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KengaRu [80]
3 years ago
9

Evaluate 12.3p+11.5r when p=6 and r=7. 12.3​(___)+11.5​(___) = ​___+80.5 = ​__

Mathematics
1 answer:
Ronch [10]3 years ago
8 0

Answer:

I don't get it

Step-by-step explanation:

you need to clarify so that i can searched it

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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
Tessa spent $22 on 11 song downloads. How much did each song cost?
Reika [66]

Answer:

Each song cost $2

Step-by-step explanation:

2 times 11 is 22

Make me brainliest if this helps!

4 0
3 years ago
Read 2 more answers
Estimate the area under the curve f(x) = x2 + 1 from x = 0 to x = 6 by using three circumscribed (over the curve) rectangles. An
BaLLatris [955]
1) split the range in three identical invervals of size [6 - 0] / 3 = 2

2) form three rectangles

2a) First rectangle: base 2, height f(2) = 2^2 + 1 = 5

     area 1 = base * height = 2 * 5 = 10

2b) second rectangle: base 2, height f(2+2) = 4^2 + 1 = 17

     area 2 = 2 * 17 = 34

2c) third rectangle: base 2 height f(4+2) = 6^2 + 1 = 37

     area 3 = 2*37 = 74

3) total area = area 1 + area 2 + area 3 = 10 + 34 + 74 =  118

3 0
3 years ago
Two sides of a triangle are 11 centimeters and 14 centimeters. What are all possible values for the length x of the third side?
vichka [17]
Im having a problem on this problem too
3 0
3 years ago
Expand (3x + 4)(2x – 5)
avanturin [10]

Answer:

6x^2-7x-20

Step-by-step explanation:

Use the FOIL method: (a+b)(c+d)= ac+ad+bc+bd

6x^2-15x+8x-20

Collect like terms:

6x^2+(-15x+8x)-20

Simplify:

6x^2-7x-20

4 0
3 years ago
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