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gulaghasi [49]
3 years ago
15

ILL GIVE BRAINLIEST ​

Mathematics
1 answer:
Travka [436]3 years ago
6 0
The answer is z=20 because 25-6 is 19 and rounded that is 20
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K/9=3/9=what ? so is( k)a 3 or another number which is k=3/9=3/9 or no?
Flura [38]
So, if k/9=3/9, then k=3, because it is a variable substituting 3. :D Hope I could help! 
3 0
3 years ago
Does (3/2)^2 equal 2
Viktor [21]

Answer:

no

Step-by-step explanation:

3/2*3/2= 9/4

9/4= 2 1/4

3 0
3 years ago
In a 3M Privacy Filters poll, 806 adults were asked to identify their favorite seat when they fly, and 492 of them chose a windo
Snowcat [4.5K]

Answer:

Step-by-step explanation:

If majority of adults prefer a window seat when they fly, it means that more than half or more than 0.5 of the population prefer a window seat when they fly.

We would set up the hypothesis test.

For the null hypothesis,

p = 0.45

For the alternative hypothesis,

p > 0.5

Considering the population proportion, probability of success, p = 0.5

q = probability of failure = 1 - p

q = 1 - 0.5 = 0.5

Considering the sample,

Sample proportion, P = x/n

Where

x = number of success = 492

n = number of samples = 806

P = 492/806 = 0.61

We would determine the test statistic which is the z score

z = (P - p)/√pq/n

z = (0.61 - 0.5)/√(0.5 × 0.5)/806 = 6.24

From the normal distribution table, the p value < 0.00001

Since alpha, 0.01 < than the p value, then we would reject the null hypothesis. Therefore, at a 1% significance level, we can conclude that the majority of adults prefer a window seat when they fly.

8 0
3 years ago
64 ft of rope weighs 20 pounds 28 ft of rope weighs x pounds​
castortr0y [4]

Answer

89.6

Step-by-step explanation:

Each foot of rope weighs 3.2 so then mutiplied 3.2 by 28 and got that

4 0
3 years ago
ABC is an isoscles triangle. Angle A = 40°.
umka21 [38]

Answer:

70 degrees

Step-by-step explanation:

total angle in a triangle is 180 degrees

180-40= 140

Angle b and c is total of 140 degrees

they are isosceles so their measurements would be same.

angle b and c is 140÷ 2 = 70

so angle b is 70 degrees

8 0
3 years ago
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