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liq [111]
3 years ago
11

Picture is shown abovesuppose that y varies directly with x, and y=12 when x=15​

Mathematics
2 answers:
Alenkasestr [34]3 years ago
8 0

Answer:

y is directly proportional to x

<u>y=kx</u>, where k is a constant

Now, y=12 when x=15

12 = k \times 15 \\ k =  \frac{12}{15}  \\  \boxed{k = 0.8}

When x=2,

y = 0.8 \times 2 \\  \boxed{y = 1.6}

<h3><em><u>Equation: y=</u></em><em><u>kx</u></em></h3><h3><em><u> y: 1.6</u></em></h3>
a_sh-v [17]3 years ago
7 0

Step-by-step explanation:

Since y is directly proportional to x,

we have y = kx, where k is a real constant.

When x = 15, y = 12.

=> (12) = k(15), k = 0.8.

Therefore we have y = 0.8x.

When x = 2, y = 0.8(2) = 1.6.

The answer is y = 1.6 when x = 2.

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c) We can write the equation, by substituting into the formula:
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3 0
3 years ago
AB = 8 and AD = 5. What is BC?
valkas [14]
Is there a picture?
6 0
3 years ago
Write a quadratic function with zeros -3 and 6.<br> Answer is in standard form.
Sergeu [11.5K]
1. Write the factors
(x+3)(x-6) = 0

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7 0
3 years ago
Five times a certain number plus 5 is 45​
ruslelena [56]

Answer:

8

Step-by-step explanation:

8x5=40 + 5 = 45

That's the answer

8 0
3 years ago
Please help me solve this!!
lyudmila [28]

Answer:

x=\sqrt{-2},or,x=\sqrt{2}i

Step-by-step explanation:

  • -3x^2+11=17\\-3^2+11-(11)=17-(11)\\-3x^2=6\\x^2=-2\\x=\sqrt{-2} I don't know what level math you're taking but in lower level math this would be undefined, can't be simplified. But some higher levels simplify it with imaginary or complex number representations. So take your pick, but it's still undefined
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5 0
3 years ago
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