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2 years ago

Find the value of the nearest tenth X=

Mathematics

1 answer:

Alex777 [14]2 years ago

8 0

Answer:

12,7

Step-by-step explanation:

use pathogaras theorem

c^2=a^2+b^2

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Simplify the exponential expression 48 ^ 1/2

tester [92]

Answer: the third option

Step-by-step explanation

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2 years ago

What is 3/5 of 40? If you can, please include examples... Tysm

Snowcat [4.5K]

Answer:

Step-by-step explanation:

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1 year ago

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A six-sided die is rolled.

insens350 [35]

Answer:

a.) 1/3

Step-by-step explanation:

1/6 is a 2 is rolled

1/6 if a 4 is rolled

so 2/6 if either are rolled

which simplifies to 1/3

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2 years ago

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Many track runners believe that they have a better chance of winning if they start in the inside lane that is closest to the fie

3241004551 [841]

Answer:

d) 6.750

The chi - square value = 6.750

Step-by-step explanation:

Given data

Starting Position 1 2 3 4 5 6

Number of Wins (O) 33 44 32 36 45 50

Step(i) :-

mean = $\frac{33+44+32+36+45+50}{6} = \frac{240}{6} =40$

Expected frequency = 40

Number of Wins (O) : 33 44 32 36 45 50

Expected frequency(E) : 40 40 40 40 40 40

(O - E ) : -7 4 -8 -4 5 10

(O-E)² : 49 16 64 16 25 100

$\frac{(O-E)^2}{E}$ : 1.225 0.4 1.6 0.4 0.625 2.5

Step(ii):-

The χ² test

χ² = ∑ $\frac{(O-E)^2}{E}$

χ² = 1.225 + 0.4 + 1.6 + 0.4 +0.625 +2.5 = 6.75

The chi - square value = 6.750

Final answer:-

The chi - square value = 6.750

6 0

2 years ago

Mark bought 8 boxes a week later half of all his boxes were destroyed in a fire there are now only 20 boxes left with how many d

anzhelika [568]

9514 1404 393

Answer:

equation: 1/2(s +8) = 20
Mark began with 32 boxes

Step-by-step explanation:

Let s represent the number Mark started with. After buying 8 more, he then had s+8. After the fire, he had ...

(1/2)(s +8) = 20

This equation can be solved by multiplying by 2, then subtracting 8.

s +8 = 40

s = 32

Mark began with 32 boxes.

8 0

2 years ago