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eduard
2 years ago
5

SOMEONE PLEASE TRY AND HELP ME ASAPPPP‼️‼️‼️ WHO’S GOOD AT MATHS⁉️

Mathematics
1 answer:
DanielleElmas [232]2 years ago
3 0

Hmmmm

This looks like homework, you sure you've read the terms of service?

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Luiza is jumping on a trampoline.
lyudmila [28]

Answer:

The second time when Luiza reaches a height of 1.2 m = 2 08 s

Step-by-step explanation:

Complete Question

Luiza is jumping on a trampoline. Ht models her distance above the ground (in m) t seconds after she starts jumping. Here, the angle is entered in radians.

H(t) = -0.6 cos (2pi/2.5)t + 1.5.

What is the second time when Luiza reaches a height of 1.2 m? Round your final answer to the nearest hundredth of a second.

Solution

Luiza is jumping on trampolines and her height above the levelled ground at any time, t, is given as

H(t) = -0.6cos⁡(2π/2.5)t + 1.5

What is t when H = 1.2 m

1.2 = -0.6cos⁡(2π/2.5)t + 1.5

0.6cos⁡(2π/2.5)t = 1.2 - 1.5 = -0.3

Cos (2π/2.5)t = (0.3/0.6) = 0.5

Note that in radians,

Cos (π/3) = 0.5

This is the first time, the second time that cos θ = 0.5 is in the fourth quadrant,

Cos (5π/3) = 0.5

So,

Cos (2π/2.5)t = Cos (5π/3)

(2π/2.5)t = (5π/3)

(2/2.5) × t = (5/3)

t = (5/3) × (2.5/2) = 2.0833333 = 2.08 s to the neareast hundredth of a second.

Hope this Helps!!!

4 0
2 years ago
What is the value of z?
OLga [1]
Answer:

z = 86

Explanation:

90 - 68 = 12
180 - 78 = 102
102 + 12 = 114
180 - 114 = 86


3 0
2 years ago
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What is the radius of a sphere that has a surface area of 12.56in2
puteri [66]
The radius of a sphere that has a surface area of 12.56in2 would turn out to be: 
4\pir²
8 0
3 years ago
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Katie is biking to the beach. The graph gives her distance from the beach x hours after she began riding.
Burka [1]

Answer:

1. Distance from Katie's House to the beach = 75 km

2. Hours that it takes to get to the beach = 6 hrs

3. -12.5 which tells us the rate at which katie traveled which was 12.5 km per hour

Steps to 3.

Rise/Run = -75/6 = -12.5 = slope

3 0
3 years ago
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A survey on planet rew found that 80% preferred tott juice to all other juices. if 32 beings preferred tott juice, how many bein
Goryan [66]
I think it is 38 people total. For everyone
I think...
4 0
2 years ago
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