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2 years ago

C is the midpoint of AD. B is the midpoint of AC. BC= 12. What is the length of AD?

Mathematics

1 answer:

Salsk061 [2.6K]2 years ago

6 0

Answer:

Step-by-step explanation:

. .

=12 = ,

12+12=24 =24 = ,

24+24= 48

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The price of an item decreased by 20% to $200. Then later the price decreased again from $200 to $150. What is the percent of de

cricket20 [7]

Answer:

40%

Step-by-step explanation:

ok so first find the og price:

100% - 20% = 80%

so 80% = 200

let the 100% be x:

x * 0.8 = 200

x= 250

100% = 250

(difference/ og price) * 100% = the percentage decrease/ increase

(250-150/250)* 100% = 40%

((the final price/ og price) * 100%) - 100%

((150/250)*100%) - 100% = 40%

There was a 40% decrease from the og price to the final price of 150.

3 0

3 years ago

Determine whether each of these sets is nite, countably in nite, or uncount- able. For those that are countably in nite, exhibit

ira [324]

Answer:

Integers that are divisible by 7 are countably infinite

The set are {7, 14, 21, 28, 35, 42, 49,......

Integers that are divisible by 10 are countably infinite

The set are {10, 20, 30, 40, 50, 60, 70,........

Also for the negative integers divisible by 7 or 10{.......,-49, -42, -35, -28, -21, -14, -7} or {........,-70, -60, -50, -40, -30, -20, -10} are countably infinite

Step-by-step explanation:

See the set of integers divisible by 7 or 10,

{7, 14, 21, 28, 35, 42, 49,........} Or

{10, 20, 30, 40, 50, 60, 70,.......}

Can be map one-to-one to {1,2,3,4,5,6,7,...... The set of natural numbers or positive Integers.

So also, it is applicable in negative integers divisible by 7 or 10.

Therefore, they are countably infinite

A set is uncountable if it contains so many elements that they cannot be put in one-to-one correspondence with the set of natural numbers(Positive Integers). In other words, there is no way that one can count off all elements in the set in such a way that, even though the counting will take forever, you will get to any particular element in a finite amount of time.

WHILE

A set is countable or countably finite if it contains so many elements that they CAN be put in one-to-one correspondence with the set of natural numbers(Positive Integers)

3 0

3 years ago

A takeaway sells 10-inch pizzas and 12-inch pizzas.

N76 [4]

Answer:

532.52

Step-by-step explanation:

P 2(10-inch pizza)=407*3.72-358*0.49=1514.04-175.42=1339.62

P2(12-inch pizza)=169*5.26-142*0.04=888.94-5.68=883.26

P=1339.62+883.26=2222.88

2222.88-1690.36=532.52

5 0

3 years ago

If 3/2 divided by 1/4 =n , then n is between

kari74 [83]

OK, this written in numbers is

$\frac{3/2}{1/4} =n$

But, fractions can not divide. So we need to multiply one by the reciprocal of the other. The reciprocal of a fraction is itself flipped upside down. For example, the reciprocal of 1/2 would be 2/1.

So, we will multiply 3/2 by 4/1. We know how to do this, it is simply 3/2*4=12/2=6.

So, the answer is n = 6. That would be answer c, because 6 is between 5 and 7.

3 0

4 years ago

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one gallon of paint covers about 450 square feet. how many square feet will 1.5 gallons of paint cover?

Klio2033 [76]

Multiply 450 by 1.5 to get your answer. 675

6 0

3 years ago

Read 2 more answers