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3 years ago

PLEASE HELP ME WITH THIS

Mathematics

1 answer:

Alika [10]3 years ago

8 0

Answer:

2 $\frac{1}{5}$

Step-by-step explanation:

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Find the missing length indicated. х 12 9 X = units

madam [21]

Answer:

Step-by-step explanation:

9/12=12/x

x=16

8 0

2 years ago

Find the P-value for the hypothesis test with a standardized test statistic z. Decide whether toreject the null hypothesis for t

iren2701 [21]

Answer:

1.) We don't reject the null

2.) We reject the Null

3.) We do not reject the null

Step-by-step explanation:

Obtaining p values using test statistic:

Given that ; we have a standardized test statistic and α - values ;

Let's define the decision region :

If Pvalue < α ; Reject H0 ; otherwise, fail to reject H0

A.)

Left tail , Z = - 1.32 ; α = 0.10

We can use the Pvalue calculator from Z score :

Pvalue = 0.934

Pvalue > α ; Hence, we fail to reject the null, H0

B.)

Right-tailed test, z = 2.46, α = 0.01

Pvalue from Zscore calculator ;

Pvalue = 0.0069

Pvalue < α ; Hence, we reject the null, H0

C.)

Two-tailed test, z = -1.68, α = 0.05

Pvalue from Zscore calculator ;

Pvalue = 0.093

Pvalue > α ; Hence, we fail to reject the null, H0

6 0

3 years ago

Use the following function to find f(9) f(x) = 6x f(9)=

san4es73 [151]

Answer:

f(9)=54

Step-by-step explanation:

Subsitute 9 for x in f(x)=6x

$f(9)=6(9)=54$

6 0

3 years ago

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The value of a $3000 computer decreases about 30% each year. write a function for the computers value V(t)

den301095 [7]

Answer:

Function for given situation is : $V(t)=3000(0.70)^t$

Value of computer after 4 years = $720.3.

Step-by-step explanation:

Given that the value of a $3000 computer decreases about 30% each year. Now we need to write a function for the computers value V(t). then we need to find about how much will the computer be worth in 4 years.

It clearly says that value decreases so that means function represents decay.

For decay we use formula:

$A=P(1-r)^t$

where P=initial value = $3000,

r= rate of decrease =30% = 0.30

t= number of years

A=V(t) = future value

so the required function is $V(t)=3000(1-0.30)^t$

or $V(t)=3000(0.70)^t$

Now plug t=4 years to get the value of computer after 4 years.

$V(4)=3000(0.70)^4$

$V(4)=720.3$

Hence final answer is $720.3.

7 0

3 years ago

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To get from the post office to the library, Sindy walked due north and then due east. The distance Sindy walked east is 20 meter

Sidana [21]

Technically, none of the equations.

The equation you're looking for would be:

x²+(x+20)²=150²

7 0

3 years ago

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