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dlinn [17]
3 years ago
9

Please help! Thank you!

Mathematics
1 answer:
Aloiza [94]3 years ago
4 0

Answer:

X=sigma xi/no of observation

5= (?) /4

5*4=sum of all numbers

20=sum of all the observation

If you are helped by this answer pls tag me brianliest I really want it

THANK YOU.......

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Help me please I need help
Anastasy [175]
1) (-4 . x) + (-4 . 3) = 8
-4x - 12 = 8
-4x = 20
x = 20/-4
x = -5

2) 3 = (3/4 . b) + (3/4 . -8)
3 = 3/4b - 6
3 + 6 = 3/4b
9 : 3/4 = b
3 . 4 = b
12 = b

3) (1/6 . p) + (1/6 . 24) = 10
1/6p + 4 = 10
1/6p = 6
p = 36

4) 3/5 . a + 3/5 . 5,25 = 7,35
3/5a + 3,15 = 7,35
3/5a = 4,2
a = 7
6 0
3 years ago
An architect drew plans for an office building.
mel-nik [20]

Answer:

part A: a.

part B: 7200ft

Step-by-step explanation:

7 0
3 years ago
Mrs. Gordon sometimes makes her melon salad for special events. When she made it
Natali5045456 [20]
Answer: the watermelon costs $1 and the honeydew melon costs $3.
x = honeydew costs y = watermelon cost
3x+7y = 16
3(3)+7(1) = 16
9+7 = 16

7x+4y = 25
7(3)+4(1) = 25
21+4 = 25
8 0
3 years ago
SOMEONE PLEASE HELO ASAPPPPP WILL MARK BRAINLIESTTTTT PLEASEEEEE
Agata [3.3K]

Answer:

Try B) 2x - 3y = -9

Step-by-step explanation:

I plotted the points and started to make each answer into the "y = " formula. The only one that passed through all the points was B) 2x - 3y = -9 which I changed into y = 2x/3 + 3

5 0
3 years ago
Find the surface area of the polyhedron below. The area of each base is 65 cm^2<br>​
yarga [219]

Answer:

D. 290 square cm

Step-by-step explanation:

Surface area of polyhedron

= 2 \times 65 + 7 \times 8 + 4  \times 8 + 3 \times 8 + 3(2 \times 8) \\  = 130 + 56 + 32 + 24 + 48 \\  = 290 \:  {cm}^{2}

8 0
3 years ago
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