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Korvikt [17]
3 years ago
10

14) The height, h metres, of a ball projected directly upwards from the ground can be modelled by h = 56t - 71, where t is the t

ime in seconds after it leaves the ground. a) Find the height of the ball 3.5 seconds after it leaves the ground. b) At what time will the ball strike the ground again? c) When will the ball be 49 m above the ground? Briefly explain why there are two possible answers.​
Mathematics
1 answer:
Agata [3.3K]3 years ago
6 0
Okay the height would be nice if it would have to come
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Please help me don’t skip!! :((
stira [4]

Answer:

D

Step-by-step explanation:

Your y - intercept in -1 so that automatically eliminates answer choices B and C. Now you have to look at your slope. From your y intercept how many do you need to go up and over to the right. In this case you would have to go up 2 places and over 1. Leading to the result 2/1. Since 2 divided by 1 is 2 your slope would be 2. Hoped this hepled :)

6 0
3 years ago
Emma enjoys flying kites. her red kite has a maximum altitude of 117.46 meters, and her black kite has a maximum altitude of 362
7nadin3 [17]
You have to convert 117.46 meters to feet. so you know that 0.3048 meters is 1 foot.  

117.46 / 0.3048= 385.37feet red kite
now you can simply subtract
385.37-362.26=23.11ft
the answer is, the red kite has an altitude 23.11 feet higher then the black kite.
5 0
3 years ago
Geoffery went on a trip across South America. He took 1,750 US dollars (USD) with him. In Chile, he traded his money for Chilean
musickatia [10]
Given:
$1,750
Rate = $1 = CLP 496.50
Spent : 217,513 pesos
Rate = CLP 1 = VEF 0.1283
Spent : 38,422.19 bolivars
Rate = VEF 1 = PGY1063.95 
Spent : 12,857,441.39 guarani
Rate = PYG 1 = $0.00002186

$1750 * CLP 496.50 = CLP 868,875
CLP 868,875 - 217,513 = CLP 651,362

CLP 651,362 * VEF 0.1283 = VEF 83,569.7446
VEF 83,569.7446 - 38,422.19 = VEF 45,147.5546

VEF 45,147.5546 * PYG 1063.95 = PYG 48,034,740.70
PYG 48,034,740.70 - 12,857,441.39 = PYG 35,177,299.30

PYG 35,177,299.30 * $0.00002186 = $768.976763 ⇒ $768.98


4 0
4 years ago
Read 2 more answers
Glenn and Helen are playing ping pong. For every 3 points that Glenn scores, Helen scores 8 points. If Glenn scores 9 points, ho
777dan777 [17]
Helen scores 24 points
7 0
3 years ago
What is 152,909 rounded to the nearest hundred thousands
lara31 [8.8K]
152,909 rounded to the nearest hundred thousands is 200,000.

Rules of rounding numbers
1) if the number being rounded off is followed by 0, 1, 2, 3, and 4, round the number down.
2) if the number being rounded off is followed by 5, 6, 7, 8, and 9, round the number down.

1 is the number on the hundred thousands place. It is followed by 5. We round 1 up to 2. Thus 2 is now in the hundred thousands place.


8 0
3 years ago
Read 2 more answers
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