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sp2606 [1]
3 years ago
13

When using quadratics to model parabolic motion, which value represents the time at which the object falls to the ground? x-inte

rcept y-intercept axis of symmetry vertex
Mathematics
1 answer:
morpeh [17]3 years ago
8 0

Answer:  x-intercept

<u>Step-by-step explanation:</u>

NOTES

1) Parabolic motion is represented by the equation:

   h(t) = -9.8t² + vt + h   (in meters per second²), v is velocity

   or

   h(t) =  -32t² + vt + h   (in feet per second²),  v is velocity

2) The x-axis is time (in seconds) & the y-axis is height (in meters or feet).

Since you want to know what time the object hit the ground, h = 0

Therefore, you are looking for the zero of the equation, which is on the x-axis, thus is the x-intercept.

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Option B is the answer because angle A is greater than C and A
7 0
3 years ago
Help me plz help me
alukav5142 [94]

Answer:

1=3 given

1=2 vertical angles

3=4 vertical angles

2=4 transitive property (?)

Step-by-step explanation:

it's been a while since i've done proofs but i think this is right

4 0
2 years ago
Erica’s parents gave her $500 for her high school graduation. She put the money into a savings account that earned 7.5% annual i
Marat540 [252]

Answer:

$28.84

Step-by-step explanation:

That's for the first one that I found, the two other problems I don't know yet.

6 0
3 years ago
Simplify polynomial
Kay [80]

Answer:

j² - 5j²k - 2

Step-by-step explanation:

3j² - j²k - 6 - 4j²k - 2j² + 4

To simplify this polynomial, we can collect like terms. A term is number(s) or variable(s) that are grouped together by multiplication. <u>Like terms have the same variable and exponent</u>.

We have three groups of like terms:

The j-squares (j²), the j-squared k (j²k) and the constants (no variable).

Remember to include the negatives!

The j-squares are: 3j² ; -2j²

The j-squares k are: - j²k ; - 4j²k

The constants are: - 6 ; 4

Simplify:

3j² - j²k - 6 - 4j²k - 2j² + 4

Rearrange the polynomial by like terms

= (- j²k - 4j²k) +  (3j² - 2j²) + (- 6 + 4)

Add or subtract the like terms

= (-5j²k) + (j²) + (-2)

Remove brackets and rearrange so the negative is not first

= j² + - 5j²k + - 2

Simplify where two signs are together. Adding a negative is subtraction.

= j² - 5j²k - 2                  Simplified

8 0
3 years ago
We need help doing this 3y-9x=24
ANTONII [103]

Solve:

3y - 9x = 24

Let's solve for x.

3y − 9x = 24

Step 1: Add -3y to both sides.

−9x + 3y + −3y = 24 + −3y

−9x = −3y + 24

Step 2: Divide both sides by -9.

−9x / - 9 = -3y + 24 / -9

x = 1 / 3y + -8 / 3

Answer: =======> x = 1 / 3y + -8 / 3



Graph: 3y - 9x = 24 ==========> y = 3x + 8

Interception points of: 3x + 8

x intercepts: ======> ( -8/3, 0 )

y intercepts: =======> ( 0, 8 )


Answer: =======> x = 1 / 3y + -8 / 3




Hope that helps!!!! : )



6 0
3 years ago
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