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Brilliant_brown [7]
3 years ago
13

Two numbers are of the ratio 3:5. If their difference is 18, find the numbers.​

Mathematics
1 answer:
Sergio039 [100]3 years ago
4 0

x \div y = 3 \div 5  \\ it \: means  =  \\ 3y = 5x \\ x - y = 18 \\

To solve we multiply the last equation by 5 and we get the following:

5x-5y=90

But 5x=3y and we replace it in this equation:

3y-5y=90

-2y=90

y=-45

and x-(-45)=18 , x+45=18

x=-27

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Find the quotient. 5/6 divided by 1/6
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Answer:

5

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30 ÷ 6

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=  5

the awnser would be 5

Step-by-step explanation:

6 0
3 years ago
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A jar contains 8 marbles numbered 1 through 8. an experiment consists of randomly selecting a marble from the jar, observing the
zepelin [54]
There are 8 possible outcomes for a marble being drawn and numbered. 
{1,2,3,4,5,6,7,8}
There are 4 possible outcomes for a card being selected from a standard deck.
{ <span>hearts, diamonds, clubs, spades}
So the number of outcomes in the sample space would be 8 x 4 = 32.

In the event "an even number is drawn", there are only 4 possible outcomes for a marble being drawn, {2,4,6,8}, whereas there are still 4 possible outcomes for a suit. So the number of outcomes in the event is 4 x 4 = 16.

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3 0
3 years ago
75% of blank peaches is 15 peaches
Sav [38]
0.75x=15
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x=20
7 0
3 years ago
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60% of 10 help me ///////////
balu736 [363]
So 60% = 3/5 
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6 0
4 years ago
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In ΔBCD, \overline{BD} BD is extended through point D to point E, m∠CDE = (6x-13)^{\circ}(6x−13) ∘ , m∠BCD = (2x+10)^{\circ}(2x+
AveGali [126]

Answer:

  m∠CDE = 35°

Step-by-step explanation:

The exterior angle CDE is equal to the sum of the opposite interior angles, BCD and DBC. So, you have ...

  6x -13 = (2x+10) +(x +1)

  3x -24 = 0 . . . . . . . . . . . . subtract the right side, simplify

  x -8 = 0 . . . . . . . . . . . . . . divide by 3

  x = 8 . . . . . . . . . . . . . . . . . add 8

  6x -13 = 6·8 -13 = 35 . . . . substitute for x in the expression for CDE

The measure of angle CDE is 35°.

7 0
3 years ago
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