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stellarik [79]
2 years ago
10

Which is a quadratic function? A y = X-9 B y = x² +9 C y = x + 2x -9

Mathematics
2 answers:
Mekhanik [1.2K]2 years ago
4 0

Answer:

B y = x² +9

Step-by-step explanation:

A quadratic function must have the highest power of x being x^2 and must have an x^2 term

A y = X-9  - linear

B y = x² +9 quadratic

C y = x + 2x -9 - linear

irina1246 [14]2 years ago
4 0
The answer is b !!!!!
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A right triangle has a 30o angle. the leg adjacent to the 30o angle measures 25 inches. what is the length of the other leg
adelina 88 [10]
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2 years ago
So sorry for asking for so much help but I seriously don't understand what to do for this assignment
astraxan [27]

Answer:

I'll probably come back and do this later.

Step-by-step explanation:

<u>How to Round:</u>

If the number following the number you're going to round up is 5 or above, (5, 6, 7, 8, or 9), then round up. (E.X. 2<u>9</u> rounded up is 30. Since 9 is above 5, you will round up.

On the other hand, if the number following the number you're going to round is 4 or below, (4, 3, 2, or 1), you don't round up, instead you keep it the same, and if they're are decimals, you turn the following numbers to 0s. (E.X. 32.4536 rounded to the nearest hundredth (32.45<u>3</u>6) is 32.45. Since 3 is less than 4, you're not going to round up. The number in the hundredth's place stays the same (5), and the following rest turn to 0s. Leaving you with 32.45

Let me know if this helped. :)

6 0
2 years ago
Read 2 more answers
Find the length of the short leg of a 30-60-90 triangle if the long leg is 3cm
antoniya [11.8K]

Answer:

Short leg = √3 cm

Step-by-step explanation:

the opposite angle of long leg is 60°

hypotenuse : x

sin 60° = 3/x = √3 / 2

x = (3 x 2) / √3 = 2√3

short leg length (s)

Cos 60° = 1/2 = s / x = s / 2√3

s = √3

7 0
3 years ago
Find the standard deviation of 36,18,12,10 and 9
babunello [35]
The standard deviation of 36,18,12,10 and 9 is 10

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