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Keith_Richards [23]
3 years ago
5

The variables Y and X have a proportional relationship, and y=12 when x=5. What is value of y when x =8? Enter your answer in th

e box.
y=_____

Mathematics
2 answers:
kkurt [141]3 years ago
4 0

Answer:

y=19.2

Step-by-step explanation:

Here as y is proportional to x

so

y=kx

When y = 12 , x = 5

We have

12 = 5k

k=\frac{12}{5}=2.4

So now we have

y=2.4x

When x = 8

y = 2.4(8)

y = 19.2

Dimas [21]3 years ago
4 0

Answer:

19.2

Step-by-step explanation:

X=12/5

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A pack of 13 candles is priced at $78. At that rate, how much would only 10 candles cost?
Sphinxa [80]

Answer:

78/13 = 6 (is the price of one candle)

6(price) x 10(candles) =60 is the answer

Hope it helped

8 0
3 years ago
Thulani goes to the library every 7 days. He goes to the market every 4 days
emmasim [6.3K]

Thulani goes to both the library and the market for 5 more times during the year.

Step-by-step explanation:

Thulani goes to the library every 7 days. He goes to the market every 4 days.

We have to calculate the Least Common Multiple (LCM) to analyze the next common day on which he will go to both places.

The factors of 7 are:  1 x 7

The factors of 4 are: 2 x 2

Therefore, the LCM would be = 1 x 7 x 2 x 2

LCM = 28

LCM indicates that Thulani will go to both places on every 28th day.

To calculate the number of times (n) he will go to both places on same day. We can use the formula mentioned below:'

n = \frac{Number of days}{frequency}

Here frequency represents the LCM = 28.

The number of days are:

August: 30 (we are excluding 1st August)

September: 30

October: 31

November: 30

December: 31

Total  = 152

By putting the values in formula, we get

n = \frac{152}{28}

n = 5.42

As, the number of times can only be a whole number. Therefore, Thulani goes to both the library and the market for 5 more times during the year.

Learn more:

The following links have more information

brainly.com/question/12419898

brainly.com/question/12764620

Keywords: LCM, same day

#learnwithBrainly

7 0
3 years ago
Rewrite the equation in Ax+By=C form.<br> Use integers for A, B, and C.<br> y-3=6(x-5)
Mama L [17]

Answer:

y-6x=-27

Step-by-step explanation:

simplify with distributive property

y-3=6x-30

add 3 to both sides

y=6x-27

take away 6x from both sides

y-6x=-27

P.S. please give brainliest

7 0
2 years ago
Please help me with 9
sladkih [1.3K]

Answer:

Fourth choice, 1/6

Step-by-step explanation:

15 + 8 + 10 + 12 + 15 = 60

Out of 60 cards, 10 of them is the go again card, so it's 10/60 which simplified is 1/6

3 0
3 years ago
Amanda bought 4 shirts and 9 skirts for $168.75. On another day she bought 3 shirts and 12 skirts for $172.50. How much did she
Karolina [17]

Answer:shirt = $22.5

skirt= $8.75

Step-by-step explanation:

Let shirt be x and skirt be y

4x + 9y = 168.75--------1

3x + 12y = 172.5---------2

Using elimination method

Multiply eqn 1 by 3 and eqn 2 by 4

12x + 27y= 506.25

12x + 48y = 690

Subtracting

-21y = -183.75

y = $8.75

Put in eqn 1

4x + 9×8.75 = 168.75

4x = 168.75 - 78.75

4x = 90

x = $22.5

3 0
3 years ago
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