Luisa has 12 playing cards.she place 2 out of every 3 cards face up

Answers

Answer 1

Answer: If you're asking how many are left down - the answer would be 4 cards. If how many are face up, the answer would be 8 cards.

Answer 2

Answer:

Final answer:

Luisa places 8 out of 12 playing cards face up. This is determined by finding the fraction of cards that are face up (2 out of 3) and multiplying this by the total number of cards (12).

Explanation:

The question involves the understanding of fractions and proportions which is a part of Mathematics. Luisa has a total of 12 playing cards. If she places 2 out of every 3 cards face up, it is important to calculate the number of face-up cards. Every 3 cards, 2 are face up. Since 12 cards is equal to 4 groups of 3, multiply that number by 2 (the number of face-up cards in each group). Therefore, Luisa places 8 cards face up.

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Solve the proportion x/5=16/20

Answers

x/5 = 16/20

16/20 can be reduced.

x/5 = 4/5

x = 4

Test yourself 215) if f''(x)=6x+6 and there is a stationary point at (0,3), find the equation of the curve

Answers

Ok, so dy/dx=0 at the point (0,3) that is where x=0 and y=3.

$\int { 6x+6dx } \n \n =\frac { 6{ x }^( 2 ) }{ 2 } +6x+C\n \n =3{ x }^( 2 )+6x+C$

$\n \n \therefore \quad { f }^( ' )\left( x \right) =3{ x }^( 2 )+6x+C$

Now, f'(x)=0 when x=0.

Therefore:

$0=C\n \n \therefore \quad { f }^( ' )\left( x \right) =3{ x }^( 2 )+6x$

Now:

$\int { 3{ x }^( 2 ) } +6xdx\n \n =\frac { 3{ x }^( 3 ) }{ 3 } +\frac { 6x^( 2 ) }{ 2 } +C$

$={ x }^( 3 )+3{ x }^( 2 )+C\n \n \therefore \quad f\left( x \right) ={ x }^( 3 )+3{ x }^( 2 )+C$

But when x=0, y=3, therefore:

$3=C\n \n \therefore \quad f\left( x \right) ={ x }^( 3 )+3{ x }^( 2 )+3$

$f''(x)=6x+6\nf'(x)=\int 6x+6\, dx\nf'(x)=3x^2+6x+C\n\n0=3\cdot0^2+6\cdot0+C\n0=C\nf'(x)=3x^2+6x\n\nf(x)=\int 3x^2+6x\, dx\nf(x)=x^3+3x^2+C\n\n3=0^3+3\cdot0^2+C\n3=C\n\n\boxed{f(x)=x^3+3x^2+3}$

Is three forths bigger than four fifths

Answers

no, 4/5 is bigger than 3/4 because when you find the common denominator between the two 4/5 becomes 16/20 while 3/4 becomes 15/20.

wish it helps

What is perpendicular?

Answers

Answer:at an angle of 90° to a given line, plane, or surface.

Step-by-step explanation:

Given a triangle with c=1.6, B=125 degrees, and C= 9degrees Using the law of sines gives: b=

Answers

the answer would be b=8.378

Whats the best way to do this operation?---------------------------------Phillip charged $400 worth of goods on his credit card. On his first
bill, he was not charged any interest, and he made a payment of $20. He
then charged another $18 worth of goods. On his second bill a month
later, he was charged 2% interest on his entire unpaid balance. How much
interest was Phillip charged on his second bill?

Answers

$400 - $20 = $380 ( The original charge subtract the amount he paid. )
$380 + $18 = $398 (The amount unpaid plus another charge equal total amount unpaid.)
$398 x 0.02 = $7.96 (The amount unpaid multiply the percentage of interest = amount of interest.)

Phillip charged $7.96 interest on his second bill.

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