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larisa86 [58]
2 years ago
10

Abraham throws a ball from a point 40 m above the ground. The height of the ball from the ground level after ‘t' seconds is defi

ned by the function h(t) = 40t – 5t2. How long will the ball take to hit the ground?
Mathematics
1 answer:
Minchanka [31]2 years ago
7 0

Answer:

8.899s

Solve: -5t^+40t+40

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A lake near the Arctic Circle is covered by a sheet of ice during the cold winter months. When spring arrives, the ice starts to
hichkok12 [17]

Answer: 1.5 meters


Step-by-step explanation:

Given: A lake near the Arctic Circle is covered by a sheet of ice during the cold winter months. S

S(t) models the ice sheet's thickness (in meters) as a function of time t (in weeks) S(t)=-0.25t+4

if we put x=0, then

S(0)=-0.25(0)+4\\=4\ meters

So 4 meters is the initial thickness

To find the thickness after 6 weeks, put x=6 we get

S(6)=-0.25(6)+4\\=-1.5+4=2.5\ meters

Decrease in thickness every 6 weeks= 4-2.5=1.5\ meters


3 0
2 years ago
Read 2 more answers
Below is a scale drawing of the town swimming pool in the drawing the longest side of the pool has length of 10 inches Paco crea
quester [9]

Answer:

2:1 that is 2 inches in real life is equal to 1 inch in the drawing.

Step-by-step explanation:

We are given the following in the question:

Longest side of the pool = 10 inches

Longest side of the pool in drawing = 5 inches

Scale:

We find the ratio of the real length of pool and the measurement of the length of the pool in the drawing.

\text{Scale} = \dfrac{10\text{ inches}}{5\text{ inches}} = 2:1

Thus, we can say Paco's new drawing follows a scale of 2:1 that is 2 inches in real life is equal to 1 inch in the drawing.

6 0
2 years ago
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PLEASE HELP ME! ANSWER CORRECT AND GET BRAINLIEST*! (If more than one answer)
avanturin [10]

Answer:1. C 3. 52

Step-by-step explanation:

6 0
2 years ago
An empty box weighs 200g the box is filled with birthday party goozy bags and now weighs 6.2kg Each goody bag weighs 150Work out
otez555 [7]
For this case, the first thing we are going to do is define variables.
 We have then:
 x: number of birthday party goozy bags
 y: total weight
 We then have the following equation:
 y = 150x + 200
 For y = 6200 we have:
 6200 = 150x + 200
 Clearing x:
 x = (6200-200) / (150)
 x = 40
 Answer:
 
there are 40 goody bags inside the box
5 0
2 years ago
Find the interquartile range (IQR) of the data in the dot plot below. cavities
Vlad [161]

Answer:

5.5

Step-by-step explanation:

The IQR describes the middle 50% of values when ordered from lowest to highest. To find the interquartile range (IQR), ​first find the median (middle value) of the lower and upper half of the data. These values are quartile 1 (Q1) and quartile 3 (Q3). The IQR is the difference between Q3 and Q1.

so 5.5 minus 0

correct me if this is wrong

7 0
2 years ago
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