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saw5 [17]
3 years ago
10

Kai wrote the number 85 on the board. Is 85 prime or composite?

Mathematics
1 answer:
IceJOKER [234]3 years ago
4 0
Kai wrote a composite number because that number is 85.<span />
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How can we tell if a number is divisible by 4
Elza [17]

Answer: You take the last two digits of the original number and see if they are divisible by 4.

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7 0
3 years ago
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X-3y-7=0 , 3x-3y-15=0 solve this using cross multiplication​
rewona [7]

Answer:

x = 4 , y = -1

Step-by-step explanation:

x - 3y = 7 -- (1)

3x - 3y = 15 -- (2)

Rewriting (1), x = 3y + 7 -- (1)'

Substituting (1)' into (2),

3 ( 3y + 7 ) - 3y = 15

9y + 21 - 3y = 15

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According to (3) and (4),

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8 0
3 years ago
Given a right prism where p is the perimeter of the base, h is the height, BA is the area of the bases, and LA is the lateral ar
Ymorist [56]
Let
<span>p ----------------> is the perimeter of the base
</span><span>h ---------------> is the height
</span><span>BA------------->  is the area of the bases
</span><span>LA--------------> is the lateral area

we know that surface area is </span><span>the sum of base areas plus lateral areas 
</span><span>then
SA=[BA]+P*h
but remember that
LA=P*h
then
SA=</span>[BA]+LA----------> SA=BA+LA

the answer are the options B.) SA=BA+LA and the option D.) SA=BA+ph
7 0
3 years ago
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BARSIC [14]

Answer:

B

Step-by-step explanation:

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6 0
3 years ago
Refer to your Expeditions in Reading book for a complete version of this text.
ahrayia [7]

Answer:

The 3rd one, The 1st one and The last one.

Step-by-step explanation:

6 0
2 years ago
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