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3 years ago

What does CPCTC mean in Geometry AND when it is used?

1 answer:

6 0

CPCTC?
Corresponding Parts of Congruent Triangles that are congruent

When?
Used when you are trying to prove that 2 triangles, sides, or angles are the same.

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Is 65.4279 irrational or rational? Explain

Pachacha [2.7K]

It’s a rational number!

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2 years ago

Sapphire and Trinity are shopping for school clothes. Sapphire has $50 and a coupon for a $10 discount at a boutique where each

Minchanka [31]

Answer:

susan's: 10/3

Bonnie's:5

Step-by-step explanation:

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3 years ago

Marion bought 14 packages of plastic frog and lizard fishing lures. She bought frog lures in packages of 4 and lizard lures in p

tatuchka [14]

Answer:

Marion bought 6 frog lures and 8 lizard fishing lures.

Step-by-step explanation:

Let $f$ represent frog lures and $l$ represent lizard lures.

The total packages Marion bought is

$f+l=14...eqn1$

If she bought frog lures in packages of 4 and lizard lures in packages of 6 for a total of 72 lures, then

$4f+6l=72...eqn2$

We make $f$ the subject in equation 1 and put it into equation 2 to get;

$f=14-l...eqn3$

We put equation 3 into equation 2 to get;

$4(14-l)+6l=72$

$\Righttarrow 2(14-l)+3l=36$

We expand the bracket to get;

$28-2l+3l=36$

$-2l+3l=36-28$

$l=8$

We put $l=8$ into equation 3 to get;

$f=14-8$

$f=6$

Therefore Marion bought 6 frog lures and 8 lizard fishing lures.

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3 years ago

Tell me how do you find out how many Calendar days are in 7 standard years

larisa86 [58]

2556.6975 days

Your answer would be

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3 years ago

Geoffrey is evaluating the expression (-3)^6(2^6)/(-3)^5(2^2) as shown below.

Alekssandra [29.7K]

Answer:

48.

Step-by-step explanation:

First you multiply the number by itself as many times as the number of the exponent is. In this case you multiply -3 to itself 6 times which makes -729, 2 to the 6th power is 64, -3 to the 5th power is -243, and 2 to the 2nd power is 4. Then you multiply -729 by 64 which makes -46656 and multiply -243 by 4 which makes -972, and then divide -972 from -46656 which makes 48.

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3 years ago