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mart [117]
3 years ago
11

The mean length of 9 childrens' big finger is 8.5cm. The mean length of 7 adults' big finger is 16.4cm. What is the mean length

(rounded to 2 DP) of these 16 people's big finger?
Mathematics
1 answer:
Eddi Din [679]3 years ago
6 0

Step-by-step explanation:

(8.5 cm + 16.4 cm) ÷ 16

= 24.9cm ÷ 16

= 1.25

= 1.25 cm

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0=2x+3(3x-4)-(-x+14)<br><br> Fraction answer need help!!!
blondinia [14]
<span>0=2x+3(3x-4)-(-x+14) 
Follow BEDMAS
</span><span>0=2x+9x-12-(-x+14) 
</span>0=2x+9x-12+x-14
Add like terms
0=11x-12+x-14
0=12x-12-14
0=12x-26
Flip the eqaution
12x-26=0
Move -26 across the equal sign
12x=0+26
12x=26
x=26/12
x=13/6

Hope this helps! A thanks/brainiest answer would be appreciated :)
5 0
3 years ago
Can U solve this?!<br><br> No Improper answers!
amm1812

Answer:

1

Step-by-step explanation:

multiply and divide(left to right)

=9-9+1

Add and subtract(left to right)

=1

6 0
3 years ago
Read 2 more answers
g A trial jury of 6 people is selected from 20 people: 8 women and 12 men. What is the probability that the jury will have an od
cricket20 [7]

Answer: P(odd) = 0.499

Step-by-step explanation:

Given:

Total number of people = 20

Number of men = 12

Number of women = 8

Number of jury to be selected = 6

For the jury to have an odd number of women. it must have either of the three.

1. 1 woman , 5 men

2. 3 women, 3 men

3. 5 women, 1 man

The total possible ways of selecting the 6 people jury is;

N = 20C6 = 20!/6!(20-6)!

N = 38760

The possible ways of selecting;

Case 1 : 1 woman, 5 men

N1 = 8C1 × 12C5

N1 = 8 × 792 = 6336

Case 2 : 3 women , 3 men

N2 = 8C3 × 12C3

N2 = 12320

Case 3 : 5 women, 1 man

N3 = 8C5 × 12C1

N3 = 672

P(Odd) = (N1+N2+N3)/N

P(odd) = (6336+12320+672)/38760

P(odd) = 19328/38760

P(odd) = 0.499

6 0
3 years ago
The dimensions of a square are altered so that one dimension is increased by 7 feet, while the other is decreased by 2 feet. The
Kamila [148]

Answer:

the original area is 64ft squared or 169ft squared more perdurable 64  

Step-by-step explanation:

(x-2)(x+7)=90

x^2 +5x -14=90

x^2 +5x -14 -90=90-90

x^2 +5x -104=0

factor it out

(x−8)(x+13)=0

so 8 or -13

4 0
3 years ago
Richard has a rectangular plot of land that is 525 feet long and y feet wide. He decides to build a fence around the plot. If th
SOVA2 [1]
The perimeter of the figure or polygon is calculated by adding up the value of the sides. In this case,
 
           Perimeter = 2 (length + width)

We are given that the length is equal to 525 ft.
           1205 = (2)(525 + y)

The value of y from the equation is 77.5 ft. 

Answer: 77.5 ft
6 0
3 years ago
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