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sergiy2304 [10]
2 years ago
12

A rocket is launched into the air. The projectile motion of the rocket can be modeled using h(t) = 112t –16t2, where t is the ti

me since launch in seconds and h(t) is the height of the rocket at time t. When will the rocket be 196 feet in the air? after 2. 0 seconds after 3. 5 seconds after 4. 5 seconds after 7. 0 seconds.
Mathematics
1 answer:
asambeis [7]2 years ago
5 0

Answer:

3.5 seconds.

Step-by-step explanation:

because i just took the test.

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113, 183, 479, 120, 117 What is the mean, median and mode? Make sure to label each answer. Round any decimals to the tenths plac
slava [35]
Median is in the middle witch would be 479 and mode is 113
3 0
3 years ago
Ava has a credit card that gets her a 5% discount on every purchase and free shipping when used online. The annual percentage ra
8_murik_8 [283]

Answer:

1:$10

2:$13.06

Step-by-step explanation:

5 0
3 years ago
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[3]<br>(b)<br>Calculate the values of c for which 2x2 – 3x + c&gt;-2 for all values of x.​
hoa [83]

Answer:

  c > -7/8

Step-by-step explanation:

Add 2 for an inequality that compares to zero:

  2x^2 -3x +(c+2) > 0

This will be true when the discriminant is negative. For the quadratic ...

  ax^2 +bx +c

the discriminant is ...

  b^ -4ac

We want this to be negative:

  (-3)^2 -4(2)(c+2) < 0

  9 -8(c +2) < 0

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  -7 < 8c

  -7/8 < c

The given inequality will be true for all values of c greater than -7/8.

3 0
3 years ago
2. The width of a rectangle is 12 inches less than its length. The perimeter of the rect-
Alona [7]

Answer:

P= 2*Lenght + 2*Width

Since the perimeter is 56 inches we can solve for the lenght with this equation:

56 in = 2*12in + 2*Length

And solving for the length we got:

Length = \frac{56in -24 in}{2} 16 in

So then the lenght = 16 inhes and the width of 12 inches

Step-by-step explanation:

For a rectangle of width 12 inches and lenght y inches we know that the perimeter is given by:

P= 2*Lenght + 2*Width

Since the perimeter is 56 inches we can solve for the lenght with this equation:

56 in = 2*12in + 2*Length

And solving for the length we got:

Length = \frac{56in -24 in}{2} 16 in

So then the lenght = 16 inhes and the width of 12 inches

5 0
3 years ago
Solve for a: 3a – 5(a – 2) = 34<br><br> a = -12<br><br> a = 0<br><br> a = -22<br><br> a = 1
Evgen [1.6K]

3a - 5(a - 2) = 34

Distribute -5 inside the parentheses

3a - 5a + 10 = 34

Combine like terms

-2a + 10 = 34

Subtract 10 from both sides

-2a = 24

Divide both sides by -2

a = -12

8 0
4 years ago
Read 2 more answers
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