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AlekseyPX
3 years ago
10

An elevator goes down 8 floors

Mathematics
1 answer:
dezoksy [38]3 years ago
5 0
And?
You dont want to walk 8 stair cases
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A bag has 2 yellow, 7 red, and 1 green marble. What is the probability of picking a yellow marble, replacing it, and then pickin
s2008m [1.1K]
2 yellow marbles, 7 red marbles, 1 green marble.....total of 10 marbles

probability of first picking a yellow marble : 2/10 reduces to 1/5
replacing the marble
probability of picking another yellow marble : 2/10 reduces to 1/5

probability of both is : 1/5 * 1/5 = 1/25 <==
3 0
3 years ago
The minute hand of a clock moves from 3 o'clock to 6 o'clock, or 1/4 of a complete revolution. Through how many degrees does it
jarptica [38.1K]
Well, there's 360 degrees in a full circle. 
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360\div4=90

The minute hand moved 90 degrees.
7 0
3 years ago
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Combine like terms and apply the distributive property to create an equivalent expression:
chubhunter [2.5K]

Answer:

Equivalent expression is 15a+8b

Step-by-step explanation:

Given expression is,

2\left(5a+3b\right)+5a+2b

First step is to apply distributive property. The property states that,

a\left(b+c\right)=ab+ac

Applying the property,

2\left(5a\right)+2\left(3b\right)+5a+2b

Simplifying,

10a+6b+5a+2b

Collecting like terms,

10a+5a+6b+2b

Combining the like terms,

15a+8b

Therefore, equivalent expression is 2\left(5a+3b\right)+5a+2b=15a+8b

6 0
4 years ago
Use the slope formula to find the slope of the line that passes through the points (4, -1) and (3, -1) *
GenaCL600 [577]

Answer:

slope = 0

Step-by-step explanation:

Calculate m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (4, - 1 ) and (x₂, y₂ ) = (3, - 1 )

m = \frac{-1-(-1)}{3-4} = \frac{-1+1}{-1} = \frac{0}{-1} = 0

7 0
3 years ago
Students in grade6, 7 and 8 sold a total of 320 concert tickets.
Luba_88 [7]

Answer:

x=320+t-s

Step-by-step explanation:

8 0
3 years ago
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