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Aloiza [94]
2 years ago
8

I am not sure how to solve this 3z-4 and 2z + 5 =

Mathematics
1 answer:
bekas [8.4K]2 years ago
8 0
5z+1

I added them.

Let me know if that’s what you wanted me
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A scuba diver is 30 feet below the surface of the water 10 seconds after he entered the water and 100 feet below the surface aft
den301095 [7]

Answer:

2.3 feet/ second

Step-by-step explanation:

To find the rate of change, we will have to find the difference in his distance travelled and divide it by the time taken to move that distance.

This is given by rate of change = (change in position)/ change in time

From the question, his position changed from 30 ft to 100 ft thus the distance he travelled is = 100ft - 30 ft = 70 ft.

Time taken to travel this distance = 40 seconds - 10 seconds = 30 seconds

Diver's rate of travel = 70 ft / 30 seconds = 2.33333ft/second.

Rounding off the answer to the nearest tenth, we have 2.3 ft/second

5 0
3 years ago
Nikita ran a 5-kilometer race in 39 minutes (0.65 of an hour) without training beforehand. In the first part of the race, her av
s344n2d4d5 [400]

Nikita's distance from her for the second part of the race was 1.5 kilometers.

Since Nikita ran a 5-kilometer race in 39 minutes (0.65 of an hour) without training beforehand, and in the first part of the race, her average speed was 8.75 kilometers per hour, while for the second part of the race, she started to get tired, so her average speed dropped to 6 kilometers per hour, to determine which expression represents Nikita's distance for the second part of the race the following calculation must be performed:

  • 8.75 x 0.65 + 6 x 0 = 5.68
  • 8.75 x 0.50 + 6 x 0.15 = 5.275
  • 8.75 x 0.40 + 6 x 0.25 = 5
  • 100 = 60
  • 40 = X
  • 40 x 60/100 = X
  • 24 = X
  • 39 - 24 = 15
  • 15 = 1/4 hour
  • 6/4 = 1.5

Therefore, Nikita's distance from her for the second part of the race was 1.5 kilometers.

Learn more about maths in brainly.com/question/22791791

6 0
2 years ago
the graph of liner function f passes through the point (1,-9) ad has a slope of -3 what is the zero of f
Lostsunrise [7]

Answer:

answer 4 im pretty sure

Step-by-step explanation:

i did da math

8 0
2 years ago
Help if you can pls. if you can’t see the pic don’t bother answering.
liubo4ka [24]
Ashton Martin. Because 60 divided by 20 is 3.
5 0
2 years ago
Find the area of the triangle with the given measurements. Round the solution to the nearest hundredth if necessary. . . A = 50°
Ilia_Sergeevich [38]
Area of the triangle:
A = 1/2 · c · b · sin A =
=  1/2 · 30 · 14 · 0.766 ≈ 160.87 ft²
Answer: 160.87 ft²
5 0
3 years ago
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