = 4. 
8 0
4 years ago
Work out the percentage change when a price of £10 is decreased to £8
soldier1979 [14.2K]

Answer:answer is 20%

10-8 =2

2÷10×100

=20℅



Step-by-step explanation:


3 0
3 years ago
Read 2 more answers
In a casino on a Saturday, 90% of the visitors lost $100 each, 9% of the visitors lost $1,000 each, and the rest won $10,000 eac
liq [111]

x = total amount of visitors


so we have 90% that lost $100, 9% that lost $1000, now 90+9 = 99%, what's left is just 1% then, so 1% won $10,000.

Profit is Revenue - Cost.

so the profit for the casino, is not who wins, because from the wins the casino needs to pay that to the winner, so they're losing that much, so for the casino, profits is when a player loses, so their profit will come from the 99% that lost money then.

keeping in mind that

\bf \begin{array}{|c|ll} \cline{1-1} \textit{a\% of b}\\ \cline{1-1} \\ \left( \cfrac{a}{100} \right)\cdot b \\\\ \cline{1-1} \end{array}~\hspace{5em} \begin{array}{llll} \stackrel{\textit{90\% of x}}{\left( \cfrac{90}{100} \right)x}\implies 0.9x\qquad \stackrel{\textit{9\% of x}}{\left( \cfrac{9}{100} \right)x}\implies 0.09x \\\\\\ \stackrel{\textit{1\% of x}}{\left( \cfrac{1}{100} \right)x}\implies 0.01x \end{array}


since we know that 90% lost $100, that means 0.9x(100) is the total amount lost by all of them, since we also know that 9% lost $1000, then 0.09x(1000) is the total amount lost by them, and the wins are of course just 0.01x(100000).


\bf \stackrel{\textit{90\% at \$100}}{0.9x(100)}~~+~~\stackrel{\textit{9\% at \$1000}}{0.09x(1000)}~~-~~\stackrel{\textit{1\% at \$10000}}{0.01x(10000)}~~=~~\stackrel{\textit{casino's profit}}{80000} \\\\\\ 90x+90x-100x=80000\implies 80x=80000\\\\\\ x=\cfrac{80000}{80}\implies x=1000

4 0
4 years ago
Find the sum.<br> 1<br> x2<br> -<br> xy2<br> y
Naddik [55]

\frac{1}{xy^2}+\frac{x^2}{y}

\frac{1}{xy^2}+\frac{x^3y}{xy^2}

\frac{1+x^3y}{xy^2}

5 0
3 years ago
Read 2 more answers
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