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Sonja [21]
3 years ago
5

What is five plus seven

Mathematics
2 answers:
labwork [276]3 years ago
8 0

Answer:

12

Step-by-step explanation:

5 + 7 = 12

If it helps, imagine you have 5 of something (plants, cookies, books, whatever helps) and 7 of the same thing. If you picture them together, you'll have 12.

brilliants [131]3 years ago
3 0

Answer:

12

Step-by-step explanation:

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In Lucille’s class, 35% of the students have blond hair. There are 20 students in the class. How many students have blond hair.
MrRissso [65]

Answer:

7 the answer is 7

Step-by-step explanation:

1. We assume, that the number 20 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 20 is 100%, so we can write it down as 20=100%.

4. We know, that x is 35% of the output value, so we can write it down as x=35%.

5. Now we have two simple equations:

1) 20=100%

2) x=35%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

20/x=100%/35%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 35% of 20

20/x=100/35

(20/x)*x=(100/35)*x       -

20=2.85714285714*x       -

20/2.85714285714=x

7=x

x=7

now we have:

35% of 20=7

we multiply both sides by x

then we divide both sides by 2.85714285714 to get x

3 0
3 years ago
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In Exercises 21-26, a fair coin is tossed two times in succession.
Brilliant_brown [7]

Answer: I need more context

Step-by-step explanation:

4 0
3 years ago
This cylinder is cut by the plane shown. the plane is perpendicular to the base of the cylinder. what is the shape of the cross-
densk [106]
I cannot see your picture, but if the plane cutting the cylinder is indeed perpendicular to the cylinder's base, then the cross section must be square or rectangular.  Going by the shape of most cylinders, I would guess that it is rectangular.
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3 years ago
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The vertex of this parabola is at (-3,2). Which of the following could be its equation?
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vertex form of a parabola

y= a(x-h)^2 +k

y =a(x--3)^2 +2

y = a(x+3)^2 +2

Choice B

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3 years ago
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A bag of numbered lottery balls contains the numbers 1 through 40. What is the probability that a randomly selected ball will be
RoseWind [281]

Answer:

37/40

Step-by-step explanation:

There are 3 numbers between 1 and 40 that are a multiple of 13: 13,26,39.

So, your probability should be 40-3/40, = 37/40.

3 0
3 years ago
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