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Ahat [919]
4 years ago
14

What is the greatest positive three-digit integer that is divisible by 5, 7 and 9?

Mathematics
2 answers:
zhenek [66]4 years ago
7 0

<u>Find LCM:</u>

5 = 5

7 = 7

9 = 3²

LCM = 3² x 5 x 7 = 315

-

<u>Greatest 3-digit number:</u>

Greatest 3-digit number = 999

-

<u>Find greatest 3-digit number divisible by 315:</u>

999 ÷ 315 = 3 remainder 54

Greatest 3-digit number divisible by 315 = 315 x 3 =<u> 945.</u>

-

Answer: 945

Verdich [7]4 years ago
6 0

First, we want to see what the product of the three numbers is:

9 * 7 * 5 = 315

From there, we can find multiples of 315 to get the largest 3- digit number divisible by 9, 7, and 5.

315, 630, 945, 1260...

The largest is 945.

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mylen [45]

Answer:

3

Step-by-step explanation:

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with Function A being y = 9x + 4

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6 0
3 years ago
If y varies directly as x, and y is 48 when x is 6, which expression can be used to find the value of y when x is 2?
sertanlavr [38]

y = ( 48 *2 ) / 6

Step-by-step explanation:

If y varies directly as x they are directly proportional, which means they relate to each other in the same way....

2 : y = 6: 48

what is y if x = 2?

The value of y can be found if you write it a two fracrions

2 : y = 6 : 48

2 / y = 6 / 48

cross multiply the fractions gives

6*y = 48 *2

divide left and right of the = sign by 6 gives the answer:

y = ( 48 *2 ) / 6

(if you solve it you get y = 12 but that was not the question).

Other method:

multiply left and right of the = sign by y

2 * y/y = y *6 / 48

6y / 48 = 2 * 1

multiply left and right of the = sign by 48

6y * 48/48 = ( 48 *2 )

6y = ( 48 *2 )

divide left and right of the = sign by 6

6/6* y = ( 48 *2 )/6

y = ( 48 *2 ) / 6

(if you solve it you get y = 12 but that was not the question).

4 0
3 years ago
What fraction is equivalent to - 3/2
Varvara68 [4.7K]

Answer: -1 1/2

3/2= 1 1/2 just make it a negative

6 0
3 years ago
Solve for X. <br><br> x+3 <br> 4<br> 8
m_a_m_a [10]

Answer:

First find the hypotenuse of the small triangle then use that value as the base of the upper triangle. Evaluate the equation formed with the “x"

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Which mixes number is equivalent to the improper fraction 17/10
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1 7/10 is equivalent to the improper fraction 17/10

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