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3 years ago

3x +-11 >-20 Which is greater than or less than

Mathematics

1 answer:

SpyIntel [72]3 years ago

4 0

Hey babe I’m going to be at home;)

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A) average of p and 10 is 16,p=?<br>b) average of z and 12 is 10,z=?

Ahat [919]

Answer:

p = 22

z = 8

Step-by-step explanation:

Average is sum of the terms divided by number of terms.

<u>Question # 1:</u>

Given that:

$\displaystyle \frac{p+10}{2} = 16\\\\Multiply\ both\ sides\ by \ 2]]\\ p+10 = 2 \times 16\\\\p+10 = 32\\\\Subtract \ 10\ to \ both \ sides\\\\p = 32-10\\\\p = 22$

<u>Question # 2:</u>

Given that:

$\displaystyle \frac{z+12}{2} = 10\\\\Multiply \ both \ sides \ by \ 2\\\\z+12 = 10 \times 2\\\\z+12 = 20\\\\Subtract \ 12\ to \ both \ sides\\\\z = 20-12\\\\z = 8\\\\\rule[224]{225}{2}$

Hope this helped!

5 0

3 years ago

Which equation is modeled on the number line below?

Korolek [52]

I'm not really sure, jees

8 0

3 years ago

Now that the curve pieces are determined, use those pieces as sections of a complete coaster. By hand or by using a drawing prog

VMariaS [17]

Answer:

Could you post the rest of it pllease

Step-by-step explanation:

8 0

3 years ago

The postal service sorts mail as Priority Mail Express, Priority Mail, First-Class Mail, or Standard Mail. Over a period of 3 we

Dafna11 [192]

Answer:

Here, F = 2.911

F > 2.739502 , so reject null hypothesis ( H0)

There is ample evidence to indicate a disparity in the means for the different forms of mails.

Step-by-step explanation:

Null hypothesis - H₀: μ₁ = μ₂ = μ₃ = μ₄

Alternative hypothesis - H₁: At least one mean is different.

df1 is factor degree of freedom and df2 is error degree of freedom.

Decision rule - Reject H₀ if F > F₀.₀₅, (df1, df2)

F0.05, df1,df2 is f critical value at \alpha = 0.05

Here df1 = 3 , and df2 = 68

Using Excel,

F₀.₀₅, ₃, ₆₈ = FINV( 0.05, 3 , 68 ) = 2.739502302

So reject H0 if F > 2.739502

Here, F = 2.911

F > 2.739502 , so reject null hypothesis ( H0)

There is ample evidence to indicate a disparity in the means for the different forms of mails.

7 0

3 years ago

Which equation is the inverse of y=100-x2

Harman [31]

Answer:

Inverse of y = $f^{-1}(x)$ = $\sqrt{100 -x}$ .

Step-by-step explanation:

Given : f(x) = y = 100 - x²

To find : Find inverse.

Solution : We have given that :

f(x) = y = 100 - x²

Step1) : Replace every x with a y and replace every y with an x .

x = 100 - y².

Step 2): Solve for y

On subtracting 100 from both sides

x - 100 = -y²

On multiplying both side by -1

100 -x = y²

Taking square root both sides and switching sides

y = ± $\sqrt{100-x}$ .

Step3 ) : Replace y with $f^{-1}(x)$ .

$f^{-1}(x)$ = ± $\sqrt{100-x}$ .

Therefore, inverse of y = $f^{-1}(x)$ = ± $\sqrt{100-x}$ .

3 0

4 years ago