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meriva
3 years ago
15

Please solve this 15 points

Mathematics
1 answer:
Tom [10]3 years ago
7 0

Answer:

Yes, it is proportional.

You know because if you do $9/3 lbs that = 9/3 = $3 per pound

and

if you do $1.50/0.5 lbs = 1.5/0.5 = $3 per pound

Both of them are $3 per pound, so it is proportional.

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3 to the square root of 7 - 5 to the square root of 7
OLga [1]

Answer:

Step-by-step explanation:

(3 to the square root (7)) - (5 to the square root (7))

we get

52.38

hope this helps you

6 0
3 years ago
A coordinate axis is drawn with a parabola pointing up that has vertex of 0,3. Determine the intervals on which the function is
mel-nik [20]

Answer:

Option (2). Increasing x > 0; decreasing x < 0

Step-by-step explanation:

Equation of the parabola having vertex (0, 3) will be,

y = (x - 0)² + 3

y = x² + 3

To check the function is increasing or decreasing in the given intervals we will find the derivative of the function,

\frac{dy}{dx}=\frac{d}{dx}(x^{2}+3)

y' = 2x

For x < 0 Or x = -1

y' = 2(-1)

  = -2 < 0

Therefore, function is decreasing in x < 0

For x > 0 Or x = 1

y' = 2(1) + 3

  = 5 > 0

Therefore, function is increasing in x > 0

Option (2) is the answer.

8 0
3 years ago
6x to the power of 2 + 7x to the power of 3 + 8x to the power of 5 + 9
Paha777 [63]

Answer:

I couldn't understand question paper plz can u give question with photo too.

4 0
3 years ago
Select all expressions that are equivalent to 2+y+y+y+y+y+3?
ryzh [129]
I can’t see your choices, but this equation can be simplified to 5y + 5.

If you add the choices as a comment, I’m happy to help more.
7 0
3 years ago
Somebody... PLEASE help<br><br> What is the only solution of 2x2 + 8x = x2 – 16?
makvit [3.9K]

Answer:

x= - 4

Step-by-step explanation:

2 * x^2 + 8 * x = x^2 - 16

2 * x^2 - x^2 + 8 * x + 16 = 0

x^2 + 8 * x + 16 = 0

(x + 4) * (x + 4) = 0

x = - 4

7 0
2 years ago
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