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MAXImum [283]
3 years ago
5

Kyle is painting the front door of his house. The dimensions of the door are 80 inches by 36 inches by 2 inches. If he paints al

l of the surfaces, how much area will he paint?
Mathematics
1 answer:
Ilya [14]3 years ago
7 0
Answer: 5760 inches^3
You might be interested in
the length of the shadow of a pole on level ground increases by 90m when the angle of elevation of the sun changes from 58 degre
Anarel [89]

Answer:

The height of the pole is 167 m

Step-by-step explanation:

The given parameters are;

Increase  in the length of the shadow = 90 m

Initial angle of elevation of the Sun = 58°

Final angle of elevation of the Sun = 36°

We have a triangle formed by the change in the length of the shadow and the rays from the two angle of elevation to the top of the pole giving an angle 22° opposite to the increase  in the length of the shadow  

We have by sin rule;

90/(sin (22°)  = (Initial ray from the top of the pole to the end of the shadow's length)/(sin(122°)

Let the initial ray from the top of the pole to the end of the shadow's length = l₁

90/(sin (22°)  = l₁/(sin(122°)

l₁ = 90/(sin (22°) ×(sin(122°) = 283.3 m

Therefore;

The height of the pole = 283.3 m × sin(36°) = 166.52 m

The height of the pole= 167 m to three significant figures.

3 0
3 years ago
Read 2 more answers
Find the value of f(–3) and g(3) if f(x) = –6x + 3 and g(x) = 3x + 21x–3.
ryzh [129]

Answer:

f(-3) = 21

g(3) = 69

Step-by-step explanation:

We have been given the following functions;

f(x) = –6x + 3

g(x) = 3x + 21x–3.

To find f(-3) , we simply substitute x = -3 in the function of f(x);

f(-3) = -6(-3) + 3

      = 21

To find g(3) , substitute x = 3 in the function of g(x);

g(3) = 3(3) +21(3) - 3

      = 69

3 0
3 years ago
The plates move at an average rate of about 5cm/y. How far have the plates traveled, assuming a constant rate, during this time?
seropon [69]

Answer:

travel from 5 to 10 cm/yr.

Step-by-step explanation:

5 0
2 years ago
To convert from square miles to square feet,what operation will you use
Serga [27]

The correct one is multiplication.

-- Take the number of square miles.

-- Multiply it by the fraction      (5,280 feet / 1 mile)² .

-- After canceling things where possible, simplifying, and
cleaning up the product, what you have is the same area
expressed in square feet.
7 0
3 years ago
Read 2 more answers
A company has a policy of retiring company cars; this policy looks at number of miles driven, purpose of trips, style of car and
Alexxandr [17]

Answer:

P = 0,0012     or   P = 0.12 %

Step-by-step explanation:

We know for normal distribution  that:

μ ± σ  in that range we find 68.3 % of all values

μ ± 2σ      ⇒  95.5 %      and

μ ± 3σ      ⇒  99.7 %  

Fom problem statement

We have to find (approximately)  % of cars that reamain in service between 71 and 83 months

65 + 6 = 71                ( μ + σ )     therefore 95.5 % of values are from 59 and up to 71  then by symmetry   95.5/2  =  49.75 of values will be above mean

Probability between 65 and 71 is  49.75 %

On the other hand 74 is a value for mean plus 1, 5 σ  and

74 is the value limit for mean plus 1,5 σ and correspond  to 49,85 (from z=0 or mean 65).

Then the pobabilty for 83 have to be bigger than 49.85 and smaller than 0,5 assume is 49.87

Finally the probability approximately for cars that remain in service between 71 and 83 months is :  0,4987 - 0.49.75

P = 0,0012     or   P = 0.12 %

8 0
3 years ago
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