All categories

3 years ago

Pweaseee help!!!!!!!!!!!!!!!

Mathematics

1 answer:

liraira [26]3 years ago

8 0

To simplify this expression would be 4x-3

You might be interested in

Use the standard norml distribution or the t-distribution to construct a 99% confidence interval for the population mean. Justif

dalvyx [7]

Answer:

E) we will use t- distribution because is un-known,n<30

the confidence interval is (0.0338,0.0392)

Step-by-step explanation:

Step:-1

Given sample size is n = 23<30 mortgage institutions

The mean interest rate 'x' = 0.0365

The standard deviation 'S' = 0.0046

the degree of freedom = n-1 = 23-1=22

99% of confidence intervals $t_{0.01} =2.82$ (from tabulated value).

$The mean value = 0.0365$

$x±t_{0.01} \frac{S}{\sqrt{n-1} }$

$0.0365±2.82 \frac{0.0046}{\sqrt{23-1} }$

$0.0365±2.82 \frac{0.0046}{\sqrt{22} }$

$0.0365±2.82 \frac{0.0046}{4.690 }$

using calculator

$0.0365±0.00276$

Confidence interval is

$(0.0365-0.00276,0.0365+0.00276)$

$(0.0338,0.0392)$

the mean value is lies between in this confidence interval

(0.0338,0.0392).

Answer:-

using t- distribution because is unknown,n<30,and the interest rates are not normally distributed.

4 0

3 years ago

Find all the powers of 3 that are in the range 3 through 1000

Ksivusya [100]

So just use a calculator but here goes
3^1=3
3^2=9
3^3=27
3^4=81
3^5=243
3^6=729

and 3^7 is 2187 which is excluded

8 0

3 years ago

The base of a rectangular prism has an area of 888 square meters. The height of the rectangular prism is 555 meters.

andriy [413]

If you want to find the volume, multiply the area of the base by the height. In this problem it would be 888*555, which is equal to 492,840

7 0

3 years ago

Im a lil stuck on this :v

12345 [234]

Answer:

C-----> x<-7

Step-by-step explanation:

first u do this to turn x in positive and consequently change the > to an <:

(-1).(-4x)>28.(-1)

so:

4x<-28

x<-7

# when multiplying each side by (-1), you have to change the symbol (>) to an (<), or (<) to an (>)

6 0

3 years ago

-5 x + y = - 21 and y = x - 1 solve the system of equation

Kitty [74]

Answer:

Step-by-step explanation:

-5x + (x -1) = -21

-4x = -20

x = 5

3 0

3 years ago

Pweaseee help!!!!!!!!!!!!!!!​

Pweaseee help!!!!!!!!!!!!!!!