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zavuch27 [327]
3 years ago
13

Can I get help please!

Mathematics
1 answer:
Naily [24]3 years ago
8 0
55x5 - 40x5
The third one down
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A step by step answer please
Allushta [10]

Answer:

7.92 m.

Step-by-step explanation:

Mean height = ∑(f . x) / ∑f  where  x is the midpoint and f the frequencies

The midpoints for the heights are:

2 for frequency 8              ( 0 + 4)/ 2 = 2

6 for      ..           21

10 for    ..            12

14 for    ..              7

18 for   ..               2

So the mean is:

[(2*8) + (6*21) + (10*12) + (14*7) + (18*2) ] / (8 + 21+12+7+2)

= 396 / 50

= 7.92 m.

8 0
3 years ago
Which angles are supplementary angles?
Tpy6a [65]

Answer:

Supplementary angles are two angles with a sum of 18 0 ∘ 180 ^\circ 180∘ . A common case is when they lie on the same side of a straight line.

Answer - KJM and KJH

If i'm wrong please tell me

5 0
3 years ago
Tính đạo hàm của y=2x-1-căn3x-0
adoni [48]

Answer:

The derivative is

\frac{dy}{dx} = 2 -  \frac{2\sqrt3}{\sqrt x}\\

Step-by-step explanation:

The function is given by

y = 2x - 1 - \sqrt {3x}

Differentiate with respect to x, we get

\frac{dy}{dx} = 2 - 0 - \frac{2\sqrt3}{\sqrt x}\\\\\frac{dy}{dx} = 2 -  \frac{2\sqrt3}{\sqrt x}\\

7 0
3 years ago
Can u pls help me with this question asap ​
RideAnS [48]

Answer:

90

Step-by-step explanation:

Basically 90 precent of 100 is 90

7 0
3 years ago
I don't know this please help no links Brainliest
Illusion [34]

Answer:

y=x+1

Step-by-step explanation:

Rise over run. The line starts positive one and goes up one and over one.

Hope this helps!

4 0
3 years ago
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