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zimovet [89]
2 years ago
13

The mean of x y and z is 20. find the mean of x-5 y+4 z-5

Mathematics
1 answer:
Dafna11 [192]2 years ago
7 0

Answer:

18

Step-by-step explanation:

Sum of x, y and z = 20 × 3

                             = 60

x-5+y+4+z-5 = 60-5+4-5

                    = 54

Mean of x-5, y+4 and z-5

= 54 ÷ 3

= 18

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(1/8 + 3/12) x (1 1/6-1/2)
aivan3 [116]

Answer:

1/2

Step-by-step explanation:

(1/8+3/12)×(11/6-1/2)

Using bodmas

Deal with the bracket first and it should start with the addition

1/8+3/12

Lcm of the two is 96

12+24/96

=36/96

Then move to the next bracket

11/6-1/2

Lcm is 6

11-3/6

=8/6

Bring the two answers together

36/96×8/6

=1/2

5 0
3 years ago
Read 2 more answers
Find the equation of the line that passes through (3,-4) and is parallel to 3x+y+2=0
miskamm [114]

Answer:

y=-3x+5

Step-by-step explanation:

it parallel to 3x+y+2=0 => line is: 3x+y+c=0

It through (3;-4) => 3(3)+(-4)+c=0 <=> c=-5

Line is 3x+y-5=0 => y=-3x+5

4 0
3 years ago
Read 2 more answers
Devin is on his school's swim team. During his 2-week winter break, he swims 30 laps each week to stay in shape. If each lap is
tamaranim1 [39]

I think... 1500

Step-by-step explanation:

multiply 30 and 25 then times 750 as your answer by 2 to get 1500

7 0
3 years ago
Denise lives in a two-story house with a basement. The first
Umnica [9.8K]

Answer:

Distance = 110.5 cm

Step-by-step explanation:

It is given that,

The basement floor is at  an elevation of −10.5 feet

The second story floor has an  elevation of 121 feet.

We need to find the distance between the basement floor and the second story floor.

Distance = -10.5 + 121

= 110.5 feet

So, the distance between the basement floor and the second story floor is 110.5 cm.

7 0
3 years ago
What is 1/8 of the sum of 28 and 43
victus00 [196]
1/8 of anything is just 1/8 * anything, so   \bf \cfrac{1}{8}\times (28+43)
3 0
3 years ago
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