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Natalija [7]
3 years ago
8

If y varies directly as x, and y = 64 when x = 8. Find y when x = 12

Mathematics
1 answer:
svetoff [14.1K]3 years ago
7 0
Use the proportion 8/64 = 12/y. Cross multiply to get 8y = 768. Divide both sides by 8 to get y=96
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WILL GIVE BRAINLIEST <br><br> 5 = h/3 - 17 <br> h = ?<br> (h/3 is a fraction)
Nat2105 [25]

Answer:

h = 66

Step-by-step explanation:

We are given the equation of one variable h and we have to solve the equation for h.

The equation is given by 5 = \frac{h}{3} - 17

⇒ 5 + 17 = \frac{h}{3} {Adding 17 to both sides}

⇒ 22 = \frac{h}{3}

⇒ h = 22 × 3 {Since we know that if \frac{a}{b} = c then we can write a = bc}

⇒ h = 66 (Answer)

7 0
3 years ago
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Does anyone understand this
melomori [17]
I hope this helps you

7 0
3 years ago
Solve the simultaneous equation <br> 2x - 5y = 9<br> 3x + 4y = 2
lianna [129]

Answer:

x = 2, y = -1.

Step-by-step explanation:

2x - 5y = 9

3x + 4y = 2

Multiply first equation by -3 and the second by 2:

-6x + 15y = -27

6x + 8y = 4            Adding the 2 equations:

23y = -23

y = -1.

Now substitute this value for y in the first equation:

2x - 5(-1) = 9

2x = 9 +5(-1)

2x = 9 - 5

2x = 4

x = 2.

8 0
2 years ago
Write a multiplicatoion expression that shows 10 to the 5th power
LUCKY_DIMON [66]

10x10x10x10x10

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6 0
3 years ago
Evaluate 15/r-1 when r=5
DochEvi [55]

Answer: 15/5=3 3-1= 2

The answer would be 2. :P



6 0
3 years ago
Read 2 more answers
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