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4 years ago

Solve for a. 2a - 8 = - 36

Mathematics

2 answers:

Tomtit [17]4 years ago

6 0

Answer:

a=-16

Step-by-step explanation:

inn [45]4 years ago

5 0

Answer:

$- 14$

Step-by-step explanation:

$2a = - 36 + 8$

When the - 8 is moved after the equals.. It changes sign

$2a = - 28$

$a = \frac{ - 28}{2}$

$a = - 14$

<h3>Double check</h3>

$2( - 14) - 8 = - 36$

You can try this in calculator also

Hope this is correct and helpful

HAVE A GOOD DAY!

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Maksim231197 [3]

Answer:

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Step-by-step explanation:

Please find the complete question in the attached file.

Throughout the above output the regression equation is:

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3 years ago

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SSSSS [86.1K]

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4 years ago

What is the inverse of this function?

kolbaska11 [484]

Answer:

$f^{-1}(x)=4x^2-3$

Step-by-step explanation:

The Inverse of a Function

Given a function f(x), the inverse of f, called $f^{-1}(x)$ is a function that satisfies:

$f(f^{-1}(x))=x$

The domain of f becomes the range of its inverse and vice-versa.

The procedure to find the inverse of the function is:

* Write the function as a two-variable equation:

* Solve the equation for x.

* Swap the variables

We are given the function:

$\displaystyle f(x)=-\frac{1}{2}\sqrt{x+3}$

Defined in the interval x ≥ -3

Note f is always negative, thus its range is f(x) ≤ 0

Now we find the inverse. Call y=f(x):

$\displaystyle y=-\frac{1}{2}\sqrt{x+3}$

Multiplying by 2:

$\displaystyle 2y=-\sqrt{x+3}$

Squaring both sides:

$\displaystyle 4y^2=x+3$

Subtracting 3:

$\displaystyle 4y^2-3=x$

Swapping variables:

$y=4x^2-3$

Thus:

$\mathbf{f^{-1}(x)=4x^2-3}$

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3 years ago

What is an equivalent way to write the expression without grouping symbols? 7(4−x) Drag and drop the values into the boxes to cr

wlad13 [49]

Answer:

28-7x

Step-by-step explanation:

To write the expression without grouping symbols, multiply the 7 into both terms using the distributive property.

7*4 - 7^x

28-7x

8 0

4 years ago

bills normal temperature is 98.6 today ballistic and has a temperature of 104.3 how many degrees above his normal temperature is

kkurt [141]

Answer:

Today's temperature is 5.7 degrees above Bill's normal temperature.

Step-by-step explanation:

Given

Represent the normal temperature with N and today's temperature with T.

Such that:

$N = 98.6$

$T = 104.3$

Required

Determine the temperature above the normal temperature

The interpretation of this is to calculate the difference between Bill's normal temperature and Bill's today temperature.

Represent the difference with D

D is calculated as follows:

$D = T - N$

Substitute values for T and N

$D = 104.3 - 98.6$

$D = 5.7$

Hence, today's temperature is 5.7 degrees above Bill's normal temperature.

4 0

3 years ago