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3 years ago

I’m stuck need help ASAP

Mathematics

1 answer:

Mamont248 [21]3 years ago

7 0

An inequality for this speed sign would need to be one where x is less than or equal to 25mph. We don't have to go exactly 25mph, but it's okay if we do go exactly 25mph. We can also go less than 25mph without getting a ticket.

An inequality equation would look like this:
x < 25
***should be less than or equal sign but I don't have one on my keyboard

Hope this helped!! :)

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Jack has two more than half as many cups as

Rufina [12.5K]

Step-by-step explanation:

$(x \div 2 + 2) + \frac{(x \div 2 + 2)}{2} + x$

its hard to determine without the known value of x, but the above would be the equation needed to solve it if you knew what x was

4 0

3 years ago

Explain how to use division to find an equivalent fraction for 9/12

Novosadov [1.4K]

Answer:

3/4

Step-by-step explanation:

You can simplify it by looking for what divides into both numbers. The lowest possible number is 3 because it can go into both 9 and 12.

9/3=3

12/3=4

3/4

6 0

3 years ago

Read 2 more answers

Wind farm configuration is a significant issue as the upwind turbines generate maximal energy while creating wakes for downwind

lord [1]

Answer:

a) [24.114,29.2858]

b) Since 30 is not in the 95% confidence interval, there is a 95% probability that 30 is not the true mean WEP

Step-by-step explanation:

The 95% confidence interval is given by the interval

$\bf [ \bar x-z^*\frac{s}{\sqrt n}, \bar x+t^*\frac{s}{\sqrt n}]$

where

$\bf \bar x$ = 26.7 is the sample mean

s = 17.7 is the sample standard deviation

n = 180 is the sample size

Since the sample size is big enough, we can use the Normal N(0,1) to compute $\bf z^*$ and it would be 1.96(*) (a value such that the area under the Normal curve outside the interval [-z, z] is 5% (0.05))

and our 95% confidence interval is

$\bf [26.7-1.96*\frac{17.7}{\sqrt{180}}, 26.7+1.96*\frac{17.7}{\sqrt{180}}]=\boxed{[24.114,29.2858]}$

(*)

This value can be computed in Excel with

NORMINV(1-0.025,0,1)

and in OpenOffice Calc with

NORMINV(1-0.025;0;1)

Since 30 is not in the 95% confidence interval, there is a 95% probability that 30 is not the true mean WEP

7 0

3 years ago

Work out the size of angle x.

Citrus2011 [14]

Answer:

180°-100°= 80°

x=80°

hope this is enough

6 0

3 years ago

Solve 15 = 0.5 n check the souution

denis23 [38]

N = 30.

0.5(30) = 15

8 0

3 years ago