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Ilya [14]
3 years ago
6

What is 1/3 plus 1/4

Mathematics
2 answers:
Kay [80]3 years ago
4 0
7/12 is that answer because u need to have the common denominator
My name is Ann [436]3 years ago
4 0
1/3 plus 1/4 is 7/12 because when you find the common denominator you can do anything
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it takes 63 minutes for four people to paint nine walls how many minutes does it take seven people to paint four walls?
joja [24]

Answer:

16 minutes

Step-by-step explanation:

If it takes 63 minutes to paint 9 walls then it means for every wall, it takes 63/9=7 minutes

Since it is 4 people working for 7 mins, the individual rate is 4/7 minutes per person

When we have 7 people, then the number minutes they take will be 7*4/7=4 minutes per wall

4 min per wall for 4 walls then total time will be 4*4=16 minutes

3 0
2 years ago
Elena needs to cut a square piece of wood with an area of 69 square inches.How long should the sides of the square be, rounded t
Reil [10]
You need to find the root of 69 since the length and width are multiplied to get the area, therefore it would be 8.3 inches.
5 0
3 years ago
Read 2 more answers
Find the inverse of each function.
Novosadov [1.4K]

as you should know, to get the inverse of any expression, we start off by doing a quick switcheroo on the variables and then solve for "y".

\stackrel{f(x)}{y}=\sqrt{x}-5\implies \stackrel{\textit{quick switcheroo}}{x=\sqrt{y}-5}\implies x+5=\sqrt{y} \implies (x+5)^2=y \\\\\\ \stackrel{F~O~I~L}{(x+5)(x+5)}=y\implies x^2+10x+25=\stackrel{f^{-1}(x)}{y}

3 0
2 years ago
An object is dropped from a bridge and allowed to freefall to the ground. The height of the object over time can be modeled usin
ioda
The height at time t is
h(t) = 144 - 16t²

When t = 0, then h = 144.
Therefore the height from the ground is 144 when the object is dropped.

When the object reaches the ground, h = 0.
Therefore
144 - 16t² = 0
t² = 144/16 = 9
t = 3 s

Answer:
The object reaches the ground in 3 seconds.

4 0
2 years ago
Read 2 more answers
Describe the error in the subtraction shown below ​
Gemiola [76]

Answer:

-11x+12

Step-by-step explanation:

(x^2-4x+3)-(x^2+7x-9)

x^2-x^2-4x-7x+3-(-9)

-11x+3+9

-11x+12

8 0
2 years ago
Read 2 more answers
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