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Dovator [93]
2 years ago
15

Brainliest if you finish fast and simple and if correct!!!!!!!!!

Mathematics
2 answers:
notsponge [240]2 years ago
7 0

Mark the other user as brainliest!

iren [92.7K]2 years ago
3 0

Answer:

1. 8

2. 8 calories

3. 125 lb

Step-by-step explanation:

From inspection of the graphs

1. x ≥ 125 = 8

2. 8 calories

3. 125 lb

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Nataliya [291]

4. 1,50

5. 0,50

6. Tawni swims the fastest because she swims at roughly 0,8 meters per second which is faster than the other two contestants.

8 0
3 years ago
A spotlight on the ground shines on a wall 12 m away. If a man 2 m tall walks along the x-axis from the spotlight toward the bui
tester [92]

Answer:

(dy/dt) = - 0.45 m/s (the minus sign indicates that the height of the shadow decreases as the man moves towards the wall).

Step-by-step explanation:

An image of the problem is presented in the attached file to this solution. The image shows the exact moment when the 2m tall man is 4m away from the wall.

First of, when the man is 4m away from the wall, he is 8m away from the spotlight, that is, x = 8m

Using the concept of similar triangles, we can obtain the value of y at this point.

(x/2) = [(x+4)/y]

x = 8

(8/2) = (12/y)

y = 3m when x = 8m

From the image,

But generally, for x and y at any point,

(x/2) = (12/y)

xy = 24

Differentiating with respect to t

(d/dt)(xy) = (d/dt)12

y (dx/dt) + x (dy/dt) = 0

x (dy/dt) = - y (dx/dt)

At x = 8m, y = 3m, (dx/dt) = 1.2 m/s

8 (dy/dt) = - 3 (1.2)

(dy/dt) = - 3.6/8 = - 0.45 m/s

The minus sign indicates that the height of the shadow decreases as the man moves towards the wall.

7 0
3 years ago
(8x + 9) + (15 - 8x)
Ilia_Sergeevich [38]
8x +9 + 15-8x is -32 it’s that easy
5 0
2 years ago
At a wedding reception an equal number of guests were seated at each of three large tables, and 7 late arriving desks were seate
nikitadnepr [17]

Answer:

10 guests a table

Step-by-step explanation:

3 tables

7 late arrivals

37 total people

37 minus 7 is 30

30 divided by 3 is 10

answer is 10

8 0
2 years ago
What is the value of x in the following system Y=3x-5 and 6x+3y=15
beks73 [17]

Answer:

hope this helped

7 0
2 years ago
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