Dr. Washington makes 87 greeting cards to sell at the Fall Dance. She sells the cards in packs of

Mathematics

1 answer:

Andrej [43]1 year ago

4 0

9514 1404 393

Answer:

Step-by-step explanation:

The number of packets of 10 will be the same as the tens digit in the number 87: 8.

Dr. Washington can make 8 full packets of cards.

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99. What is the greatest prime factor of 5,355? A. 17 B. 51 C. 119 D. 131 E. 153

NemiM [27]

Hello,

5355 is divisble by 3 since 5+3+5+5=18 is divisible by 3
5355=3*1785
1785 is divisble by 3 since 1+7+8+5=21 is divisible by 3
1785=3*595
595 is not divisible by 3 but by 5
595=5*119
119 is divisible by 7 since 1*2+1*3+9*1=14 is divisible by 7.
119=7*17

17 is prime
Answer A

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Rina8888 [55]

Answer:

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liraira [26]

X+y= 213
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2 years ago

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RS=3y+5, ST=2y+9, RT=54. what is the value of y?

Vesna [10]

Answer:

Step-by-step explanation:

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2 years ago

Log10 (x - 9) + log10 x = 1

Delicious77 [7]

Answer:

$\boxed{ \: \boxed{ x = 10} \: is \: applicable}$

Step-by-step explanation:

$if \: the \: question \: is \to \\ \boxed{log_{10}(x - 9) + log_{10}(x)= 1} \\ then \: the \: value \: of \: \boxed{ x }\: can \: be \: gotten \: by \to\\ log_{10} \{ x( x - 9)\} = 1 \\ log_{10}( {x}^{2} - 9x) = 1 \\ {10}^{1} = {x}^{2} - 9x \\ {x}^{2} - 9x = 10 \\ {x}^{2} - 9x - 10 = 0 \\ {x}^{2} + x - 10x - 10 = 0 \\ x( x + 1) - 10(x + 1) = 0 \\ (x + 1)(x - 10) = 0 \\ \boxed{\boxed{ x + 1 = 0 }\: or \: \boxed{ x - 10 = 0}} \\ \boxed{\boxed{ x = - 1 }\: or \: \boxed{ x = 10}}$

♨Rage♨

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2 years ago