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eduard
3 years ago
7

A pebble drops from a balcony that is 160 feet above the ground. The pebble lands on the top of a sign that is 16 feet high. The

function y=160-16t^2 represents the height y (in feet) of the pebble t seconds after dropping from the balcony. How many seconds does the pebble drop before hitting the sign?
Mathematics
1 answer:
MA_775_DIABLO [31]3 years ago
7 0

Answer:

3 seconds

Step-by-step explanation:

16 = 160 - 16t²

16t² = 144

t² = 9

t = 3

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The three angles of a triangle are in the ratio 5:4:1. Find all the angles of the triangle.
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Step-by-step explanation:

let the first angle be 5x

second be 4x

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as we know that by adding all the sides of triangle we get 180°

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5x+4x+1x=180°

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hence ,  

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first angle - 18*5 = 90°

second angle - 18*4=72°

third angle - 18°

HOPE THIS HELPS YOU !!!

6 0
3 years ago
Read 2 more answers
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6 0
3 years ago
Last year was 7040836 what is the value of the digit 4
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5 0
3 years ago
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trapecia [35]

Answer:4

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4 0
3 years ago
Read 2 more answers
1/3 of the guests chose beef
mario62 [17]
Find the common denominator of 3 and 12 which would be 12.
Then we add the 2 fractions together to get 9/12.
Now we know that 9/12 of the guests chose chicken and beef.
We also know that 69 guests is equivalent to 3/12 which can be simplified down to get 1/4.
So now we can do 69x4 to get 4/4 which is also 12/12, the amount of guests .
69x4 is 276
Your final should be 276.
3 0
3 years ago
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