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77julia77 [94]
4 years ago
10

When Nikki and Cara work together last year, they painted a fence in 8 hours. The previous year, Nikki painted the fence by hers

elf. The year before that, Kara painted by herself, but took 12 hours longer. How long did it take Kara to paint the fence?​

Mathematics
1 answer:
ira [324]4 years ago
4 0

Answer:

The answer to your question is letter D. 24 hours

Step-by-step explanation:

Data

Nikki + Kara = 8 hours

Kara = 12 hours

Nikki = ?

Process

1.- Calculate the time Nikki painted in 1 hour

Nikki and Kara painted the fence in 8 hours then, in 1 hour the painted 1/8    

Kara paint the fence in 12 hours then, in 1 hour she painted 1/12

The Kara painted in 1 hour:

                  Kara = 1/8 - 1/12

                  Kara = (3 - 2) / 24 = 1/24

2.- Calculate the time

Then in 1 hour she painted 1/24 of the fence, all the fence was painted in

      (1/24)24 = 1  which means 24 hours.

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Convert a distance of 42 feet into yards.
dybincka [34]

Answer:

14 Yards

Step-by-step explanation:

8 0
3 years ago
Travis is deciding how to study math tonight he is choosing between studying ofG patterns P or equations E he also is deciding w
expeople1 [14]

Answer:

GT, GV, PT, PV, ET, and EV.

Step-by-step explanation:

Given that

The number of topics Travis has to chose from are 3 topics(G, P, E).

The number of ways Travis can study each topic are 2 ways(T, V).

Essentially, the number of combinations Travis is expected to be able to chose from is given as

The number of combinations = The number of topics * The number of ways

The number of combinations = 3 * 2

The number of combinations = 6

Therefore, the total possible combinations has to be

GT, GV, PT, PV, ET, and EV

7 0
3 years ago
PLEASE I NEED HELP ASAP
Annette [7]

The coordinates of the vertex that A maps to after Daniel's reflections are (3, 4) and the coordinates of the vertex that A maps to after Zachary's reflections are (3, 2)

<h3>How to determine the coordinates of the vertex that A maps to after the two reflections?</h3>

From the given figure, the coordinate of the vertex A is represented as:

A = (-5, 2)

<u>The coordinates of the vertex that A maps to after Daniel's reflections</u>

The rule of reflection across the line x = -1 is

(x, y) ⇒ (-x - 2, y)

So, we have:

A' = (5 - 2, 2)

Evaluate the difference

A' = (3, 2)

The rule of reflection across the line y = 2 is

(x, y) ⇒ (x, -y + 4)

So, we have:

A'' = (3, -2 + 4)

Evaluate the difference

A'' = (3, 4)

Hence, the coordinates of the vertex that A maps to after Daniel's reflections are (3, 4)

<u>The coordinates of the vertex that A maps to after Zachary's reflections</u>

The rule of reflection across the line y = 2 is

(x, y) ⇒ (x, -y + 4)

So, we have:

A' = (-5, -2 + 4)

Evaluate the difference

A' = (-5, 2)

The rule of reflection across the line x = -1 is

(x, y) ⇒ (-x - 2, y)

So, we have:

A'' = (5 - 2, 2)

Evaluate the difference

A'' = (3, 2)

Hence, the coordinates of the vertex that A maps to after Zachary's reflections are (3, 2)

Read more about reflection at:

brainly.com/question/4289712

#SPJ1

8 0
2 years ago
Find n and r 10 pointssss
IrinaK [193]
N is 10.6
And
R is 5.2
7 0
3 years ago
Find the indicated values, where
Rom4ik [11]

Answer:

option (b) is correct.

The value of g(f(3)-2f(1))  is 0.

Step-by-step explanation:

Given: g(t)=t^2-t and f(x)=1+x

We have to find the value of g(f(3)-2f(1))

Consider the given function f(x)=1+x

First evaluate value of function f(x) at x = 3 and 1 then substitute it in g(f(3)-2f(1)) .

f(3) = 1 + 3 = 4

f(1) = 1 + 1 = 2

Substitute, we get

g(f(3)-2f(1))=g(4-2(2))

Solving further , we get,

 g(f(3)-2f(1))=g(4-4)=g(0)

Now evaluate g(t)=t^2-t at t = 0 , we get,

g(0)=0^2-0=0-0=0

Thus, value of g(f(3)-2f(1))  is 0.

Thus, option (b) is correct.

4 0
3 years ago
Read 2 more answers
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