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3 years ago

12

Can anyone help me? The directions are:

1 answer:

loris [4]3 years ago

8 0

$Genereal\ formula\ for\ circle:\\(x-a)^2+(y-b)2=r^2\\Center\ of\ circle:\ S(a,b)\\r-radius\\\\x^2+y^2=4^2\\It's\ equation\ of\ circle,\ which\ has\ S(0,0)\ and\ radius\ 4.$

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What the smallest to largest 3/8 0.37 7/10 0.073

Maurinko [17]

3/8 0.37><span>7/10 0.073 hope I helped</span>

5 0

4 years ago

The sides of an oblong are in the ratio of 4:3. The oblong has a length of 12 cm and is increased by a scale factor of 2.5. What

Aleksandr [31]

Answer:

If the scale factor is increased in 2.5, the increased width will be:

<u>22.5 cm</u>

Step-by-step explanation:

Remember that an oblong is longer than it is wide, by this reason, the ratio of 4:3 could mean, if we give a number, by each 4 cm in the length, there is 3 cm in the width, in this form, if the oblong has a length of 12 cm, the width is:

4 cm ⇒ 3 cm
12 cm ⇒ x

So:

$x=\frac{12 *3}{4}$
$x=\frac{36}{4}$
$x=9$

Then, the original width is 9 cm, as the scale factor must be increased 2.5, we can multiply the found width to obtain the increased width:

Increased width = 9 cm * 2.5
<u>Increased width = 22.5 cm</u>

As you can see, <u><em>the increased widt will be 22.5 cm</em></u>.

4 0

3 years ago

How to show the tens fact you used. write the difference. <br> 14-6=____<br> 10-___=____

trasher [3.6K]

14 - 6 = 8
10 - 6 = 4

5 0

4 years ago

A sales person at a car dealership earns a monthly salary of $2400 and $250 for each vehicle sold

Mrrafil [7]

Step-by-step explanation:

8 vehicle.

Step-by-step explanation:

Given: Monthly salary of salesperson is $2400

Incentive of salesperson is $250 per vehicle sold.

First, lets compute income to earned apart from salary.

∴ Deduct salary from the target amount

\$ 4400-\$ 2400= \$ 2000$4400−$2400=$2000

∴ 2000 need to be earned only through incentive, which is2000needtobeearnedonlythroughincentive,whichis250 per vehicle sold.

Now, solving to get number vehicles to be sold to earn $2000 as incentive.

Number of vehicle= \frac{2000}{250}= 8\ vehicles2502000=8 vehicles

∴ 8 vehicles need to be sold by salesperson to get total earning as $4400

8 0

3 years ago

What is the equation when y=5x+4 is reflected over the x-axis, y-axis & y=x?

tigry1 [53]

Answer:

A) $y=-5x-4$

B) $y=-5x+4$

C) $y=\frac{x-4}{5}$

Step-by-step explanation:

So we have the equation:

$y=5x+4$

Let's write this in function notation. Thus:

$y=f(x)=5x+4$

A)

To flip a function over the x-axis, multiply the function by -1. Thus:

$f(x)=5x+4\\-(f(x))=-(5x+4)$

Simplify:

$-f(x)=-5x-4$

B) To flip a function over the y-axis, change the variable x to -x. Thus:

$f(x)=5x+4\\f(-x)=5(-x)+4$

Simplify:

$f(-x)=-5x+4$

C) A reflection over the line y=x is synonymous with finding the inverse of the function.

To find the inverse, switch x and f(x) and solve for f(x):

$f(x)=5x+4$

Switch:

$x=5f^{-1}(x)+4$

Subtract 4 from both sides:

$x-4=5f^{-1}(x)$

Divide both sides by 5:

$f^{-1}(x)=\frac{x-4}{5}$

And we're done :)

7 0

3 years ago