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Tpy6a [65]
3 years ago
15

A hang glider pilot accidentally drops her compass from the top of a 400-foot cliff. The height h of the compass after t seconds

is given by the quadratic equation h=−16t2+400. When will the compass hit the ground?
Mathematics
1 answer:
KonstantinChe [14]3 years ago
7 0

Answer:

5 seconds

Step-by-step explanation:

H= -16t2 + 400

Hit ground

H=0

0 = -16t2 + 400

0 = -16 ( t2 - 25)

-16

t2 -25 = 0

(t + 5)(t - 5) = 0

t + 5 = 0

- 5 -5

t = -5

t - 5 = 0

+ 5 +5

t = -5

t = 5

5 seconds to hit the ground

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An international company has 25,800 employees in one country. If this represents 31.1% of the companies employees, how many empl
aksik [14]

Answer:

Rounded to the nearest integer, the company has a total of 82,958 employees.

Step-by-step explanation:

Given that an international company has 25,800 employees in one country, if this represents 31.1% of the companies employees, to determine how many employees does it have in total, the following calculation must be performed:

31.1 = 25,800

100 = X

100 x 25,800 / 31.1 = X

2,580,000 / 31.1 = X

82,958.1 = X

Thus, rounded to the nearest integer, the company has a total of 82,958 employees.

3 0
3 years ago
I need help pleaseeeeee nowplease
marysya [2.9K]
This is a pretty complex problem
6 0
3 years ago
what are two equivalent expressions to the following radical expression: (√10 to the 4th power x √12 to the 4th power) to the 8t
brilliants [131]

Answer:

(14400x^4)^8

Step-by-step explanation:

sqrt10 to the 4th is 10^2 or 100, and xsqrt12 to the 4th is 144x^4. Multiply these to get (14400x^4), and take the 8th to get (14400x^4)^8.

3 0
3 years ago
What is the sum of 6 feet 10 inches and 8 feet 9 inches
sertanlavr [38]
 The answer is 15 foot 7 inches or 187 inches.
3 0
3 years ago
Read 2 more answers
Solve for x. 8(9x-4)-2=3+2
gavmur [86]
So first you have to move the -2 over to the opposite side.
8(9x-4)=3+2+2
Then you can simplify the right side 
8(9x-4)=7
Then you distribute
8*9x=72x
8*-4=-32
so now you have...
72x-32=7
Then you move the 37 over
72x=39
Then you divide by 72 to isolate x
x=39/72 or x= 13/24 or <span>x=0.54167</span>
6 0
2 years ago
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