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Zolol [24]
2 years ago
11

C)The elevation of city A is 60 feet above sea level; the elevation of city C is 12 feet above sea level. The elevation of city

D is 1 over 2 of the elevation of city C.
Part A: Write an expression to represent the elevation, in feet, of city D. (5 points)

Part B: Solve the expression and explain why the answer is negative or positive. (5 points)
Mathematics
1 answer:
Norma-Jean [14]2 years ago
3 0

A. The expression to represent the elevation of city D is 1/2 × 12.

B. Solving the expression, 1/2 × 12 = 6 ft the elevation of city D is positive because the elevation of city D is above sea level.

The elevation of city A is 60 ft above sea level .

The elevation of city C is 12 ft above sea level.

The elevation of city D is 1 /2 of the elevation of city C. Therefore, the elevation of city D above sea level will be

  • 1/2 of 12 = 1/2 × 12

A.

The expression to represent the elevation in feet of city D is as follows:

  • 1/2 of 12 = 1/2 × 12

B.

Let's solve the expression below:

  • 1/ 2 × 12 = 6 feet.

The answer is positive because the elevation of city D is above see level.

read more: brainly.com/question/25321223?referrer=searchResults

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Aliun [14]
The answer to this problem would be c.
7 0
2 years ago
A 2.5​ ft wide circular track for a camera dolly is set up for a movie scene. The two rails of the track form concentric circles
Deffense [45]

Answer:

15.71 ft

Step-by-step explanation:

Given that:

width of the circular track = 2.5ft

Suppose the radius of the inner circle is 57 ft since it is not given

Then the radius of the outer circle = (2.5 + 57) ft = 59.5 ft

The circumference of a circle = 2πr

For inner circle now, the circumference = 2 × π × 57 ft

For inner circle now, the circumference = 358.14 ft

For the outer circle, the circumference = 2 × π × 59.5 ft

For the outer circle, the circumference = 373.85 ft

The difference between the circumference of the outer wheel from the inner wheel shows how farther does a wheel on the outer rail travel than a wheel on the inner rail of the track in one​ turn

∴

= ( 373.85 - 358.14 ) ft

= 15.71 ft

6 0
3 years ago
What is -13,8,-5,3,-2,...
Minchanka [31]
What do you meen they are numbers

8 0
3 years ago
During a concert the temperature should not rise above 40°C.
zaharov [31]

Answer:

the answer is 55

Step-by-step explanation:

if you subtract 40 degrees from 95 degrees you get 55 degrees. There are plenty of other ways to do that problem but i have a little bit of time. SORRY!

                                                                       -  I hope that helped

6 0
3 years ago
Solve the following quadratic equation. (x+12)^2=1 A. x = 11 and x = 13 B. x = -11 and x = -13 C. x = -11 and x = 13 D. x = 11 a
sveticcg [70]

Answer:

b

Step-by-step explanation:

(x+12)^2=1

or

(x+12)= +or - 1

when

x+12=1

x=1-12 =-11

when

x+12=-1

x=-1-12 =-13

then

x=-11 and x= -13

7 0
3 years ago
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