What is the approximate area of the circle shown below

(-1/8c+16)-(3/8+3c) difference

zloy xaker [14]

Answer:

-25 (c-5) / 8

Negative 25 (c-5) over 8

5 0

3 years ago

Read 2 more answers

OMG PLS HELP WITH THIS IM PANICKING OMG I GOT A F IN MATH MY MOM JUST YELLED AT ME IM CRYING PLS HELP WITH THS- PLSS TELL ME WHA

Savatey [412]

Answer:

Ok, here we can see that Mr. Jones has $3,553 in his account, and he actually needs $18,469 to buy the car.

One way of representing this is:

Get a ruler, and draw a line that measures 3.553 cm (or close to it, it shouldn't be exact)

Now draw a line that measures 18.469 cm (again, this shouldn't be exact)

The difference between these lines represents the amount of money that Mr. Jones needs to save.

Now, how we find exactly the quantity?

Let's take the total cost of the car:

$18,469

Now let's subtract the amount of money that Mr. Jones already has:

$18,469 - $3,553 = $14,916

This is the amount of money that Mr. Jones needs to save if he wants to buy the car.

3 0

3 years ago

Ifx=-3 is the only x-intercept of the graph of a quadratic equation, which statement best describes the discriminant of the

Kazeer [188]

Answer:

D = 0

Step-by-step explanation:

Given

x-intercept = -3

Required

What does the discriminant represent?

The discriminant of a quadratic function can take any 3 values; these are as follows;

When D > 0
When D < 0
When D = 0

Which translates to

signifies that two different real roots exist
signifies that only complex roots exist
signifies that the two identical real roots exist

The question says that x-intercept = -3 is the only value;

This means that: x = -3 or x = -3

Analyzing the roots

3 and -3 are identical
-3 and -3 are real

This means they satisfy condition number 3;

Hence, D = 0

3 0

4 years ago

For what values of a are the following statements true: |a+5|=a+5

sdas [7]

Answer:

a≥0

Step-by-step explanation:

The equation on the left is absolute value so all values plugged in will be positive but on the other side if a negative was plugged in it would still be negative and thus result in a lower sum than the other side. For example:

|-2+5|=-2+5

7=3

this is untrue.

the equation would only be true if the a values were positive.

5 0

3 years ago

Select the correct answer. Which matrix represents this system of equations? -2y + 7z = 10 9x + 5y = 1 2x + z = -5

Stells [14]

Answer:

In matrix form this can be represented as

$\left[\begin{array}{ccc}0&-2&7\\0&5&0\\2&0&1\end{array}\right]$ $\left[\begin{array}{ccc}x\\y\\z\end{array}\right]$ = $\left[\begin{array}{ccc}10\\1\\5\end{array}\right]$

Step-by-step explanation:

The given equations are

-2y + 7z = 10

9x + 5y = 1

2x + z = -5

Which can be written as

0x+-2y + 7z = 10

9x + 5y+0z = 1

2x +0y+ z = -5

In matrix form this can be represented as

$\left[\begin{array}{ccc}0&-2&7\\0&5&0\\2&0&1\end{array}\right]$ $\left[\begin{array}{ccc}x\\y\\z\end{array}\right]$ = $\left[\begin{array}{ccc}10\\1\\5\end{array}\right]$

When we multiply the above matrices we get the given set of equations.

In multiplying the matrices we check the no of columns of the first matrix and the number of rows of the second matrix. If they are equal ( as in this case they are 3) then the matrices can be multiplied .

The answer has the number of rows equal to the number of rows of the first matrix and the number of columns equal to the number of columns of the second matrix which is true in this case.

4 0

3 years ago