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posledela
2 months ago
13

The height of a rocket a given number of seconds after it is released is modeled by h (t) = negative 16 t squared + 32 t + 10. W

hat does t represent? the number of seconds after the rocket is released the initial height of the rocket the initial velocity of the rocket the height of the rocket after t seconds
Mathematics
2 answers:
zzz [12.3K]2 months ago
7 0

Answer: A

Step-by-step explanation:

PIT_PIT [12.4K]2 months ago
4 0

Answer: The variable t stands for the number of seconds since the rocket was launched.

Step-by-step explanation:

Given:

The rocket's height over time is represented by the equation:

h\left ( t\right )=-16t^2+32t+10

Here, the variable t denotes the elapsed seconds after the rocket's release.

The initial velocity can be found by differentiating the height function with respect to time:

h\left ( t\right )

\frac{\mathrm{d}h(t)}{\mathrm{d} t}=-32t+32

Evaluating at t=0:

\frac{\mathrm{d}h(t)}{\mathrm{d} t}=32

Therefore, the rocket's initial velocity is 32 units per second.

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Solve 4x - 5 = 7 + 4y for y
PIT_PIT [12445]

Answer:

y = x - 3

Step-by-step explanation:

4x - 5 = 7 + 4y  subtracting 7 from each side

4x - 12 = 4y

 then dividing every term by 4

x - 3 = y

3 0
1 month ago
Solve x2 - 8x - 9 = 0. Rewrite the equation so that it is of the form x2 + bx = c.
Svet_ta [12734]

Answer:

x=9,-1 and x^2+(-8)x=9

Explanation:

We are given the quadratic equation x^2-8x-9

, which we then compare with the standard form of a quadratic. The general quadratic is identified as ax^2+bx+c=0

. From our given equation, it follows that a=1,b=-8,c=-9

. To calculate the discriminant, we insert these values into the formula D=b^{2}-4ac

D=(-8)^2-4(1)(-9)=100

. Now, to find the value of x

The formula is x=\frac{-b\pm\sqrt{D}}{2a}

. The resulting equation will be obtained by rewriting the original equation through rearranging 9 to the right side and applying negative signs within brackets to convert the expression into the form of

x^2+bx=c

.
4 0
1 month ago
Read 2 more answers
An urn contains 3 red and 7 black balls. Players and withdraw balls from the urn consecutively until a red ball is selected. Fin
Leona [12618]

Correct question:

An urn holds 3 red and 7 black balls. Players A and B take turns withdrawing balls until a red one is chosen. Calculate the probability that A picks the red ball. (A goes first, followed by B, with no replacement of drawn balls).

Answer:

The likelihood that A picks the red ball is 58.33 %

Step-by-step explanation:

A will select the red ball if it is drawn 1st, 3rd, 5th, or 7th.

1st draw: 9C2

3rd draw: 7C2

5th draw: 5C2

7th draw: 3C2

Calculating for all possible scenarios gives us:

9C2 = (9!) / (7!2!) = 36

7C2 = (7!) / (5!2!) = 21

5C2 = (5!) / (3!2!) = 10

3C2 = (3!) / (2!) = 3

Adding these possibilities results in 36 + 21 + 10 + 3 = 70.

The total outcomes for selecting a red ball = 10C3

10C3 = (10!) / (7!3!)

= 120.

The probability that A selects the red ball is determined by dividing the sum of possible events by the overall outcomes.

P( A selects the red ball) = 70 / 120

= 0.5833

= 58.33 %

7 0
1 month ago
A rectangular prism with integer side lengths has a height of $3$. If the surface area of the prism is equal to $52$, then what
lawyer [12517]
The given details include: Height of the rectangular prism, h = 3 units, Surface area of the prism, A = 52 sq units. We need to determine the volume of the prism. The volume of a rectangular prism can be calculated using the formula: l = length and b = breadth. Given that the surface area of the prism, A = lb, we have it equal to 52 sq units. Consequently, the volume is 156 cubic units.
3 0
1 month ago
Tricia is going to write Patterns A , B , and C using the rule add 15. The first number in each pattern is shown below . Use the
Inessa [12570]

Response:

The number 40 can be found in Pattern B. Additionally, following the rule, each sequence will expand.

Detailed breakdown:

Let’s build each sequence. Recall that the guideline is to "add 15" to generate each sequence starting from the provided initial number.

Pattern A.

5+20+35+50+65+80+95+110+125+140+155+170+185+200+215+...

Pattern B.

10+25+40+55+70+85+100+115+130+145+160+175+190+205+...

Pattern C.

15+30+45+60+75+90+115+130+145+160+175+190+205+...

You can see that the number 40 appears in Pattern B. Moreover, per the rule, each pattern will show an increase.

8 0
1 month ago
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