What is the science behind global warming in labs

Goryan [66]

Answer:

$\frac{N}{8}$

Dividing is the same as putting numbers into a fraction. This is N/8. We don't get the answer until we figure out what N is equal to.

7 0

4 years ago

2 2/5 is equivalent to

lianna [129]

It is equivalent to 4/10

8 0

4 years ago

PLEASEEE HELP ME WITH THISSS

zaharov [31]

Answer:

x=14

Step-by-step explanation:

This is asking for the ratio of A to B.

The x-10 is 1.

The 28 is 7.

Find the scale factor by executing 28/7=4.

So, you would want polygon A to be 4 in order to be proportional to polygon B.

Now, you can just guess and check that 14-10=4

Or, you can set up the equation as follows: x-10 = 4

+10 +10

x = 14 is your answer.

4 0

3 years ago

An angle measures 126° more than the measure of its supplementary angle. What is the measure of each angle?

Crazy boy [7]

Solution:

We know that:

A pair of supplementary angles always sum up to 180°

This means that:

$x + x + 126 = 180$

Step-by step calculations:

Combine like terms and simplify:

$x + x + 126 = 180$
=> $(x + x) + 126 = 180$
=> $2x + 126 = 180$

Subtract 126 both sides:

=> $2x + 126 - 126 = 180 - 126$
=> $2x = 54$

Divide 2 both sides:

=> $\frac{2x}{2} = \frac{54}{2}$
=> $x = 27$

This means that one angle is 27°. Let's find the other angle.

Finding the other angle:

$27 + 126 = Other \space\ angle$
=> $153 \space\ = Other \space\ angle$

Thus, the measure of the angles are 27° and 153°.

7 0

2 years ago

Read 2 more answers

In a random sample of 10 residents of the state of Washington, the mean waste recycled per person per day was 2.3 pounds with a

djverab [1.8K]

Answer:

90% confidence interval for the mean waste recycled per person per day for the population of Washington is [2.074 , 2.526].

Step-by-step explanation:

We are given that a a random sample of 10 residents of the state of Washington, the mean waste recycled per person per day was 2.3 pounds with a standard deviation of 0.39 pounds.

Firstly, the pivotal quantity for 90% confidence interval for the mean waste recycled per person per day for the population of Washington is given by;

P.Q. = $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ ~ $t_n_-_1$

where, $\bar X$ = sample mean waste recycled per person per day = 2.3 pounds

s = sample standard deviation = 0.39 pounds

n = sample of residents = 10

$\mu$ = population mean waste recycled per person per day

Here for constructing 90% confidence interval we have used t statistics because we don't know about population standard deviation.

So, 90% confidence interval for the population mean, $\mu$ is ;

P(-1.833 < $t_9$ < 1.833) = 0.90 {As the critical value of t at 9 degree of

freedom are -1.833 & 1.833 with P = 5%}

P(-1.833 < $\frac{\bar X - \mu}{\frac{s}{\sqrt{n} } }$ < 1.833) = 0.90

P( $-1.833 \times {\frac{s}{\sqrt{n} } }$ < ${\bar X - \mu}$ < $1.833 \times {\frac{s}{\sqrt{n} } }$ ) = 0.90

P( $\bar X-1.833 \times {\frac{s}{\sqrt{n} } }$ < $\mu$ < $\bar X+1.833 \times {\frac{s}{\sqrt{n} } }$ ) = 0.90

90% confidence interval for $\mu$ = [ $\bar X-1.833 \times {\frac{s}{\sqrt{n} } }$ , $\bar X+1.833 \times {\frac{s}{\sqrt{n} } }$ ]

= [ $2.3-1.833 \times {\frac{0.39}{\sqrt{10} } }$ , $2.3-1.833 \times {\frac{0.39}{\sqrt{10} } }$ ]

= [2.074 , 2.526]

Therefore, 90% confidence interval for the mean waste recycled per person per day for the population of Washington is [2.074 , 2.526].

8 0

3 years ago