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guajiro [1.7K]
2 years ago
9

Gabe drops a hammer from an apartment that is 30 meters above the ground. The height of the hammer in meters, h, after t seconds

is modeled by the function below.
h(t)=-t^2-2t+30
Find the approximate number of seconds it will take for the hammer to hit the ground. Round your answer to the nearest whole number.
A. 0
B. 5
C. 10
D. 30
Mathematics
1 answer:
anyanavicka [17]2 years ago
4 0

Simplifying
h(t) = -1t2 + -2t + 30

Multiply h * t
ht = -1t2 + -2t + 30

Reorder the terms:
ht = 30 + -2t + -1t2

Solving
ht = 30 + -2t + -1t2

Solving for variable 'h'.

Move all terms containing h to the left, all other terms to the right.

Divide each side by 't'.
h = 30t-1 + -2 + -1t

Simplifying
h = 30t-1 + -2 + -1t

Reorder the terms:
h = -2 + 30t-1 + -1t

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We know that we are solving for y.


This is a step by step procedure to get the value of y.


First: Move all terms to the left side and set equal to zero.


Second: Then set each factor equal to zero.

 

The application is:


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Step-by-step explanation:

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2 years ago
Because bernard has some health issues, he must pay 15% more for life insurance. about how much more annually will a $115,000 10
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The amount more annually a $115,000 10-year term insurance at age 35 cost Bernard than someone of the same age without health issues is $24.

<h3>What are insurance premiums?</h3>

The insurance premium is paid as a cost to cover a possible loss that is unseen.

The annual premium rate as a percentage of the value insured a person at age 35 has to pay is 0.14%.

From the given information, we have that the amount a 35-year-old without health issues will pay per $1,000 is $1.40

The amount to be paid for $115,000 is 115 × $1.4 = $161

The amount Bernard pays = 15% more

= 1.15 × $161

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Therefore,

The amount more Bernard has to pay = $185.15 - $161

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Yeah there right it’s B
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