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Aleonysh [2.5K]
4 years ago
14

Which expressions are perfect cubes? -1,000 0 2721 343p O n30 ebo... -1

Mathematics
1 answer:
Vikki [24]4 years ago
4 0

Answer: -1000, 27r^21, g^3h^30, and -1

Step-by-step explanation:

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5+19×2 in bodmas formular is what?​
Xelga [282]

Answer:

Step-by-step explanation:

5+19×2

Multiplication come first before addition

= 5 + 18

= 23

4 0
4 years ago
The ratio table below shows the relationship between the number of bricks in a wall and the length of the wall.
Elza [17]

Answer:

When number of bricks is multiplied by 2, the length is multiplied by

B) 2

Step-by-step explanation:

Number of bricks is two times the length of the wall

i.e. Number of bricks= 2×Length of the wall

When the number of bricks is multiplied by 2, the length is also multiplied by 2

since, when number of bricks=6 then, length of wall=3

and when number of bricks=2×6=12 then, length of wall=2×3=6

Hence, when number of bricks is multiplied by 2, the length is multiplied by

B) 2

6 0
4 years ago
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Step-by-step explanation:

4 0
3 years ago
Someone help me with math problems ASAP!!!!!
Nonamiya [84]

Answer:

9 1/3

Step-by-step explanation:

4 0
4 years ago
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Ten people at a party decide to compare ages. Five people are 30 years old, three are 32, one is 31, and one is 65.
horrorfan [7]
Given:
Ten People
5 people = 30 years old
3 people = 32 years old
1 person = 31 years old
1 person = 65 years old

We need to arrange the ages in order from least to greatest.

30, 30, 30, 30, 30, 31, 32, 32, 32, 65 
65 is the outlier. 

A.) mean age without the outlier. count of the numbers : 9
5 x 30 =    150
1 x 31 =      31
3 x 32 =<u>      96</u>
total age  277
÷ # of pax<u>    9</u>
mean         30.77 round to the nearest tenth 30.80

b.) Standard deviation:
We need to calculate variance first:
5 pax : 30 - 30.80 = - 0.80 ⇒ -0.80² = 0.64 * 5pax = 3.20
1 pax : 31 - 30.80 =   0.20 ⇒  0.20²  = 0.04 * 1pax = 0.04
3 pax : 32 - 30.80 =   1.20 ⇒  1.20² = 1.44 * 3 pax = 4.32

Variance : (3.20 + 0.04 + 4.32) / 9 pax = 7.56 / 9 = 0.84

Standard deviation is simply the square root of the variance.

Standard deviation = √0.84 = 0.916 

0.916 round to nearest hundredths is 0.92
0.916 round to nearest tenths is 0.90
8 0
3 years ago
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